Plaese go to the Space Weather Prediction Center for more information.
Items in grey italics apparently are older than 24 hours
148
WOXX21 KWNP 031126
WATA30
Space Weather Message Code: WATA30
Serial Number: 278
Issue Time: 2026 Jul 03 1123 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Jul 03: G2 (Moderate) Jul 04: G2 (Moderate) Jul 05: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Added G1 (Minor) Watch for 05 Jul.
Added G1 (Minor) Watch for 05 Jul.
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
276
WOXX10 KWNP 031141
WARSUD
Space Weather Message Code: WARSUD
Serial Number: 256
Issue Time: 2026 Jul 03 1138 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2026 Jul 03 1157 UTC
Valid To: 2026 Jul 03 1227 UTC
Ip Shock: 2026-07-03 11:20
Comment:
# 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
715
WOXX13 KWNP 080531
WARK04
Space Weather Message Code: WARK04
Serial Number: 5380
Issue Time: 2026 Jul 08 0529 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Jul 08 0528 UTC
Valid To: 2026 Jul 08 1200 UTC
Warning Conditions: Onset
Comment:
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
545
WOXX11 KWNP 041416
WARK05
Space Weather Message Code: WARK05
Serial Number: 2248
Issue Time: 2026 Jul 04 1412 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2247
Valid From: 2026 Jul 04 0100 UTC
Now Valid Until: 2026 Jul 04 2359 UTC
Warning Condition: Persistence
NOAA Scale: G1 - Minor
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
017
WOXX12 KWNP 050011
WARK06
Space Weather Message Code: WARK06
Serial Number: 666
Issue Time: 2026 Jul 05 0005 UTC
CANCEL WARNING: Geomagnetic K-index of 6 expected
Cancel Serial Number: 665
Original Issue Time: 2026 Jul 04 1357 UTC
Wrong date in the original end time. Warning was supposed to expire at 04/2100z.
Wrong date in the original end time. Warning was supposed to expire at 04/2100z.NOAA Scale: G2 - Moderate
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
724
WOXX14 KWNP 050031
WARK07
Space Weather Message Code: WARK07
Serial Number: 152
Issue Time: 2026 Jul 05 0027 UTC
CANCEL WARNING: Geomagnetic K-index of 7 or greater expected
Cancel Serial Number: 151
Original Issue Time: 2026 Jul 04 0501 UTC
Wrong date in the original end time. Warning was supposed to expire at 04/1200z.
Wrong date in the original end time. Warning was supposed to expire at 04/1200z. NOAA Scale: G3 - Greater
# 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
889
WOXX14 KWNP 040516
ALTK07
Space Weather Message Code: ALTK07
Serial Number: 218
Issue Time: 2026 Jul 04 0509 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2026 Jul 04 0509 UTC
Synoptic Period: 0300-0600
Active Warning: YES
Noaa Scale: G3 - Strong
Comment:
NOAA Scale: G3 - Strong
# 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
782
WOXX02 KWNP 042121
SUMX01
Space Weather Message Code: SUMX01
Serial Number: 220
Issue Time: 2026 Jul 04 2116 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2026 Jul 04 2029 UTC
Maximum Time: 2026 Jul 04 2041 UTC
End Time: 2026 Jul 04 2047 UTC
Xray Class: X1.3
Optical Class:
Location: N15W75
Noaa Scale: R3 - Strong
Comment:
NOAA Scale: R3 - Strong
www.swpc.noaa.gov/noaa-scales-explanation
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.
# 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
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