Activity summary of the solar and geophysical activity

Below you'll find a daily report brought to you by the NOAA about the solar activity and geophysical activity during the past day and the prediction for the coming days. This page is daily updated around midnight.

Solar and Geophysical Activity Summary 2025 Dec 18 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 352 Issued at 0245Z on 18 Dec 2025 This report is compiled from data received at SWO on 17 Dec
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0227 0227 0227                       120                           
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field reached G1 (Minor) storming levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 119  SSN 068  Afr/Ap 010/018   X-ray Background B6.4
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 8.4e+05   GT 10 MeV 1.4e+04 p/(cm2-ster-day)
(GOES-18 satellite synchronous orbit W137 degrees)
Daily Electron Fluence
GT 2 MeV 4.00e+07 e/(cm2-ster-day)
(GOES-19 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 3 3 3 2 3 3 4 Planetary 3 3 3 2 3 3 4 5 
F. Comments
  None

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