Meteorologia spaziale

Velocità del vento solare Vento solare dei campi magnetici Apice radioflusso a 10.7 cm
Bt Bz

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EXTENDED WARNING
Geomagnetic K-index of 4 expected
Issued: 23.06.2024 20:56 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4635
Valid From: 2024 Jun 23 1030 UTC
Now Valid Until: 2024 Jun 24 0600 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
X-ray Event exceeded M5
Issued: 23.06.2024 13:26 UTC
X-ray Event exceeded M5
Begin Time: 2024 Jun 23 1251 UTC
Maximum Time: 2024 Jun 23 1301 UTC
End Time: 2024 Jun 23 1311 UTC
X-ray Class: M9.3
Location: S18E70
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
X-Ray Flux exceeded M5
Issued: 23.06.2024 13:02 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 23 1257 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

WARNING
Geomagnetic K-index of 4 expected
Emesso: 23.06.2024 10:28 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 23 1030 UTC
Valid To: 2024 Jun 23 2100 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

ALERT
Type II Radio Emission
Emesso: 22.06.2024 00:04 UTC
Type II Radio Emission
Begin Time: 2024 Jun 21 2340 UTC
Estimated Velocity: 590 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

SUMMARY
X-ray Event exceeded M5
Emesso: 20.06.2024 23:42 UTC
X-ray Event exceeded M5
Begin Time: 2024 Jun 20 2300 UTC
Maximum Time: 2024 Jun 20 2316 UTC
End Time: 2024 Jun 20 2320 UTC
X-ray Class: M5.7
Location: S16E41
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
X-Ray Flux exceeded M5
Emesso: 20.06.2024 23:20 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 20 2316 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

WARNING
Geomagnetic K-index of 4 expected
Emesso: 18.06.2024 04:57 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 18 0500 UTC
Valid To: 2024 Jun 18 1500 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 4 expected
Emesso: 17.06.2024 16:59 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 17 1700 UTC
Valid To: 2024 Jun 17 2200 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
10cm Radio Burst
Emesso: 17.06.2024 11:50 UTC
10cm Radio Burst
Begin Time: 2024 Jun 17 1044 UTC
Maximum Time: 2024 Jun 17 1044 UTC
End Time: 2024 Jun 17 1044 UTC
Duration: 1 minutes
Peak Flux: 290 sfu
Latest Penticton Noon Flux: 167 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

ALERT
Type II Radio Emission
Emesso: 17.06.2024 11:33 UTC
Type II Radio Emission
Begin Time: 2024 Jun 17 1100 UTC
Estimated Velocity: 411 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Emesso: 16.06.2024 20:55 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4631
Valid From: 2024 Jun 16 1200 UTC
Now Valid Until: 2024 Jun 17 0300 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

ALERT
Geomagnetic K-index of 4
Emesso: 16.06.2024 19:26 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 Jun 16 1926 UTC
Synoptic Period: 1800-2100 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 4 expected
Emesso: 16.06.2024 12:00 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 16 1200 UTC
Valid To: 2024 Jun 16 2100 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Emesso: 15.06.2024 20:52 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4629
Valid From: 2024 Jun 15 1200 UTC
Now Valid Until: 2024 Jun 16 0900 UTC
Warning Condition: persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-Index of 6 expected
Emesso: 15.06.2024 14:10 UTC
Geomagnetic K-Index of 6 expected
Valid From: 2024 Jun 15 1409 UTC
Valid To: 2024 Jun 15 2100 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

ALERT
Geomagnetic K-index of 5
Emesso: 15.06.2024 13:30 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 15 1329 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic K-index of 5 expected
Emesso: 15.06.2024 13:23 UTC
Geomagnetic K-index of 5 expected
Valid From: 2024 Jun 15 1323 UTC
Valid To: 2024 Jun 15 2100 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 4
Emesso: 15.06.2024 13:10 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 Jun 15 1310 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
Geomagnetic Sudden Impulse
Emesso: 15.06.2024 12:16 UTC
Geomagnetic Sudden Impulse
Observed: 2024 Jun 15 1157 UTC
Deviation: 27 nT
Station: HAD

WARNING
Geomagnetic K-index of 4 expected
Emesso: 15.06.2024 11:48 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 15 1200 UTC
Valid To: 2024 Jun 15 2100 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic Sudden Impulse expected
Emesso: 15.06.2024 11:11 UTC
Geomagnetic Sudden Impulse expected
Valid From: 2024 Jun 15 1145 UTC
Valid To: 2024 Jun 15 1215 UTC
IP Shock Passage Observed: 2024 Jun 15 1103 UTC

EXTENDED WARNING
Proton 10MeV Integral Flux above 10pfu expected
Emesso: 12.06.2024 23:56 UTC
Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 567
Valid From: 2024 Jun 12 0310 UTC
Now Valid Until: 2024 Jun 13 1500 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor

Comment: 10 MeV proton flux is fluctuating close to the 10 pfu (S1/Minor) threshold.

Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.

EXTENDED WARNING
Proton 10MeV Integral Flux above 10pfu expected
Emesso: 12.06.2024 14:10 UTC
Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 566
Valid From: 2024 Jun 12 0310 UTC
Now Valid Until: 2024 Jun 12 2359 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor

Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.

WARNING
Proton 10MeV Integral Flux above 10pfu expected
Emesso: 12.06.2024 03:08 UTC
Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2024 Jun 12 0310 UTC
Valid To: 2024 Jun 12 1500 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor

Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.

