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National Oceanic and Atmospheric Administration

Tuesday, May 06, 2025 01:45:57 UTC

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NOAA Scales mini

R1 (Minor) Radio Blackout Impacts
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HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
More about the NOAA Space Weather Scales

G1 (Minor) Geomagnetic Storm Warning Issued

G1 (Minor) Geomagnetic Storm Warning Issued
G1 (Minor) Geomagnetic Storm Warning Issued
published: Friday, September 15, 2017 03:38 UTC

A G1 (Minor) storm warning is in effect today, 14 Sep, from 1445 to 2100 UTC, as a result of a positive polarity CH HSS that has begun to affect the near-Earth environment. Stay tuned for additional updates at swpc.noaa.gov.