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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, July 23, 2025 03:36:55 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

Today's System Testing and Maintenance Completed

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Today's System Testing and Maintenance Completed
published: Thursday, March 02, 2023 19:34 UTC

SWPC is done with testing and maintenance for today. 

Thank you for your patience.