G3 - Strong Geomagnetic Storm Levels Observed
Geomagnetic activity reached G3 (Strong) storm levels at 1446 UTC on 12 Sep due to CME effects. Stay tuned to https://www.swpc.noaa.gov for updates.
NOAA Scales mini
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.
G3 - Strong Geomagnetic Storm Levels Observed