Tropical Storm Imelda has formed near the Bahamas Sunday afternoon, and continues to bring heavy rainfall. The risk of significant wind impacts from Imelda along the Southeast coast are decreasing. Another round of showers and storms with a heavy rain and flash flood threat will continue in the Southwest through Monday morning. Read More >
Plaese go to the Space Weather Prediction Center for more information.
Items in grey italics apparently are older than 24 hours
778
WOXX21 KWNP 021146
WATA30
Space Weather Message Code: WATA30
Serial Number: 258
Issue Time: 2025 Oct 02 1140 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Oct 02: G2 (Moderate) Oct 03: G1 (Minor) Oct 04: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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.
# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov
985
WOXX13 KWNP 021956
WARK04
Space Weather Message Code: WARK04
Serial Number: 5095
Issue Time: 2025 Oct 02 1953 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5094
Valid From: 2025 Sep 29 0645 UTC
Now Valid Until: 2025 Oct 04 0000 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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.
# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov
780
WOXX11 KWNP 022311
WARK05
Space Weather Message Code: WARK05
Serial Number: 2114
Issue Time: 2025 Oct 02 2307 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2113
Valid From: 2025 Sep 30 0114 UTC
Now Valid Until: 2025 Oct 03 0900 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
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.
# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov
773
WOXX12 KWNP 021041
WARK06
Space Weather Message Code: WARK06
Serial Number: 613
Issue Time: 2025 Oct 02 1037 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 612
Valid From: 2025 Sep 30 0252 UTC
Now Valid Until: 2025 Oct 02 1500 UTC
Warning Condition: Persistence
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.
# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov
863
WOXX14 KWNP 020421
WARK07
Space Weather Message Code: WARK07
Serial Number: 134
Issue Time: 2025 Oct 02 0418 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2025 Oct 02 0418 UTC
Valid To: 2025 Oct 02 1200 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
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.
# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov
342
WOXX14 KWNP 020606
ALTK07
Space Weather Message Code: ALTK07
Serial Number: 192
Issue Time: 2025 Oct 02 0602 UTC
ALERT: Geomagnetic K-index of 7
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
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.
# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov