Viewing archive of Monday, 28 April 2003

Geophysical report

Solar and Geophysical Activity Summary 2003 Apr 28 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 118 Issued at 0245Z on 28 Apr 2003 This report is compiled from data received at SWO on 27 Apr
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0042 0042 0042                       180
0050 0101 0121  0338 N21W67 C9.3  2f 690
0053 0053 0053                       640
0106 0108 0108                       160
0737 0740 0743  0338        C8.1     1900
1527 1532 1535  0338 N21W85 M1.7  Sf 1600   65
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet to active levels. An increase of 150 km/s in the solar wind speed during the period is believed to be the result of a recurrent coronal hole. The greater than 2 MeV electron fluxes at geosynchronous orbit reached high levels again today.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 154  SSN 200  Afr/Ap 015/015   X-ray Background B7.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.3e+06   GT 10 MeV 4.0e+04 p/(cm2-ster-day)
(GOES-10 satellite synchronous orbit W135 degrees)
Daily Electron Fluence
GT 2 MeV 3.90e+08 e/(cm2-ster-day)
(GOES-10 satellite synchronous orbit W135 degrees)
3 Hour K-indices
Boulder 3 4 2 1 3 4 3 3 Planetary 3 4 3 3 3 4 3 3
F. Comments
  None

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