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EXTENDED WARNING
Geomagnetic K-index of 4 expected
Issued: 22.05.2022 14.55 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4106
Valid From: 2022 May 22 0120 UTC
Now Valid Until: 2022 May 22 2359 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
Issued: 22.05.2022 08.40 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4105
Valid From: 2022 May 22 0120 UTC
Now Valid Until: 2022 May 22 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 4
Issued: 22.05.2022 01.50 UTC
Geomagnetic K-index of 4
Threshold Reached: 2022 May 22 0150 UTC
Synoptic Period: 0000-0300 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
Publié: 22.05.2022 01.21 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 May 22 0120 UTC
Valid To: 2022 May 22 0900 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
Geomagnetic K-index of 4
Publié: 21.05.2022 00.00 UTC
Geomagnetic K-index of 4
Threshold Reached: 2022 May 20 2359 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 K-index of 4 expected
Publié: 20.05.2022 22.42 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 May 20 2240 UTC
Valid To: 2022 May 21 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
Publié: 20.05.2022 08.08 UTC
10cm Radio Burst
Begin Time: 2022 May 20 0743 UTC
Maximum Time: 2022 May 20 0744 UTC
End Time: 2022 May 20 0745 UTC
Duration: 2 minutes
Peak Flux: 210 sfu
Latest Penticton Noon Flux: 173 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
Publié: 19.05.2022 13.18 UTC
Type II Radio Emission
Begin Time: 2022 May 19 1202 UTC
Estimated Velocity: 441 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
Publié: 19.05.2022 07.36 UTC
X-ray Event exceeded M5
Begin Time: 2022 May 19 0700 UTC
Maximum Time: 2022 May 19 0719 UTC
End Time: 2022 May 19 0731 UTC
X-ray Class: M5.6
Optical Class: 2b
Location: N16E31
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
Publié: 19.05.2022 07.21 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2022 May 19 0716 UTC
NOAA Scale: R2 - Moderate

Comment: In progress

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
Publié: 17.05.2022 13.58 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 May 17 1358 UTC
Valid To: 2022 May 17 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 K-index of 4 expected
Publié: 16.05.2022 05.00 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 May 16 0500 UTC
Valid To: 2022 May 16 0900 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
Geomagnetic K-index of 4
Publié: 15.05.2022 02.53 UTC
Geomagnetic K-index of 4
Threshold Reached: 2022 May 15 0247 UTC
Synoptic Period: 0000-0300 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
Publié: 15.05.2022 02.30 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 May 15 0229 UTC
Valid To: 2022 May 15 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.

ALERT
Type II Radio Emission
Publié: 11.05.2022 19.39 UTC
Type II Radio Emission
Begin Time: 2022 May 11 1824 UTC
Estimated Velocity: 1258 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
Publié: 11.05.2022 18.57 UTC
Type IV Radio Emission
Begin Time: 2022 May 11 1824 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 IV Radio Emission
Publié: 10.05.2022 16.39 UTC
Type IV Radio Emission
Begin Time: 2022 May 10 1451 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 IV Radio Emission
Publié: 10.05.2022 14.54 UTC
Type IV Radio Emission
Begin Time: 2022 May 10 1407 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
Publié: 10.05.2022 14.47 UTC
Type II Radio Emission
Begin Time: 2022 May 10 1358 UTC
Estimated Velocity: 1767 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 X1
Publié: 10.05.2022 14.12 UTC
X-ray Event exceeded X1
Begin Time: 2022 May 10 1350 UTC
Maximum Time: 2022 May 10 1355 UTC
End Time: 2022 May 10 1359 UTC
X-ray Class: X1.5
Location: S29W01
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
Publié: 10.05.2022 13.58 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2022 May 10 1355 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
Publié: 09.05.2022 04.36 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 May 09 0436 UTC
Valid To: 2022 May 09 0900 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.