ALERT
Type II Radio Emission
Emesso: 11.06.2024 23:11 UTC
Type II Radio Emission
Begin Time: 2024 Jun 11 2251 UTC
Estimated Velocity: 528 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT
Type IV Radio Emission
Emesso: 11.06.2024 23:10 UTC
Type IV Radio Emission
Begin Time: 2024 Jun 11 1638 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Emesso: 11.06.2024 02:39 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4627
Valid From: 2024 Jun 10 1705 UTC
Now Valid Until: 2024 Jun 11 1500 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Emesso: 10.06.2024 21:55 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4626
Valid From: 2024 Jun 10 1705 UTC
Now Valid Until: 2024 Jun 11 0300 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
X-ray Event exceeded M5
Emesso: 10.06.2024 19:38 UTC
X-ray Event exceeded M5
Begin Time: 2024 Jun 10 1811 UTC
Maximum Time: 2024 Jun 10 1840 UTC
End Time: 2024 Jun 10 1918 UTC
X-ray Class: M9.5
Location: S19W89
NOAA Scale: R2 - Moderate

Comment: Region 3697

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
Type II Radio Emission
Emesso: 10.06.2024 19:34 UTC
Type II Radio Emission
Begin Time: 2024 Jun 10 1829 UTC
Estimated Velocity: 754 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT
X-Ray Flux exceeded M5
Emesso: 10.06.2024 18:34 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 10 1828 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

ALERT
Geomagnetic K-index of 4
Emesso: 10.06.2024 17:46 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 Jun 10 1746 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
Geomagnetic Sudden Impulse
Emesso: 10.06.2024 17:45 UTC
Geomagnetic Sudden Impulse
Observed: 2024 Jun 10 1725 UTC
Deviation: 52 nT
Station: NGK

WARNING
Geomagnetic K-index of 4 expected
Emesso: 10.06.2024 16:53 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 10 1705 UTC
Valid To: 2024 Jun 10 2200 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic Sudden Impulse expected
Emesso: 10.06.2024 16:51 UTC
Geomagnetic Sudden Impulse expected
Valid From: 2024 Jun 10 1705 UTC
Valid To: 2024 Jun 10 1805 UTC
IP Shock Passage Observed: 2024 Jun 10 1634 UTC

SUMMARY
X-ray Event exceeded X1
Emesso: 10.06.2024 11:34 UTC
X-ray Event exceeded X1
Begin Time: 2024 Jun 10 1018 UTC
Maximum Time: 2024 Jun 10 1108 UTC
End Time: 2024 Jun 10 1118 UTC
X-ray Class: X1.5
Optical Class: sf
Location: S19W90
NOAA Scale: R3 - Strong

Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

ALERT
X-Ray Flux exceeded M5
Emesso: 10.06.2024 10:57 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 10 1053 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

SUMMARY
Proton Event 10MeV Integral Flux exceeded 10pfu
Emesso: 10.06.2024 05:35 UTC
Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2024 Jun 08 0255 UTC
Maximum Time: 2024 Jun 08 0800 UTC
End Time: 2024 Jun 09 2140 UTC
Maximum 10MeV Flux: 1030 pfu
NOAA Scale: S3 - Strong

EXTENDED WARNING
Proton 10MeV Integral Flux above 10pfu expected
Emesso: 09.06.2024 23:37 UTC
Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 564
Valid From: 2024 Jun 08 0242 UTC
Now Valid Until: 2024 Jun 10 1200 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor

Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.

SUMMARY
Proton Event 10MeV Integral Flux exceeded 100pfu
Emesso: 09.06.2024 01:22 UTC
Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2024 Jun 08 0455 UTC
Maximum Time: 2024 Jun 08 0800 UTC
End Time: 2024 Jun 08 2255 UTC
Maximum 10MeV Flux: 1030 pfu
NOAA Scale: S3 - Strong

SUMMARY
Proton Event 100MeV Integral Flux exceeded 1pfu
Emesso: 09.06.2024 01:22 UTC
Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2024 Jun 08 0225 UTC
Maximum Time: 2024 Jun 08 0625 UTC
End Time: 2024 Jun 08 1455 UTC
Maximum 100MeV Flux: 8 pfu

EXTENDED WARNING
Proton 10MeV Integral Flux above 10pfu expected
Emesso: 08.06.2024 23:55 UTC
Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 563
Valid From: 2024 Jun 08 0242 UTC
Now Valid Until: 2024 Jun 09 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor

Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.

SUMMARY
Proton Event 10MeV Integral Flux exceeded 1000pfu
Emesso: 08.06.2024 20:07 UTC
Proton Event 10MeV Integral Flux exceeded 1000pfu
Begin Time: 2024 Jun 08 0800 UTC
Maximum Time: 2024 Jun 08 0800 UTC
End Time: 2024 Jun 08 0805 UTC
Maximum 10MeV Flux: 1030 pfu
NOAA Scale: S3 - Strong

EXTENDED WARNING
Proton 100MeV Integral Flux above 1pfu expected
Emesso: 08.06.2024 17:58 UTC
Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 104
Valid From: 2024 Jun 08 0225 UTC
Now Valid Until: 2024 Jun 08 2359 UTC
Warning Condition: Persistence

Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.

EXTENDED WARNING
Proton 100MeV Integral Flux above 1pfu expected
Emesso: 08.06.2024 11:55 UTC
Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 103
Valid From: 2024 Jun 08 0225 UTC
Now Valid Until: 2024 Jun 08 1800 UTC
Warning Condition: Persistence

Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.

