R2 (Moderate) Radio Blackout Observed
published: Wednesday, December 31, 2025 15:07 UTC
An M7.1 flare (R2 -Moderate) occurred at 13:51 UTC on 31 Dec 2025 from Sunspot Region 4324.
R1 (Minor) Radio Blackout Impacts
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
Navigation: Low-frequency navigation signals degraded for brief intervals.