CONTINUED ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 08.05.2022 14.56 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3235
Begin Time: 2022 May 01 1335 UTC
Yesterday Maximum 2MeV Flux: 1408 pfu

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

CONTINUED ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 07.05.2022 12.32 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3234
Begin Time: 2022 May 01 1335 UTC
Yesterday Maximum 2MeV Flux: 1355 pfu

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

CONTINUED ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 06.05.2022 06.33 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3233
Begin Time: 2022 May 01 1335 UTC
Yesterday Maximum 2MeV Flux: 1688 pfu

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

CONTINUED ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 05.05.2022 14.26 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3232
Begin Time: 2022 May 01 1335 UTC
Yesterday Maximum 2MeV Flux: 1468 pfu

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

ALERT
Type IV Radio Emission
Publié: 05.05.2022 01.15 UTC
Type IV Radio Emission
Begin Time: 2022 May 04 2233 UTC

Comment: Observed by PAL

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.

CONTINUED ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 04.05.2022 11.56 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3231
Begin Time: 2022 May 01 1335 UTC
Yesterday Maximum 2MeV Flux: 2317 pfu

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

SUMMARY
X-ray Event exceeded M5
Publié: 04.05.2022 09.19 UTC
X-ray Event exceeded M5
Begin Time: 2022 May 04 0845 UTC
Maximum Time: 2022 May 04 0859 UTC
End Time: 2022 May 04 0910 UTC
X-ray Class: M5.7
Location: S16W19
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
Publié: 04.05.2022 09.01 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2022 May 04 0858 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
Type IV Radio Emission
Publié: 04.05.2022 00.40 UTC
Type IV Radio Emission
Begin Time: 2022 May 04 0000 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
X-ray Event exceeded M5
Publié: 04.05.2022 00.33 UTC
X-ray Event exceeded M5
Begin Time: 2022 May 04 0008 UTC
Maximum Time: 2022 May 04 0019 UTC
End Time: 2022 May 04 0025 UTC
X-ray Class: M5.3
Location: S30E91
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
Publié: 04.05.2022 00.21 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2022 May 04 0018 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
Type IV Radio Emission
Publié: 03.05.2022 21.58 UTC
Type IV Radio Emission
Begin Time: 2022 May 03 2042 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
X-ray Event exceeded X1
Publié: 03.05.2022 13.53 UTC
X-ray Event exceeded X1
Begin Time: 2022 May 03 1309 UTC
Maximum Time: 2022 May 03 1325 UTC
End Time: 2022 May 03 1331 UTC
X-ray Class: X1.1
Optical Class: sf
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
Publié: 03.05.2022 13.30 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2022 May 03 1323 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.

CONTINUED ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 03.05.2022 08.26 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3230
Begin Time: 2022 May 01 1335 UTC
Yesterday Maximum 2MeV Flux: 1539 pfu

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

CONTINUED ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 02.05.2022 12.43 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3229
Begin Time: 2022 May 01 1335 UTC
Yesterday Maximum 2MeV Flux: 1554 pfu

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 01.05.2022 13.53 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2022 May 01 1335 UTC
Station: GOES16


Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

ALERT
Type II Radio Emission
Publié: 30.04.2022 14.40 UTC
Type II Radio Emission
Begin Time: 2022 Apr 30 1345 UTC
Estimated Velocity: 1071 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 X1
Publié: 30.04.2022 14.29 UTC
X-ray Event exceeded X1
Begin Time: 2022 Apr 30 1337 UTC
Maximum Time: 2022 Apr 30 1347 UTC
End Time: 2022 Apr 30 1352 UTC
X-ray Class: X1.1
Location: N15W96
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
Publié: 30.04.2022 13.47 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2022 Apr 30 1344 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
Type II Radio Emission
Publié: 30.04.2022 10.23 UTC
Type II Radio Emission
Begin Time: 2022 Apr 30 0957 UTC
Estimated Velocity: 1154 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
Geomagnetic K-index of 5
Publié: 30.04.2022 05.42 UTC
Geomagnetic K-index of 5
Threshold Reached: 2022 Apr 30 0540 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.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 30.04.2022 02.34 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4098
Valid From: 2022 Apr 30 0038 UTC
Now Valid Until: 2022 Apr 30 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.