WATCH
Geomagnetic Storm Category G2 Predicted
Emesso: 08.06.2024 10:25 UTC
Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Jun 09: None (Below G1) Jun 10: G2 (Moderate) Jun 11: G1 (Minor)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

ALERT
Proton Event 10MeV Integral Flux exceeded 1000pfu
Emesso: 08.06.2024 08:13 UTC
Proton Event 10MeV Integral Flux exceeded 1000pfu
Begin Time: 2024 Jun 08 0800 UTC
NOAA Scale: S3 - Strong

Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels.
Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely.
Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation.

ALERT
Proton Event 10MeV Integral Flux exceeded 100pfu
Emesso: 08.06.2024 05:03 UTC
Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2024 Jun 08 0500 UTC
NOAA Scale: S2 - Moderate

Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.

ALERT
Proton Event 10MeV Integral Flux exceeded 10pfu
Emesso: 08.06.2024 03:03 UTC
Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2024 Jun 08 0255 UTC
NOAA Scale: S1 - Minor

Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.

WARNING
Proton 10MeV Integral Flux above 10pfu expected
Emesso: 08.06.2024 02:43 UTC
Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2024 Jun 08 0242 UTC
Valid To: 2024 Jun 08 2359 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor

Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.

SUMMARY
X-ray Event exceeded M5
Emesso: 08.06.2024 02:37 UTC
X-ray Event exceeded M5
Begin Time: 2024 Jun 08 0123 UTC
Maximum Time: 2024 Jun 08 0149 UTC
End Time: 2024 Jun 08 0219 UTC
X-ray Class: M9.6
Location: S18W69
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
Proton Event 100MeV Integral Flux exceeded 1pfu
Emesso: 08.06.2024 02:32 UTC
Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2024 Jun 08 0225 UTC

Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.

WARNING
Proton 100MeV Integral Flux above 1pfu expected
Emesso: 08.06.2024 02:22 UTC
Proton 100MeV Integral Flux above 1pfu expected
Valid From: 2024 Jun 08 0225 UTC
Valid To: 2024 Jun 08 1200 UTC
Warning Condition: Onset

Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.

ALERT
Type IV Radio Emission
Emesso: 08.06.2024 02:19 UTC
Type IV Radio Emission
Begin Time: 2024 Jun 08 0157 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Emesso: 08.06.2024 02:04 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4624
Valid From: 2024 Jun 07 1148 UTC
Now Valid Until: 2024 Jun 08 1500 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
10cm Radio Burst
Emesso: 08.06.2024 02:00 UTC
10cm Radio Burst
Begin Time: 2024 Jun 08 0126 UTC
Maximum Time: 2024 Jun 08 0130 UTC
End Time: 2024 Jun 08 0146 UTC
Duration: 20 minutes
Peak Flux: 370 sfu
Latest Penticton Noon Flux: 184 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

WARNING
Geomagnetic K-index of 5 expected
Emesso: 08.06.2024 01:59 UTC
Geomagnetic K-index of 5 expected
Valid From: 2024 Jun 08 0200 UTC
Valid To: 2024 Jun 08 1200 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Type II Radio Emission
Emesso: 08.06.2024 01:54 UTC
Type II Radio Emission
Begin Time: 2024 Jun 08 0128 UTC
Estimated Velocity: 894 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT
X-Ray Flux exceeded M5
Emesso: 08.06.2024 01:37 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 08 0135 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Emesso: 07.06.2024 23:54 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4623
Valid From: 2024 Jun 07 1148 UTC
Now Valid Until: 2024 Jun 08 0900 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

ALERT
Geomagnetic K-index of 6
Emesso: 07.06.2024 18:01 UTC
Geomagnetic K-index of 6
Threshold Reached: 2024 Jun 07 1759 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

EXTENDED WARNING
Geomagnetic K-index of 5 expected
Emesso: 07.06.2024 17:17 UTC
Geomagnetic K-index of 5 expected
Extension to Serial Number: 1887
Valid From: 2024 Jun 07 1342 UTC
Now Valid Until: 2024 Jun 07 2359 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

EXTENDED WARNING
Geomagnetic K-Index of 6 expected
Emesso: 07.06.2024 17:17 UTC
Geomagnetic K-Index of 6 expected
Extension to Serial Number: 527
Valid From: 2024 Jun 07 1502 UTC
Now Valid Until: 2024 Jun 07 2100 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

ALERT
Geomagnetic K-index of 5
Emesso: 07.06.2024 15:21 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 07 1517 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 6
Emesso: 07.06.2024 15:03 UTC
Geomagnetic K-index of 6
Threshold Reached: 2024 Jun 07 1456 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

WARNING
Geomagnetic K-Index of 6 expected
Emesso: 07.06.2024 15:02 UTC
Geomagnetic K-Index of 6 expected
Valid From: 2024 Jun 07 1502 UTC
Valid To: 2024 Jun 07 1800 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

ALERT
Geomagnetic K-index of 5
Emesso: 07.06.2024 14:24 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 07 1411 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic K-index of 5 expected
Emesso: 07.06.2024 13:42 UTC
Geomagnetic K-index of 5 expected
Valid From: 2024 Jun 07 1342 UTC
Valid To: 2024 Jun 07 1800 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 4
Emesso: 07.06.2024 13:41 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 Jun 07 1338 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 4 expected
Emesso: 07.06.2024 11:49 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 07 1148 UTC
Valid To: 2024 Jun 07 2359 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
X-ray Event exceeded M5
Emesso: 06.06.2024 15:34 UTC
X-ray Event exceeded M5
Begin Time: 2024 Jun 06 1450 UTC
Maximum Time: 2024 Jun 06 1506 UTC
End Time: 2024 Jun 06 1522 UTC
X-ray Class: M6.1
Optical Class: 2b
Location: S17W40
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

