NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, May 22, 2025 23:30:29 UTC

Main menu

NOAA Scales mini

R1 (Minor) Radio Blackout Impacts
close
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
2025 GNSS User Engagement 2025 GNSS User Engagement Monday, May 19, 2025 - 20:00
14 May X flare R3 flare activity from Region 4087 Wednesday, May 14, 2025 - 09:18
X1.2 Flare 13 May Tuesday, May 13, 2025 - 16:46
Artemis II Testbed Event at SWPC Thursday, May 1, 2025 - 13:18
New NCEI Space Weather Portfolio of Archived Products Tuesday, April 29, 2025 - 22:37

Pages