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National Oceanic and Atmospheric Administration

Monday, March 31, 2025 22:08:56 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

G4 Conditions Observed!

G4 Conditions Observed!
published: Saturday, May 11, 2024 00:00 UTC

G4 conditions were observed by SWPC around 12:37 p.m. EDT today and significant to severe geomagnetic storming is likely to continue.