Viewing archive of Thursday, 18 September 2025

Geophysical report

Joint USAF/NOAA Solar and Geophysical Activity Summary

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0930 0930 0930                       170                           
 1128 1128 1128                       1000                          
 1136 1137 1140  4216 N10E03       Sf 320                           
 1213 1219 1221  4216 N10E03 C1.7  Sf 660                           
 1213 1214 1214                       360                           
 1523 1524 1539  4220 S17E05       Sf 940                           
 2057 2057 2057                       330                           
 2242 2247 2251  4220        C1.6     380                           
 2252 2252 2252                       180                           

B. Proton Events

C. Geomagnetic Activity Summary

D. Stratwarm

E. Daily Indices: (real-time preliminary/estimated values)

10 cm 147  SSN 119  Afr/Ap 010/012   X-ray Background B8.9
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.2e+06   GT 10 MeV 1.8e+04 p/(cm2-ster-day)
(GOES-18 satellite synchronous orbit W137 degrees)
Daily Electron Fluence
GT 2 MeV 1.80e+08 e/(cm2-ster-day)
(GOES-19 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 2 3 3 2 2 2 2 Planetary 2 3 3 3 2 1 2 3 

F. Comments

  None

All times in UTC

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