G3 (Strong) Geomagnetic Storming Expected 30 Sep
published: Tuesday, September 30, 2025 04:44 UTC
G3 (Strong) geomagnetic storming is expected through 30/1200 UTC due to CME influences.
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.