NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, June 12, 2025 23:01:40 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
G1 Minor Storm levels reached Sunday, March 3, 2024 - 16:20
POSTPONED Network Maintenance: 22 May 2024 Wednesday, February 28, 2024 - 19:30
Changes to Sunspot Group 3590 Sunspot Region 3590 Evolution from February 19-27th Tuesday, February 27, 2024 - 16:39
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

Pages