SUMMARY
10cm Radio Burst
Emesso: 06.06.2024 15:12 UTC
10cm Radio Burst
Begin Time: 2024 Jun 06 1500 UTC
Maximum Time: 2024 Jun 06 1501 UTC
End Time: 2024 Jun 06 1502 UTC
Duration: 2 minutes
Peak Flux: 350 sfu
Latest Penticton Noon Flux: 195 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

ALERT
X-Ray Flux exceeded M5
Emesso: 06.06.2024 15:05 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 06 1503 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Emesso: 04.06.2024 05:55 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4621
Valid From: 2024 Jun 03 2151 UTC
Now Valid Until: 2024 Jun 04 1500 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

ALERT
Geomagnetic K-index of 5
Emesso: 04.06.2024 00:10 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 03 2359 UTC
Synoptic Period: 2100-0000 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

SUMMARY
Geomagnetic Sudden Impulse
Emesso: 03.06.2024 23:10 UTC
Geomagnetic Sudden Impulse
Observed: 2024 Jun 03 2300 UTC
Deviation: 61 nT
Station: Bou

ALERT
Geomagnetic K-index of 4
Emesso: 03.06.2024 23:08 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 Jun 03 2308 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic Sudden Impulse expected
Emesso: 03.06.2024 22:31 UTC
Geomagnetic Sudden Impulse expected
Valid From: 2024 Jun 03 2230 UTC
Valid To: 2024 Jun 03 2330 UTC
IP Shock Passage Observed: 2024 Jun 03 2151 UTC

CANCEL WARNING
Geomagnetic Sudden Impulse expected
Emesso: 03.06.2024 22:30 UTC
Geomagnetic Sudden Impulse expected
Cancel Serial Number: 225
Original Issue Time: 2024 Jun 03 2204 UTC

Comment: New Warning being issued to correct times.

WARNING
Geomagnetic K-index of 5 expected
Emesso: 03.06.2024 22:06 UTC
Geomagnetic K-index of 5 expected
Valid From: 2024 Jun 03 2210 UTC
Valid To: 2024 Jun 04 0300 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic Sudden Impulse expected
Emesso: 03.06.2024 22:04 UTC
Geomagnetic Sudden Impulse expected
Valid From: 2024 Jun 03 2202 UTC
Valid To: 2024 Jun 03 2230 UTC
IP Shock Passage Observed: 2024 Jun 03 2330 UTC

WARNING
Geomagnetic K-index of 4 expected
Emesso: 03.06.2024 21:52 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 03 2151 UTC
Valid To: 2024 Jun 04 0600 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
10cm Radio Burst
Emesso: 03.06.2024 12:09 UTC
10cm Radio Burst
Begin Time: 2024 Jun 03 1152 UTC
Maximum Time: 2024 Jun 03 1152 UTC
End Time: 2024 Jun 03 1153 UTC
Duration: 1 minutes
Peak Flux: 910 sfu
Latest Penticton Noon Flux: 180 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

WATCH
Geomagnetic Storm Category G1 Predicted
Emesso: 02.06.2024 20:10 UTC
Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Jun 03: None (Below G1) Jun 04: G1 (Minor) Jun 05: None (Below G1)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

SUMMARY
X-ray Event exceeded M5
Emesso: 01.06.2024 21:04 UTC
X-ray Event exceeded M5
Begin Time: 2024 Jun 01 1903 UTC
Maximum Time: 2024 Jun 01 1939 UTC
End Time: 2024 Jun 01 2028 UTC
X-ray Class: M7.3
Optical Class: sf
Location: S18E23
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
Type IV Radio Emission
Emesso: 01.06.2024 19:49 UTC
Type IV Radio Emission
Begin Time: 2024 Jun 01 1927 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

ALERT
Type II Radio Emission
Emesso: 01.06.2024 19:34 UTC
Type II Radio Emission
Begin Time: 2024 Jun 01 1920 UTC
Estimated Velocity: 681 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT
X-Ray Flux exceeded M5
Emesso: 01.06.2024 19:26 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 01 1924 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

SUMMARY
X-ray Event exceeded X1
Emesso: 01.06.2024 19:02 UTC
X-ray Event exceeded X1
Begin Time: 2024 Jun 01 1824 UTC
Maximum Time: 2024 Jun 01 1836 UTC
End Time: 2024 Jun 01 1850 UTC
X-ray Class: X1.0
Optical Class: 2b
Location: S16E26
NOAA Scale: R3 - Strong

Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

ALERT
X-Ray Flux exceeded M5
Emesso: 01.06.2024 18:36 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 01 1834 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

SUMMARY
X-ray Event exceeded X1
Emesso: 01.06.2024 09:15 UTC
X-ray Event exceeded X1
Begin Time: 2024 Jun 01 0826 UTC
Maximum Time: 2024 Jun 01 0848 UTC
End Time: 2024 Jun 01 0858 UTC
X-ray Class: X1.4
Location: S18E30
NOAA Scale: R3 - Strong

Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

SUMMARY
10cm Radio Burst
Emesso: 01.06.2024 09:07 UTC
10cm Radio Burst
Begin Time: 2024 Jun 01 0845 UTC
Maximum Time: 2024 Jun 01 0845 UTC
End Time: 2024 Jun 01 0846 UTC
Duration: 1 minutes
Peak Flux: 210 sfu
Latest Penticton Noon Flux: 179 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