WARNING
Geomagnetic K-index of 5 expected
Publié: 30.04.2022 02.33 UTC
Geomagnetic K-index of 5 expected
Valid From: 2022 Apr 30 0233 UTC
Valid To: 2022 Apr 30 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
Publié: 30.04.2022 02.15 UTC
Geomagnetic K-index of 4
Threshold Reached: 2022 Apr 30 0207 UTC
Synoptic Period: 0000-0300 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
Publié: 30.04.2022 00.38 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 Apr 30 0038 UTC
Valid To: 2022 Apr 30 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.

ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 29.04.2022 12.55 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2022 Apr 29 1220 UTC
Station: GOES16


Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

SUMMARY
10cm Radio Burst
Publié: 29.04.2022 07.48 UTC
10cm Radio Burst
Begin Time: 2022 Apr 29 0720 UTC
Maximum Time: 2022 Apr 29 0721 UTC
End Time: 2022 Apr 29 0728 UTC
Duration: 8 minutes
Peak Flux: 230 sfu
Latest Penticton Noon Flux: 132 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.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 29.04.2022 05.55 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4096
Valid From: 2022 Apr 29 0126 UTC
Now Valid Until: 2022 Apr 29 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 4
Publié: 29.04.2022 02.58 UTC
Geomagnetic K-index of 4
Threshold Reached: 2022 Apr 29 0259 UTC
Synoptic Period: 0000-0300 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
Publié: 29.04.2022 01.26 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 Apr 29 0126 UTC
Valid To: 2022 Apr 29 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.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 28.04.2022 05.28 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4094
Valid From: 2022 Apr 27 1310 UTC
Now Valid Until: 2022 Apr 28 1200 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
Publié: 28.04.2022 00.00 UTC
Geomagnetic K-index of 5
Threshold Reached: 2022 Apr 27 2359 UTC
Synoptic Period: 2100-2400 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
Publié: 27.04.2022 23.39 UTC
Geomagnetic K-index of 5 expected
Valid From: 2022 Apr 27 2338 UTC
Valid To: 2022 Apr 28 0600 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.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 27.04.2022 20.54 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4093
Valid From: 2022 Apr 27 1310 UTC
Now Valid Until: 2022 Apr 28 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
Publié: 27.04.2022 17.11 UTC
10cm Radio Burst
Begin Time: 2022 Apr 27 1652 UTC
Maximum Time: 2022 Apr 27 1652 UTC
End Time: 2022 Apr 27 1652 UTC
Duration: 1 minutes
Peak Flux: 280 sfu
Latest Penticton Noon Flux: 150 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
Geomagnetic K-index of 5
Publié: 27.04.2022 14.03 UTC
Geomagnetic K-index of 5
Threshold Reached: 2022 Apr 27 1402 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
Publié: 27.04.2022 13.57 UTC
Geomagnetic K-index of 5 expected
Valid From: 2022 Apr 27 1356 UTC
Valid To: 2022 Apr 27 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
Publié: 27.04.2022 13.53 UTC
Geomagnetic K-index of 4
Threshold Reached: 2022 Apr 27 1350 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
Publié: 27.04.2022 13.09 UTC
Geomagnetic K-index of 4 expected
Valid From: 2022 Apr 27 1310 UTC
Valid To: 2022 Apr 27 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 G1 Predicted
Publié: 26.04.2022 20.11 UTC
Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Apr 27: None (Below G1) Apr 28: None (Below G1) Apr 29: G1 (Minor)

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.

