Viewing archive of Tuesday, 8 April 2003

Geophysical report

Solar and Geophysical Activity Summary 2003 Apr 08 0245 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 098 Issued at 0245Z on 08 Apr 2003 This report is compiled from data received at SWO on 07 Apr
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0245 0304 0316  0234        C2.6     140
1927 1927 1927                       140
B. Proton Events
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet to unsettled levels. Greater than 2 MeV electrons at geo-synchronous orbit reached high levels today.
D. Stratwarm
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 116  SSN 077  Afr/Ap 006/006   X-ray Background B2.6
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 7.9e+05   GT 10 MeV 2.3e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 9.00e+07 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 2 2 2 2 2 1 2 Planetary 2 1 1 2 3 3 1 1
F. Comments
  Beginning 1500 UTC April 8, SEC will begin using data
from the GOES 12 satellite, and stop receiving GOES 8 data. GOES 12
has the new Solar X-Ray Imager (SXI), which will acquire real-time,
operational images of the solar x-ray flux. With the switch from
GOES 8 to GOES 12, the primary/secondary designations will change.
GOES 12 will be the primary satellite for the SXI. All other data,
including magnetometer, XRS x-ray measurements, and energetic
particles, will have GOES 10 as their primary source, with GOES 12
as the secondary source where available. Please see for important information on this

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