ALERT
X-Ray Flux exceeded M5
Emesso: 01.06.2024 08:50 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 01 0849 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

SUMMARY
X-ray Event exceeded X1
Emesso: 31.05.2024 22:21 UTC
X-ray Event exceeded X1
Begin Time: 2024 May 31 2152 UTC
Maximum Time: 2024 May 31 2203 UTC
End Time: 2024 May 31 2209 UTC
X-ray Class: X1.1
Optical Class: 2b
Location: S17E34
NOAA Scale: R3 - Strong

Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

ALERT
X-Ray Flux exceeded M5
Emesso: 31.05.2024 22:03 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 May 31 2201 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

ALERT
Geomagnetic K-index of 5
Emesso: 31.05.2024 05:19 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 May 31 0518 UTC
Synoptic Period: 0300-0600 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic K-index of 5 expected
Emesso: 31.05.2024 05:00 UTC
Geomagnetic K-index of 5 expected
Valid From: 2024 May 31 0500 UTC
Valid To: 2024 May 31 1200 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 4
Emesso: 31.05.2024 04:46 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 May 31 0445 UTC
Synoptic Period: 0300-0600 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 4 expected
Emesso: 31.05.2024 02:33 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 May 31 0235 UTC
Valid To: 2024 May 31 1500 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 4 expected
Emesso: 30.05.2024 16:32 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 May 30 1631 UTC
Valid To: 2024 May 30 2100 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WATCH
Geomagnetic Storm Category G2 Predicted
Emesso: 29.05.2024 21:26 UTC
Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
May 30: None (Below G1) May 31: G2 (Moderate) Jun 01: G2 (Moderate)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

SUMMARY
X-ray Event exceeded M5
Emesso: 29.05.2024 18:56 UTC
X-ray Event exceeded M5
Begin Time: 2024 May 29 1832 UTC
Maximum Time: 2024 May 29 1841 UTC
End Time: 2024 May 29 1845 UTC
X-ray Class: M5.7
Optical Class: 2b
Location: N25E10
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
X-Ray Flux exceeded M5
Emesso: 29.05.2024 18:42 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 May 29 1840 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

SUMMARY
X-ray Event exceeded X1
Emesso: 29.05.2024 15:49 UTC
X-ray Event exceeded X1
Begin Time: 2024 May 29 1411 UTC
Maximum Time: 2024 May 29 1437 UTC
End Time: 2024 May 29 1538 UTC
X-ray Class: X1.4
Optical Class: 2b
Location: S18E62
NOAA Scale: R3 - Strong

Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

ALERT
Type IV Radio Emission
Emesso: 29.05.2024 15:30 UTC
Type IV Radio Emission
Begin Time: 2024 May 29 1448 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

SUMMARY
10cm Radio Burst
Emesso: 29.05.2024 14:54 UTC
10cm Radio Burst
Begin Time: 2024 May 29 1421 UTC
Maximum Time: 2024 May 29 1423 UTC
End Time: 2024 May 29 1424 UTC
Duration: 3 minutes
Peak Flux: 300 sfu
Latest Penticton Noon Flux: 166 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

ALERT
Type II Radio Emission
Emesso: 29.05.2024 14:41 UTC
Type II Radio Emission
Begin Time: 2024 May 29 1426 UTC
Estimated Velocity: 878 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT
X-Ray Flux exceeded M5
Emesso: 29.05.2024 14:25 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 May 29 1422 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

WARNING
Geomagnetic K-index of 4 expected
Emesso: 27.05.2024 10:52 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 May 27 1051 UTC
Valid To: 2024 May 27 1500 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
X-ray Event exceeded M5
Emesso: 27.05.2024 07:48 UTC
X-ray Event exceeded M5
Begin Time: 2024 May 27 0649 UTC
Maximum Time: 2024 May 27 0708 UTC
End Time: 2024 May 27 0725 UTC
X-ray Class: X2.8
Optical Class: sf
Location: S15E90
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
Type IV Radio Emission
Emesso: 27.05.2024 07:39 UTC
Type IV Radio Emission
Begin Time: 2024 May 27 0705 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

ALERT
Type II Radio Emission
Emesso: 27.05.2024 07:31 UTC
Type II Radio Emission
Begin Time: 2024 May 27 0659 UTC
Estimated Velocity: 1135 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

SUMMARY
10cm Radio Burst
Emesso: 27.05.2024 07:22 UTC
10cm Radio Burst
Begin Time: 2024 May 27 0656 UTC
Maximum Time: 2024 May 27 0658 UTC
End Time: 2024 May 27 0705 UTC
Duration: 9 minutes
Peak Flux: 300 sfu
Latest Penticton Noon Flux: 156 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

ALERT
X-Ray Flux exceeded M5
Emesso: 27.05.2024 07:04 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 May 27 0700 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