Table

Date Radio flux 10.7 cm SESC Le nombre des taches solaires Tache de la zone 10E-6 De nouvelles régions GOES15 X-ray Bkgd flux éclairs
X-ray Optique
C M X S 1 2 3
24-04-2022 159 112 1600 0 * 3 0 0 2 0 0 0
25-04-2022 157 94 1320 1 * 8 2 0 7 0 0 0
26-04-2022 150 126 1170 2 * 7 0 0 3 0 0 0
27-04-2022 142 95 910 0 * 4 0 0 7 1 0 0
28-04-2022 132 118 800 1 * 7 0 0 2 0 0 0
29-04-2022 124 90 450 1 * 7 2 0 2 1 0 0
30-04-2022 120 50 390 0 * 15 4 1 0 0 0 0
01-05-2022 109 36 280 0 * 5 0 0 1 0 0 0
02-05-2022 112 69 240 2 * 2 0 0 0 0 0 0
03-05-2022 114 53 270 0 * 7 1 1 4 0 0 0
04-05-2022 130 64 530 1 * 15 5 0 19 3 0 0
05-05-2022 120 85 720 0 * 30 2 0 11 0 0 0
06-05-2022 119 64 650 0 * 15 0 0 2 0 0 0
07-05-2022 118 66 660 0 * 4 0 0 1 0 0 0
08-05-2022 119 89 740 1 * 6 0 0 1 0 0 0
09-05-2022 117 71 450 0 * 6 0 0 2 0 0 0
10-05-2022 116 62 420 0 * 9 0 1 17 2 0 0
11-05-2022 133 84 450 2 * 17 3 0 24 3 0 0
12-05-2022 133 112 580 1 * 9 1 0 11 0 0 0
13-05-2022 150 120 610 2 * 8 0 0 6 0 0 0
14-05-2022 153 105 580 1 * 10 1 0 10 0 0 0
15-05-2022 154 129 720 2 * 2 0 0 1 0 0 0
16-05-2022 162 173 800 2 * 4 1 0 4 0 0 0
17-05-2022 171 153 680 1 * 8 0 0 2 0 0 0
18-05-2022 180 147 1350 0 * 9 1 0 6 0 0 0
19-05-2022 173 154 1500 1 * 5 3 0 17 1 0 0
20-05-2022 166 109 1400 0 * 5 1 0 9 2 0 0
21-05-2022 167 110 1100 0 * 6 0 0 5 0 0 0
22-05-2022 165 138 1040 2 * 7 0 0 3 0 0 0
23-05-2022 158 132 1050 0 * 2 0 0 1 0 0 0
Moyenne/Total 141 100 782 23 242 27 3 180 13 0 0

Graphique de synthèse

éclairs

Solar wind

Solar Wind

Le vent solaire est un flux de plasma libéré de la haute atmosphère du Soleil. Il se compose principalement d'électrons, de protons et de particules alpha avec des énergies généralement comprises entre 1,5 et 10 keV. Le flux de particules varie en densité, température et vitesse dans le temps et sur la longitude solaire. Ces particules peuvent échapper à la gravité du Soleil en raison de leur haute énergie, de la température élevée de la couronne et des phénomènes magnétiques, électriques et électromagnétiques qu'elle contient.

Le vent solaire est divisé en deux composantes, respectivement appelées le vent solaire lent et le vent solaire rapide. Le vent solaire lent a une vitesse d'environ 400 km / s, une température de 1,4–1,6 × 10e6 K et une composition proche de la couronne. En revanche, le vent solaire rapide a une vitesse typique de 750 km / s, une température de 8 × 10e5 K et il correspond presque à la composition de la photosphère du Soleil. Le vent solaire lent est deux fois plus dense et plus variable en intensité que le vent solaire rapide. Le vent lent a également une structure plus complexe, avec des régions turbulentes et des structures à grande échelle.

Solar radio flux at 10.7 cm

Solar radio flux at 10.7 cm

Le flux radioélectrique solaire à 10,7 cm (2800 MHz) est un excellent indicateur de l'activité solaire. Souvent appelé indice F10.7, c'est l'un des enregistrements les plus anciens d'activité solaire. Les émissions radio F10.7 proviennent de haut dans la chromosphère et bas dans la couronne de l'atmosphère solaire. Le F10.7 est bien corrélé avec le nombre de taches solaires ainsi qu'avec un certain nombre d'enregistrements d'irradiance solaire UltraViolet (UV) et visible. Rapporté en «unités de flux solaire» (s.f.u.), le F10.7 peut varier de moins de 50 s.f.u., à plus de 300 s.f.u., au cours d'un cycle solaire.

