G4 (Severe) Geomagnetic Storm Watch for January 19-20 from Recent CME
An official bulletin from the Space Weather Prediction Center National Oceanic and Atmospheric Administration, states that a G4 (Severe) geomagnetic…
CME Continues G3-G4 Geomagnetic Storm Possible Tonight, June 1st
A G4 (Severe) geomagnetic storm space weather alert from the Space Weather Prediction Center National Oceanic and Atmospheric Administration is…