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National Oceanic and Atmospheric Administration

Sunday, June 29, 2025 19:40:24 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

G1 (Minor) Warning in effect through 23/0600 UTC

G1 Warning Auroral Oval Forecast
G1 (Minor) Warning in effect through 23/0600 UTC
published: Wednesday, November 23, 2016 06:05 UTC

G1 (Minor) geomagnetic storm warning now in effect through 23/0600 UTC (23/0100 ET) due to elevated solar wind speeds from anticipated coronal hole high speed stream (CH HSS) influences. The solar wind environment has turned favorable for escalated levels of geomagnetic response to the G1 level. Keep checking our SWPC webpage for the most recent forecasts, alerts and warnings.