Flares

Flares

Une éruption solaire est un éclair soudain de luminosité observé à la surface du Soleil ou sur le flanc solaire, qui est interprété comme une importante libération d'énergie allant jusqu'à 6 × 10e25 joules d'énergie. Ils sont souvent, mais pas toujours, suivis d'une éjection de masse coronale colossale. La fusée éjecte des nuages ​​d'électrons, d'ions et d'atomes à travers la couronne du soleil dans l'espace. Ces nuages ​​atteignent généralement la Terre un jour ou deux après l'événement.

Les éruptions solaires affectent toutes les couches de l'atmosphère solaire (photosphère, chromosphère et couronne), lorsque le milieu plasma est chauffé à des dizaines de millions de kelvin, tandis que les électrons, les protons et les ions plus lourds sont accélérés à près de la vitesse de la lumière. Ils produisent un rayonnement à travers le spectre électromagnétique à toutes les longueurs d'onde, des ondes radio aux rayons gamma, bien que la plupart de l'énergie soit répartie sur des fréquences en dehors de la plage visuelle et pour cette raison, la majorité des fusées éclairantes ne sont pas visibles à l'œil nu et doivent être observé avec des instruments spéciaux. Les éruptions se produisent dans les régions actives autour des taches solaires, où des champs magnétiques intenses pénètrent dans la photosphère pour relier la couronne à l'intérieur solaire. Les fusées éclairantes sont alimentées par la libération soudaine (de quelques minutes à des dizaines de minutes) d'énergie magnétique stockée dans la couronne. Les mêmes rejets d'énergie peuvent produire des éjections de masse coronale (CME), bien que la relation entre les CME et les éruptions ne soit pas encore bien établie.

La fréquence d'apparition des éruptions solaires varie, de plusieurs par jour lorsque le Soleil est particulièrement «actif» à moins d'une par semaine lorsque le Soleil est «calme», suivant le cycle de 11 ans (le cycle solaire). Les grosses fusées éclairantes sont moins fréquentes que les plus petites.

Classification

Les éruptions solaires sont classées comme A, B, C, M ou X selon le flux de pointe (en watts par mètre carré, W / m2) de rayons X de 100 à 800 picomètres près de la Terre, tel que mesuré sur le vaisseau spatial GOES.

Classification Peak Flux Range at 100-800 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

An earlier flare classification is based on Hα spectral observations. The scheme uses both the intensity and emitting surface. The classification in intensity is qualitative, referring to the flares as: (f)aint, (n)ormal or (b)rilliant. The emitting surface is measured in terms of millionths of the hemisphere and is described below. (The total hemisphere area AH = 6.2 × 1012 km2.)

Classification Corrected area
(millionths of hemisphere)
S < 100
1 100 - 250
2 250 - 600
3 600 - 1200
4 > 1200

Sunspot number

Sunspots

Les taches solaires sont des phénomènes temporaires sur la photosphère du Soleil qui apparaissent visiblement comme des taches sombres par rapport aux régions environnantes. Ils correspondent à des concentrations de champ magnétique qui inhibent la convection et entraînent une température de surface réduite par rapport à la photosphère environnante. Les taches solaires apparaissent généralement par paires, avec des membres de paires de polarité magnétique opposée. Le nombre de taches solaires varie en fonction du cycle solaire d'environ 11 ans.

Les populations de taches solaires augmentent rapidement et diminuent plus lentement selon un cycle irrégulier de 11 ans, bien que des variations significatives du nombre de taches solaires observant la période de 11 ans soient connues sur des périodes plus longues. Par exemple, de 1900 aux années 1960, la tendance des maxima solaires du nombre de taches solaires a été à la hausse; des années 1960 à nos jours, il a quelque peu diminué. Au cours des dernières décennies, le Soleil a eu un niveau moyen d'activité des taches solaires nettement élevé; il était également actif pour la dernière fois il y a plus de 8 000 ans.

