R3 (Strong) Radio Blackout Observed
published: Saturday, July 4, 2026 21:53 UTC
An R3 (Strong) Radio Blackout was observed when newly numbered Sunspot Region 4482 produced and X1.3 flare at 20:41 UTC on 04 Jul 2026.
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.