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National Oceanic and Atmospheric Administration

Sunday, May 18, 2025 22:23:23 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

G2 (Moderate) Geomagnetic Storm Watch for 09-11 Aug

G2 (Moderate) Geomagnetic Storm Watch 09-11 Aug
G2 (Moderate) Geomagnetic Storm Watch for 09-11 Aug
published: Monday, August 12, 2024 13:49 UTC

A G2 (Moderate) geomagnetic storm watch is in place for 09-11 August in response to CME event's that left the sun on 07-08 Aug. See our latest discussion at https://www.swpc.noaa.gov/products/forecast-discussion for additional details.