Le nombre de taches solaires est en corrélation avec l'intensité du rayonnement solaire au cours de la période depuis 1979, lorsque les mesures par satellite du flux radiatif absolu sont devenues disponibles. Étant donné que les taches solaires sont plus sombres que la photosphère environnante, on peut s'attendre à ce que plus de taches solaires conduisent à moins de rayonnement solaire et à une constante solaire diminuée. Cependant, les marges environnantes des taches solaires sont plus lumineuses que la moyenne et sont donc plus chaudes; Dans l'ensemble, plus de taches solaires augmentent la constante solaire ou la luminosité du Soleil. La variation causée par le cycle des taches solaires à la production solaire est relativement faible, de l'ordre de 0,1% de la constante solaire (une plage pic à creux de 1,3 W / m2 contre 1366 W / m2 pour la constante solaire moyenne).

K-indices



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Data


Estimated Planetary

Estimated Planetary

Date A K-indices (UTC)
0h 3h 6h 9h 12h 15h 18h 21h
25-04-2022 5 1 1 1 2 1 1 2 1
26-04-2022 3 0 0 1 1 1 1 1 1
27-04-2022 21 2 2 1 1 5 4 3 5
28-04-2022 14 3 3 4 2 2 2 3 3
29-04-2022 15 4 4 3 2 3 3 3 2
30-04-2022 18 4 5 3 3 2 3 2 2
01-05-2022 9 3 3 3 2 2 1 2 2
02-05-2022 6 3 2 1 1 1 1 2 1
03-05-2022 7 2 2 2 2 2 1 1 2
04-05-2022 6 2 2 2 2 2 0 1 2
05-05-2022 4 1 1 2 1 1 1 1 1
06-05-2022 5 0 1 2 1 2 2 1 1
07-05-2022 3 1 1 1 1 1 0 0 2
08-05-2022 6 2 1 1 2 2 2 1 2
09-05-2022 8 3 3 2 2 2 1 1 0
10-05-2022 3 0 1 0 1 2 1 1 1
11-05-2022 6 1 1 1 1 2 2 2 2
12-05-2022 8 2 2 2 1 2 2 2 2
13-05-2022 7 2 1 2 2 2 1 2 3
14-05-2022 7 2 1 2 2 1 3 2 2
15-05-2022 12 4 4 3 2 3 3 2 1
16-05-2022 10 2 3 3 3 2 2 2 1
17-05-2022 12 1 3 3 3 3 2 2 2
18-05-2022 7 3 2 1 2 1 1 2 2
19-05-2022 10 3 3 3 2 3 2 2 2
20-05-2022 12 2 3 2 3 2 3 2 4
21-05-2022 10 3 3 2 1 3 3 2 0
22-05-2022 11 4 3 3 2 3 2 1 1
23-05-2022 5 2 1 3 2 1 1 0 0
24-05-2022 4 1 2 1

Middle Latitude

Date A K-indices
25-04-2022 4 0 0 1 2 2 1 2 1
26-04-2022 3 0 0 1 1 2 1 1 1
27-04-2022 16 2 2 2 1 5 3 3 4
28-04-2022 11 2 3 3 1 2 2 3 3
29-04-2022 10 3 3 2 2 3 2 2 2
30-04-2022 16 4 4 3 1 3 4 2 2
01-05-2022 9 2 3 3 2 2 2 2 2
02-05-2022 6 2 2 1 1 2 2 2 1
03-05-2022 7 1 2 3 2 2 1 2 2
04-05-2022 6 2 2 2 2 2 0 2 2
05-05-2022 4 1 1 1 1 2 2 1 1
06-05-2022 0 1 2 1 2 2 1
07-05-2022 4 2 0 0 1 2 1 1 2
08-05-2022 7 3 2 1 2 2 1 2 2
09-05-2022 8 2 4 2 2 2 1 1 1
10-05-2022 2 0 0 0 1 2 1 1 1
11-05-2022 5 1 1 1 1 2 2 2 2
12-05-2022 8 2 2 1 1 3 2 3 2
13-05-2022 7 2 1 1 1 3 1 2 3
14-05-2022 9 2 1 2 2 2 3 3 2
15-05-2022 10 3 3 2 2 3 2 2 2
16-05-2022 11 1 3 3 4 2 2 2 1
17-05-2022 15 2 3 4 4 4 1 2 2
18-05-2022 7 3 2 1 2 2 1 2 2
19-05-2022 10 2 2 3 3 3 2 2 2
20-05-2022 12 1 2 2 4 3 3 1 3
21-05-2022 9 3 3 2 2 3 2 1 1
22-05-2022 11 3 3 4 2 2 2 2 1
23-05-2022 6 1 1 3 3 2 1 1 0
24-05-2022 0 0 1

