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National Oceanic and Atmospheric Administration

Friday, April 11, 2025 11:20:09 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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G2 (Moderate) Geomagnetic Storm Warning issued

G2 Moderate storm warning/Ovation aurora oval
G2 (Moderate) Geomagnetic Storm Warning issued
published: Wednesday, November 08, 2017 11:22 UTC

A G2-Moderate geomagnetic Storm Warning was issued, valid from 07/2305 UTC- 08/0600 UTC in response to enhanced geomagnetic activity associated with the positive polarity coronal hole.

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