Tabella

Data Radio flux 10.7 cm SESC Numero di macchie solari Zona macchie solari 10E-6 Nuove regioni GOES15 X-ray Bkgd flux Brillamenti
X-ray Ottica
C M X S 1 2 3
24.05.2024 163 100 890 0 * 8 3 0 12 1 0 0
25.05.2024 152 106 730 2 * 3 0 0 1 0 0 0
26.05.2024 156 148 1110 4 * 9 0 0 1 0 0 0
27.05.2024 170 116 830 0 * 8 0 1 18 0 0 0
28.05.2024 166 141 950 1 * 27 0 0 8 0 0 0
29.05.2024 171 131 820 0 * 3 6 1 23 1 3 1
30.05.2024 175 144 860 1 * 2 1 0 4 1 0 0
31.05.2024 179 135 800 1 * 15 1 1 8 2 1 0
01.06.2024 188 194 1130 2 * 12 1 2 10 0 1 0
02.06.2024 180 186 1130 1 * 15 2 0 18 0 0 0
03.06.2024 186 208 880 3 * 10 4 0 11 3 1 0
04.06.2024 192 224 680 1 * 6 2 0 19 1 0 0
05.06.2024 195 193 835 0 * 7 2 0 9 4 0 0
06.06.2024 191 149 760 2 * 8 1 0 14 0 1 0
07.06.2024 184 150 1030 1 * 9 2 0 11 0 0 0
08.06.2024 190 143 1010 0 * 3 7 0 8 2 0 0
09.06.2024 181 148 890 2 * 5 3 0 2 0 0 0
10.06.2024 178 146 840 0 * 3 5 1 4 0 0 0
11.06.2024 165 95 420 0 * 5 0 0 4 0 0 0
12.06.2024 165 145 620 5 * 5 1 0 10 1 0 0
13.06.2024 170 124 700 0 * 5 1 0 11 2 0 0
14.06.2024 169 117 660 0 * 13 1 0 6 1 0 0
15.06.2024 171 134 1290 1 * 25 1 0 35 1 0 0
16.06.2024 167 152 1440 0 * 26 0 0 21 5 0 0
17.06.2024 180 171 1820 0 * 9 3 0 23 2 0 0
18.06.2024 193 150 1690 0 * 12 2 0 10 2 0 0
19.06.2024 196 181 2070 3 * 6 1 0 28 0 0 0
20.06.2024 203 138 2370 0 * 7 2 0 10 3 0 0
21.06.2024 197 133 2420 2 * 13 0 0 14 0 0 0
22.06.2024 196 139 2550 0 * 7 3 0 21 3 0 0
Media/Totale 179 148 1141 32 286 55 6 374 35 7 1

Grafico riassuntivo

Brillamenti

Vento Solare

Vento Solare

Il vento solare è un flusso di plasma rilasciato dall'alta atmosfera del Sole. È costituito principalmente da elettroni, protoni e particelle alfa con energie generalmente comprese tra 1,5 e 10 keV. Il flusso di particelle varia in densità, temperatura e velocità nel tempo e nella longitudine solare. Queste particelle possono sfuggire alla gravità del Sole a causa della loro elevata energia, dell'elevata temperatura della corona e dei fenomeni magnetici, elettrici ed elettromagnetici in essa contenuti.

Il vento solare è diviso in due componenti, rispettivamente denominate vento solare lento e vento solare veloce. Il vento solare lento ha una velocità di circa 400 km/s, una temperatura di 1,4–1,6×10e6 K e una composizione che si avvicina molto alla corona. Al contrario, il vento solare veloce ha una velocità tipica di 750 km/s, una temperatura di 8×10e5 K e corrisponde quasi alla composizione della fotosfera del Sole. Il vento solare lento è due volte più denso e di intensità più variabile del vento solare veloce. Il vento lento ha anche una struttura più complessa, con regioni turbolente e strutture su larga scala.

Flusso radio solare a 10.7 cm

Flusso radio solare a 10.7 cm

Il flusso radio solare a 10,7 cm (2800 MHz) è un eccellente indicatore dell'attività solare. Spesso chiamato indice F10.7, è uno dei record di attività solare più longevi. Le emissioni radio F10.7 hanno origine in alto nella cromosfera e in basso nella corona dell'atmosfera solare. L'F10.7 si correla bene con il numero di macchie solari e con un numero di record di raggi ultravioletti (UV) e di irraggiamento solare visibile. Riportato in "unità di flusso solare", (s.f.u.), l'F10.7 può variare da meno di 50 s.f.u., a oltre 300 s.f.u., nel corso di un ciclo solare.

Brillamenti Solari

Brillamenti Solari

Un brillamento solare è un improvviso lampo di luminosità osservato sulla superficie del Sole o sul ramo solare, che viene interpretato come un grande rilascio di energia fino a 6 × 10e25 joule di energia. Sono spesso, ma non sempre, seguite da una colossale espulsione di massa coronale. Il bagliore espelle nello spazio nubi di elettroni, ioni e atomi attraverso la corona del sole. Queste nuvole in genere raggiungono la Terra un giorno o due dopo l'evento.

I brillamenti solari colpiscono tutti gli strati dell'atmosfera solare (fotosfera, cromosfera e corona), quando il mezzo plasmatico viene riscaldato a decine di milioni di kelvin, mentre gli elettroni, i protoni e gli ioni più pesanti vengono accelerati vicino alla velocità della luce. Producono radiazioni in tutto lo spettro elettromagnetico a tutte le lunghezze d'onda, dalle onde radio ai raggi gamma, sebbene la maggior parte dell'energia sia diffusa su frequenze al di fuori del campo visivo e per questo motivo la maggior parte dei bagliori non sono visibili ad occhio nudo e devono essere osservato con strumenti speciali. I bagliori si verificano nelle regioni attive intorno alle macchie solari, dove intensi campi magnetici penetrano nella fotosfera per collegare la corona all'interno solare. I bagliori sono alimentati dal rilascio improvviso (scale temporali da minuti a decine di minuti) di energia magnetica immagazzinata nella corona. Gli stessi rilasci di energia possono produrre espulsioni di massa coronale (CME), sebbene la relazione tra CME e brillamenti non sia ancora ben stabilita.

