Space Weather Message Code: WARK06
Serial Number: 467
Issue Time: 2022 Nov 28 0532 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2022 Nov 28 0532 UTC
Valid To: 2022 Nov 28 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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.
Space Weather Message Code: ALTEF3
Serial Number: 3243
Issue Time: 2022 Sep 12 0721 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3242
Begin Time: 2022 Sep 04 1405 UTC
Yesterday Maximum 2MeV Flux: 21637 pfu
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Space Weather Message Code: ALTEF3
Serial Number: 3224
Issue Time: 2022 Aug 16 0517 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3223
Begin Time: 2022 Aug 08 1645 UTC
Yesterday Maximum 2MeV Flux: 7576 pfu
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Space Weather Message Code: ALTXMF
Serial Number: 277
Issue Time: 2022 Aug 16 0801 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2022 Aug 16 0758 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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
Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact SWPC Help.
Space Weather Message Code: ALTXMF
Serial Number: 280
Issue Time: 2022 Apr 20 0133 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2022 Apr 20 0131 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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.
Space Weather Message Code: SUMXM5
Serial Number: 155
Issue Time: 2022 Apr 20 0155 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2022 Apr 20 0120 UTC
Maximum Time: 2022 Apr 20 0136 UTC
End Time: 2022 Apr 20 0144 UTC
X-ray Class: M7.2
Location: S28W99
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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.
Space Weather Message Code: ALTK06
Serial Number: 489
Issue Time: 2022 Jan 19 0310 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2022 Jan 19 0259 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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.
Space Weather Message Code: ALTK06
Serial Number: 479
Issue Time: 2021 May 12 1232 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2021 May 12 1232 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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.
Space Weather Message Code: ALTK07
Serial Number: 115
Issue Time: 2021 May 12 1259 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2021 May 12 1258 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Every 11 years, the sun’s magnetic field flips. It all starts with a show of black sunspots on its surface, Max Planck scientist Robert Cameron explains.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2019 Oct 25 0849 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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.
Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product Subscription Site. Please do not use the from address for correspondence, as it is not monitored. For comments or help, please contact SWPC Help.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging
resulting in increased risk to satellite systems.
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2019 Sep 28 1310 UTC
Station: GOES14
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging
resulting in increased risk to satellite systems.
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2019 Sep 27 2022 UTC
Valid To: 2019 Sep 28 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
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.
Issue Time: 2019 Sep 01 1006 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2973
Begin Time: 2019 Aug 31 1540 UTC
Yesterday Maximum 2MeV Flux: 12206 pfu
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging
resulting in increased risk to satellite systems.
https://www.swpc.noaa.gov/
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2019 Feb 28 1710 UTC
Station: GOES15
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging
resulting in increased risk to satellite systems.
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2830
Begin Time: 2018 Aug 18 1410 UTC
Yesterday Maximum 2MeV Flux: 97635 pfu
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging
resulting in increased risk to satellite systems.
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