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National Oceanic and Atmospheric Administration

Saturday, June 21, 2025 03:32:59 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.
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Just In Time...

Just In Time...
published: Tuesday, April 20, 2021 22:12 UTC

Just in time for Space Weather Workshop 2021, Region 2816 (lower left quadrant of the sun) produced an M1solar flare at 19/2342 UTC! Radio sweeps and GOES SUVI imagery suggests a possible CME. We'll be examining coronagraph imagery in the coming hours.