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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, June 21, 2025 12:43:07 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

News Archive

Previous SWPC news items.

News Archive

Originally Posted
Short Term Aurora Forecast Short Term Aurora Forecast Tuesday, August 16, 2022 - 22:42
WSA-Enlil model output image Model Results for Current Space Weather Activity Tuesday, August 16, 2022 - 22:15
G1-G3 Watches for 17-19 August, 2022 Tuesday, August 16, 2022 - 19:28
16 August, 2022 Sunspots 16 August 2022 Sunspots Tuesday, August 16, 2022 - 16:29
G1-G2 Storm Watches 17-18 Aug, 2022 G1-G2 (Minor-Moderate) Storm Watches for 17-18 August Monday, August 15, 2022 - 18:49

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