Viewing archive of Saturday, 21 June 2003

Geophysical report

Solar and Geophysical Activity Summary 2003 Jun 21 0245 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 172 Issued at 0245Z on 21 Jun 2003 This report is compiled from data received at SWO on 20 Jun
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1235 1235 1236                       110
B. Proton Events
C. Geomagnetic Activity Summary
The geomagnetic field was at predominantly unsettled levels today as effects from the western most recurrent coronal hole wanes. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today.
D. Stratwarm
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 117  SSN 121  Afr/Ap 014/012   X-ray Background B2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV MSG   GT 10 MeV MSG p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W113 degrees)
Daily Electron Fluence
GT 2 MeV MSG e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 2 3 3 3 4 3 2 Planetary 3 2 3 3 3 3 3 3
F. Comments
On 16 June, it was determined that a scaling problem exists with the Boulder magnetometer instrument.  While this problem, and its fix are being investigated the primary instrument for Boulder K-indices has been switched to the Boulder USGS (via Domsat) magnetometer, effective 1500 UTC on 16 June.

GOES Protons:
To ensure continued operational monitoring of important energetic particle data, it is necessary to reassign primary/secondary designations for the GOES Space Environment Monitor (SEM) detectors. GOES 11 (113W) is now the primary satellite for protons. GOES 12 will continue as the primary satellite for magnetometer, X-ray, and electron measurements. GOES 10 (135W) will be the secondary satellite for all SEM sensors - magnetometer, X-ray, and energetic particles.  Because of the degraded state of the proton data on GOES-10, its designation as the secondary source for proton data is a short-term solution.  More permanent solutions have been identified and are being evaluated.  Users will be notified when we define and schedule a permanent fix.  Further details can be found at

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