Viewing archive of Saturday, 17 September 2005

Geophysical report

Solar and Geophysical Activity Summary 2005 Sep 17 0248 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 260 Issued at 0245Z on 17 Sep 2005 This report is compiled from data received at SWO on 16 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0141 0149 0156  0808 S13W26 M4.4  1b        220                    
 0450 0000 1638                                        IV           
 1735 1748 1810  0808 S11W33 M1.3  Sf        26                     
 1918 1936 1948  0808 S11W37 M3.5  1f        100                    
 2238 0000 1002                                        IV           
B. Proton Events
The greater than 10 MeV proton event that began at 08/0215 UTC and reached a maximum of 1880 pfu at 11/0425 UTC ended at 16/0025 UTC.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet to active levels. Active levels were the result of the high solar wind speeds early in the UTC day. The solar wind speed declined over the past 24 hours from about 700 km/s to about 575 km/s.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 112  SSN 051  Afr/Ap 015/018   X-ray Background B3.3
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.5e+07   GT 10 MeV 4.1e+05 p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W113 degrees)
Daily Electron Fluence
GT 2 MeV 1.20e+09 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W74 degrees)
3 Hour K-indices
Boulder 4 4 3 4 3 1 2 2 Planetary 4 4 3 4 3 2 3 2 
F. Comments
  The greater than 2 MeV electron fluence at
geosynchronous orbit was very high today.

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