Viewing archive of Tuesday, 23 October 2001

Geophysical report

Solar and Geophysical Activity Summary 2001 Oct 23 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 296 Issued at 0245Z on 23 Oct 2001 This report is compiled from data received at SWO on 22 Oct
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0022 0040 0048  9658 N17W57 M1.0  Sf 58
1314 1315 1315                       130
1427 1508 1531  9672 S21E18 M6.7  2n 230    380    II/IV
1728 1728 1729                       330
1744 1759 1814  9672 S18E16 X1.2  2b 1600   790    II
1947 1951 1953                       710
2001 2001 2001                       230
2142 2142 2142                       100
2152 2153 2153                       660
B. Proton Events
The greater than 10 MeV proton flux at geosynchronous orbit exceeded threshold at 22/1910 UTC. At the time of issue of this bulletin the 10 MeV proton flux was at 16 pfu.
C. Geomagnetic Activity Summary
The geomagnetic field was at minor to major storm levels. The second CME passage that had been expected today appears to have been incorporated into the first creating minor to major storm conditions for the entire period aside from a couple isolated severe storm conditions at some stations.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 233  SSN 207  Afr/Ap 053/066   X-ray Background C1.3
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 7.1e+06   GT 10 MeV 3.1e+05 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 3.10e+05 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 6 5 3 6 5 5 6 4 Planetary 6 5 4 6 5 7 6 5
F. Comments
  Afr based on Boulder A-Indices

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