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National Oceanic and Atmospheric Administration

Saturday, June 14, 2025 08:50:10 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 (Minor) Geomagnetic Storm Warning Valid 21/2355-22/0900 UTC

Auroral Prediction
G1 (Minor) Geomagnetic Storm Warning Valid 21/2355-22/0900 UTC
published: Saturday, September 22, 2018 10:09 UTC

A G1 (Minor) geomagnetic storm warning is valid from 21/2355-22/0900 UTC. A G1 (Minor) storm Alert was issued for conditions observed at 21/2359 UTC.