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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Friday, June 13, 2025 14:12:02 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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News Archive

Previous SWPC news items.

News Archive

Originally Posted
R3 Strong Flare Event Strongest Flare of the Current Solar Cycle Thursday, February 22, 2024 - 23:07
Two Flares; Effects on Cellular Networks Unlikely Two Major Solar Flares; Effects on Cellular Networks Unlikely Thursday, February 22, 2024 - 17:23
21 & 22 Feb R3 Events Thursday, February 22, 2024 - 00:05
Are You Ready for the April 8 Total Solar Eclipse? Wednesday, February 21, 2024 - 20:18
X2.5 Flare from Region 3576 Friday, February 16, 2024 - 07:48

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