La frequenza di occorrenza dei brillamenti solari varia, da diversi al giorno quando il Sole è particolarmente "attivo" a meno di uno alla settimana quando il Sole è "tranquillo", seguendo il ciclo di 11 anni (il ciclo solare). I grandi bagliori sono meno frequenti di quelli più piccoli.

Classificazione

I brillamenti solari sono classificati come A, B, C, M o X in base al flusso di picco (in watt per metro quadrato, W/m2) di raggi X da 100 a 800 picometri vicino alla Terra, misurato sulla sonda GOES.

Classificazione Flusso di picco compreso tra 100 e 800 picometer
W/m2
A < 10e-7
B 10e-7 to 10e-6
C 10e-6 to 10e-5
M 10e-5 to 10e-4
X 10e-4 to 10e-3
Z > 10e-3

Una precedente classificazione dei bagliori si basa su osservazioni spettrali Hα. Lo schema utilizza sia l'intensità che la superficie di emissione. La classificazione in intensità è qualitativa, riferendosi ai brillamenti come: (f)aint, (n)ormal o (b)rilliant. La superficie di emissione è misurata in termini di milionesimi di emisfero ed è descritta di seguito. (L'area totale dell'emisfero AH = 6,2 × 1012 km2.)

Classificazione Zona corretta
(milionesimi di emisfero)
S < 100
1 100 - 250
2 250 - 600
3 600 - 1200
4 > 1200

Numero di macchie solari

Macchie Solari

Le macchie solari sono fenomeni temporanei sulla fotosfera del Sole che appaiono visibilmente come macchie scure rispetto alle regioni circostanti. Corrispondono a concentrazioni di campo magnetico che inibiscono la convezione e determinano una temperatura superficiale ridotta rispetto alla fotosfera circostante. Le macchie solari di solito compaiono in coppia, con membri di coppia di polarità magnetica opposta. Il numero di macchie solari varia in base al ciclo solare di circa 11 anni.

Le popolazioni di macchie solari aumentano rapidamente e diminuiscono più lentamente su un ciclo irregolare di 11 anni, sebbene siano note variazioni significative nel numero di macchie solari che frequentano il periodo di 11 anni in periodi di tempo più lunghi. Ad esempio, dal 1900 agli anni '60, la tendenza dei massimi solari del conteggio delle macchie solari è stata al rialzo; dagli anni '60 ad oggi è leggermente diminuito. Negli ultimi decenni il Sole ha avuto un livello medio di attività delle macchie solari decisamente alto; è stato attivo per l'ultima volta in modo simile oltre 8.000 anni fa.

Il numero di macchie solari è correlato all'intensità della radiazione solare nel periodo dal 1979, quando sono diventate disponibili le misurazioni satellitari del flusso radiativo assoluto. Poiché le macchie solari sono più scure della fotosfera circostante, ci si potrebbe aspettare che più macchie solari porterebbero a una minore radiazione solare e una costante solare ridotta. Tuttavia, i margini circostanti delle macchie solari sono più luminosi della media e quindi più caldi; nel complesso, più macchie solari aumentano la costante o luminosità solare del Sole. La variazione causata dal ciclo delle macchie solari alla produzione solare è relativamente piccola, dell'ordine dello 0,1% della costante solare (un intervallo da picco a minimo di 1,3 W/m2 rispetto a 1366 W/m2 per la costante solare media).

Indici K



Oggi


0h
UTC
3h
UTC
6h
UTC
9h
UTC
12h
UTC
15h
UTC
18h
UTC
21h
UTC
1. 33 1. 67 2.



Data


Planetario stimato

Planetario stimato

Data A Indici K (UTC)
0h 3h 6h 9h 12h 15h 18h 21h
25.05.2024 6 1. 67 1. 67 1.
26.05.2024 10 1. 67 2. 67 1.
27.05.2024 8 1. 33 1. 00 2.
28.05.2024 6 2. 67 2. 00 2.
29.05.2024 6 0. 67 1. 33 2.
30.05.2024 8 1. 00 1. 67 1.
31.05.2024 12 2. 67 4. 67 2.
01.06.2024 5 2. 33 1. 33 1.
02.06.2024 5 1. 00 1. 00 1.
03.06.2024 11 2. 33 2. 00 1.
04.06.2024 8 2. 67 3. 00 2.
05.06.2024 7 1. 00 2. 00 2.
06.06.2024 6 2. 00 2. 00 2.
07.06.2024 28 1. 33 2. 33 2.
08.06.2024 14 4. 33 3. 33 3.
09.06.2024 5 1. 67 1. 00 1.
10.06.2024 11 1. 67 1. 00 1.
11.06.2024 12 4. 00 4. 00 2.
12.06.2024 5 1. 33 0. 67 1.
13.06.2024 4 1. 00 0. 33 0.
14.06.2024 6 1. 00 1. 33 2.
15.06.2024 19 2. 33 2. 00 2.
16.06.2024 13 3. 00 1. 33 0.
17.06.2024 11 2. 00 3. 00 2.
18.06.2024 10 2. 00 2. 67 2.
19.06.2024 9 3. 00 3. 00 2.
20.06.2024 7 2. 00 1. 67 1.
21.06.2024 5 1. 67 1. 67 1.
22.06.2024 4 1. 67 1. 00 0.
23.06.2024 10 1. 33 1. 67 2.

