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National Oceanic and Atmospheric Administration

Thursday, April 10, 2025 05:08:58 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

G2 (Moderate) Geomagnetic Storm Warning in Effect

G2 (Moderate) Geomagnetic Storm Warning in Effect
published: Sunday, October 15, 2017 12:27 UTC

A G2 (Moderate) geomagnetic storm warning has been issued until 09:00 UTC on 15 October due to continued effects from a coronal hole high speed stream.