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National Oceanic and Atmospheric Administration

Thursday, June 05, 2025 14:25:10 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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G1 Watch for 25 September

G1 Watch for 25 September
published: Thursday, September 26, 2024 13:55 UTC

A CME associated with an M3.8 flare at 22/1318 UTC is anticipated to arrive 25 Sep. A G1 Watch has been issued.