NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, July 26, 2025 20:14:28 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
R1-R2 Events Remain Likely 4-6 November R1-R2 Events Remain Likely 4-6 November Monday, November 4, 2024 - 20:10
Solar Flare Probabilities Remain Elevated 4-6 November Monday, November 4, 2024 - 15:49
R3 (Strong) Radio Blackout Event Thursday, October 31, 2024 - 22:45
R3 Strong radio blackout/GOES SUVI imagery Another R3 (Strong) Flare Eruption Saturday, October 26, 2024 - 07:50
R3 (Strong) HF Radio Blackout Observed Thursday, October 24, 2024 - 04:25

Pages