G4 (Severe) Conditons Reached near 10:18am EDT on 28 June
Geomagnetic Storm conditions reached G4 (Severe) levels near 10:18am EDT.
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.
G4 (Severe) Conditons Reached near 10:18am EDT on 28 June