Media latitudine

Data A Indici K
25.05.2024 6 2 1 1 1 2 2 1 3
26.05.2024 10 1 3 1 2 4 2 3 1
27.05.2024 9 1 1 2 3 3 2 2 3
28.05.2024 7 3 2 2 2 2 1 2 1
29.05.2024 10 1 1 2 2 2 4 3 2
30.05.2024 10 1 2 2 2 3 3 2 3
31.05.2024 14 3 5 2 2 3 2 2 2
01.06.2024 6 1 1 1 2 3 2 2 0
02.06.2024 5 1 0 1 2 2 1 2 2
03.06.2024 13 3 2 2 3 3 2 2 4
04.06.2024 8 2 3 3 2 3 1 1 0
05.06.2024 10 1 2 2 3 3 2 2 3
06.06.2024 7 2 2 3 2 3 1 0 1
07.06.2024 20 1 2 2 3 5 5 3 3
08.06.2024 15 4 3 3 3 3 3 2 2
09.06.2024 6 1 1 1 2 3 2 2 1
10.06.2024 11 1 1 1 2 2 4 4 2
11.06.2024 13 4 3 2 3 2 3 2 2
12.06.2024 6 1 1 1 2 3 1 2 2
13.06.2024 5 1 0 1 2 2 3 2 0
14.06.2024 8 1 1 2 3 3 1 2 2
15.06.2024 18 2 2 2 3 5 3 3 4
16.06.2024 9 3 0 0 2 3 2 3 3
17.06.2024 11 2 3 2 2 2 3 3 3
18.06.2024 11 2 3 3 2 3 3 2 1
19.06.2024 9 3 3 2 2 2 2 1
20.06.2024 8 2 2 1 2 3 1 2 3
21.06.2024 4 1 1 1 1 2 1 2 1
22.06.2024 6 2 1 1 2 3 2 1 1
23.06.2024 1 2 3 3 4 2 3

Alta latitudine

Data A Indici K
25.05.2024 6 2 2 2 1 1 2 2 1
26.05.2024 12 2 3 1 2 5 2 2 1
27.05.2024 15 0 2 2 6 3 1 1 1
28.05.2024 3 2 2 2 0 0 0 1 0
29.05.2024 3 0 1 1 0 1 1 2 1
30.05.2024 11 1 2 1 2 4 4 2 2
31.05.2024 18 3 5 4 3 4 2 1 1
01.06.2024 6 1 1 3 2 2 2 1 0
02.06.2024 2 0 1 0 1 1 1 1 1
03.06.2024 11 2 2 2 3 3 3 2 3
04.06.2024 6 2 3 3 2 1 0 0 0
05.06.2024 7 1 3 2 1 2 2 1 2
06.06.2024 5 1 2 3 2 2 1 0 0
07.06.2024 38 1 3 3 4 6 7 2 3
08.06.2024 18 5 4 3 3 3 3 2 1
09.06.2024 5 2 1 1 1 3 1 1 1
10.06.2024 7 1 1 1 3 0 2 3 2
11.06.2024 18 5 5 3 3 2 1 1 1
12.06.2024 8 1 1 2 2 3 4 1 0
13.06.2024 2 1 0 0 0 1 1 1 0
14.06.2024 12 0 2 4 4 3 1 2 2
15.06.2024 26 1 3 3 5 6 4 2 3
16.06.2024 17 3 1 0 4 5 2 4 2
17.06.2024 18 2 3 2 5 3 4 3 2
18.06.2024 23 2 3 4 5 5 4 2 2
19.06.2024 16 3 3 2 3 5 2 1
20.06.2024 8 3 2 1 2 3 1 1 2
21.06.2024 2 1 2 1 0 0 0 1 1
22.06.2024 1 1 1 0 0 0 0 0 1
23.06.2024 1 2 3 5 3 2 2

Approfondisci

Il K-index quantifica i disturbi nella componente orizzontale del campo magnetico terrestre con un numero intero compreso tra 0 e 9 con 1 calmo e 5 o più che indicano una tempesta geomagnetica. È derivato dalle fluttuazioni massime delle componenti orizzontali osservate su un magnetometro durante un intervallo di tre ore. L'etichetta K deriva dalla parola tedesca Kennziffer che significa "cifra caratteristica". Il K-index è stato introdotto da Julius Bartels nel 1938.

L'indice Kp planetario stimato di 3 ore è derivato dal NOAA Space Weather Prediction Center utilizzando i dati dei seguenti magnetometri a terra:

  • Sitka, Alaska
  • Meanook, Canada
  • Ottawa, Canada
  • Fredericksburg, Virginia
  • Hartland, UK
  • Wingst, Germany
  • Niemegk, Germany
  • Canberra, Australia

Questi dati sono resi disponibili grazie agli sforzi di cooperazione tra SWPC e fornitori di dati in tutto il mondo, che attualmente comprende l'US Geological Survey, il Natural Resources Canada (NRCAN), il British Geological Survey, il German Research Center for Geosciences (GFZ) e Geoscienze Australia. Importanti osservazioni del magnetometro sono fornite anche dall'Institut de Physique du Globe de Paris e dal Centro meteorologico spaziale coreano. Le osservazioni K-index vengono emesse quando gli indici Kp stimati dal NOAA più alti previsti per un giorno sono K = 5, 6, 7 o > = 8 ed è riportato in termini di scala NOAA G. Gli avvisi sull'indice K vengono emessi quando sono previsti indici Kp stimati dalla NOAA di 4, 5, 6 e 7 o superiori. Gli avvisi K-index vengono emessi quando gli indici Kp stimati dalla NOAA raggiungono 4, 5, 6, 7, 8 o 9.


Altre info
Origine dati: NOAA, Wikipedia

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