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National Oceanic and Atmospheric Administration

Saturday, May 10, 2025 10:24:21 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

Tutorial on electric power grid impacts

Tutorial on electric power grid impacts
published: Tuesday, September 29, 2015 19:45 UTC

Learn more about how this storm may be impacting the power grid.

Follow this link to the SWPC About Space Weather Impacts page.