SFI = 105 A index = 20 K index = 3 SSN = 74
A CME JUST HIT EARTH: A coronal mass ejection (CME) hit Earth’s magnetic field on Aug. 20th at approximately 1800 UT. This is the first of two CMEs (#1, #2) expected to arrive in the Aug. 20-21 time frame. Minor G1-class geomagnetic storms are possible in the hours ahead, possibly intensifying to category G2 when the second CME arrives.
this sinuous coronal hole. Credit: SDO/AIA
Geomagnetic Storms:
Probabilities for significant disturbances in Earth’s magnetic field are given for three activity levels: active, minor storm, severe storm
 Updated at: 2022 Aug 20 2200 UTC |