SFI = 113
A index = 31
K index = 4
SSN = 63
SURPRISE GEOMAGNETIC STORM: A solar wind stream hit Earth’s magnetic field on August 7th. At first, the stream’s velocity was low, but during the day it sped up to more than 600 km/s, ultimately triggering a G2-class (moderately strong) geomagnetic storm. This event was not in the forecast, so the resulting auroras came as a surprise.
NOAA Alerts
Space Weather Message Code: ALTEF3
Serial Number: 3217
Issue Time: 2022 Aug 09 0822 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3216
Begin Time: 2022 Aug 08 1645 UTC
Yesterday Maximum 2MeV Flux: 2522 pfu
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.