Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >
Plaese go to the Space Weather Prediction Center for more information.
Items in grey italics apparently are older than 24 hours
033
WOXX21 KWNP 011246
WATA30
Space Weather Message Code: WATA30
Serial Number: 277
Issue Time: 2026 Jul 01 1240 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Jul 01: G1 (Minor) Jul 02: None (Below G1) Jul 03: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment:
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
322
WOXX13 KWNP 010556
WARK04
Space Weather Message Code: WARK04
Serial Number: 5373
Issue Time: 2026 Jul 01 0553 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5372
Valid From: 2026 Jun 30 1209 UTC
Now Valid Until: 2026 Jul 01 2100 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
323
WOXX11 KWNP 010556
WARK05
Space Weather Message Code: WARK05
Serial Number: 2245
Issue Time: 2026 Jul 01 0554 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2244
Valid From: 2026 Jun 30 1943 UTC
Now Valid Until: 2026 Jul 01 1800 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
710
WOXX32 KWNP 301641
WARPX1
Space Weather Message Code: WARPX1
Serial Number: 627
Issue Time: 2026 Jun 30 1636 UTC
CANCEL WARNING: Proton 10MeV Integral Flux above 10pfu expected
Cancel Serial Number: 626
Original Issue Time: 2026 Jun 30 1600 UTC
Conditions no longer justify warning.
Conditions no longer justify warning.NOAA Scale: S1 - Minor
# 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
189
WOXX02 KWNP 302106
SUMX01
Space Weather Message Code: SUMX01
Serial Number: 219
Issue Time: 2026 Jun 30 2104 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2026 Jun 30 2034 UTC
Maximum Time: 2026 Jun 30 2050 UTC
End Time: 2026 Jun 30 2100 UTC
Xray Class: X1.1
Optical Class: Sf
Location: N18W18
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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