High Latitude

Date A K-indices
25-04-2022 8 0 1 1 5 2 1 1 0
26-04-2022 1 0 0 1 0 1 0 0 0
27-04-2022 22 2 2 1 1 6 5 3 3
28-04-2022 21 3 3 5 5 3 3 2 2
29-04-2022 23 2 4 3 5 5 4 2 2
30-04-2022 33 5 5 5 5 3 5 1 1
01-05-2022 11 1 3 3 4 3 1 1 2
02-05-2022 3 2 2 0 0 0 1 1 0
03-05-2022 10 1 2 3 3 4 1 1 1
04-05-2022 13 2 2 5 3 3 1 1 1
05-05-2022 4 0 2 3 0 1 1 1 0
06-05-2022 0 0 3 2 3 1 0
07-05-2022 1 0 0 0 0 1 0 0 1
08-05-2022 7 2 1 1 3 2 3 1 1
09-05-2022 11 2 4 4 2 3 1 1 0
10-05-2022 1 0 1 0 0 1 1 0 0
11-05-2022 4 0 1 1 2 1 2 1 2
12-05-2022 13 2 4 3 1 4 3 2 1
13-05-2022 6 1 2 1 3 2 1 1 1
14-05-2022 6 2 2 2 2 1 2 2 1
15-05-2022 18 4 4 4 4 3 2 2 1
16-05-2022 17 1 3 4 4 5 2 2 0
17-05-2022 21 1 3 4 5 5 3 2 2
18-05-2022 6 2 1 0 3 2 1 1 2
19-05-2022 10 2 3 3 1 3 2 2 2
20-05-2022 15 2 3 2 5 3 3 2 2
21-05-2022 25 2 4 3 2 6 5 3 1
22-05-2022 23 2 4 4 4 6 2 2 1
23-05-2022 11 2 1 5 4 0 0 0 0
24-05-2022 1 1 0

About

The K-index quantifies disturbances in the horizontal component of earth's magnetic field with an integer in the range 0–9 with 1 being calm and 5 or more indicating a geomagnetic storm. It is derived from the maximum fluctuations of horizontal components observed on a magnetometer during a three-hour interval. The label K comes from the German word Kennziffer meaning “characteristic digit”. The K-index was introduced by Julius Bartels in 1938.

The Estimated 3-hour Planetary Kp-index is derived at the NOAA Space Weather Prediction Center using data from the following ground-based magnetometers:

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

These data are made available thanks to the cooperative efforts between SWPC and data providers around the world, which currently includes the U.S. Geological Survey, Natural Resources Canada (NRCAN), the British Geological Survey, the German Research Centre for Geosciences (GFZ), and Geoscience Australia. Important magnetometer observations are also contributed by the Institut de Physique du Globe de Paris and the Korean Space Weather Center K-index Watches are issued when the highest predicted NOAA estimated Kp-indices for a day are K = 5, 6, 7, or >= 8 and is reported in terms of the NOAA G scale. K-index Warnings are issued when NOAA estimated Kp-indices of 4, 5, 6, and 7 or greater are expected. K-index Alerts are issued when the NOAA estimated Kp-indices reach 4, 5, 6, 7, 8, or 9.


More info
Source de données: NOAA, Wikipedia

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