:Product: 20030617SGAS.txt :Issued: 2003 Jun 17 0245 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Solar and Geophysical Activity Summary SGAS Number 168 Issued at 0245Z on 17 Jun 2003 This report is compiled from data received at SWO on 16 Jun A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1152 1200 1204 0386 S12E83 M1.7 Sf B. Proton Events: None C. Geomagnetic Activity Summary: The geomagnetic field was at unsettled to minor storm levels. The source of the minor storm conditions may be associated with the Boulder magnetometer scaling problem (see comment in VII). Solar wind speed was in gradual decay from a peak near 600 km/s early in the day to a minimum of 450 km/s by 1600UTC. Wind speed then increased to 550 km/s by the end of the day. D. Stratwarm: None E. Daily Indices: (real-time preliminary/estimated values) 10 cm 123 SSN 091 Afr/Ap 038/032 X-ray Background B3.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.8e+06 GT 10 MeV 1.7e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W126 degrees) Daily Electron Fluence GT 2 MeV 6.90e+06 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W76 degrees) 3 Hour K-indices: Boulder 5 5 3 5 4 4 3 6 Planetary 4 5 2 5 4 3 5 6 F. Comments: On 16 June, it was determined that a scaling problem exists with the H-trace on 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.