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National Oceanic and Atmospheric Administration

Friday, July 25, 2025 14:42:34 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

Secondary Peak in Solar Storm Likely

Secondary Peak in Solar Storm Likely
published: Monday, May 13, 2024 01:26 UTC

Forecasters are still expecting a secondary peak in the current solar storm.