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National Oceanic and Atmospheric Administration

Friday, March 28, 2025 22:01:50 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

R2 (Moderate) Radio Blackout Observed

R2 (Moderate) Radio Blackout Observed
published: Saturday, March 04, 2023 15:31 UTC

Region 3234 produced an M8.6 flare, which peaked at 28/1750 UTC. Flares of this magnitude correlate with R2 (Moderate) radio blackouts. The sunlit side of the Earth, including the CONUS, may have experienced temporary or limited blackouts of High Frequency (HF) radio signals. Conditions are expected to improve over the next few hours.