:Product: 20020222SGAS.txt :Issued: 2002 Feb 22 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 053 Issued at 0245Z on 22 Feb 2002 This report is compiled from data received at SWO on 21 Feb A. Energetic Events Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1156 1226 1236 9825 N13W90 M3.9 1807 1823 1844 9825 N13W90 M1.0 2028 2037 2047 9825 N13W90 M1.4 28 2349 0010 0027 9830 S16W27 M4.4 2n B. Proton Events: The greater than 10 MeV protons at geosynchronous orbit remain elevated following the small proton event that began and ended between 20/0730 - 0800Z. C. Geomagnetic Activity Summary: The geomagnetic field was quiet to unsettled. D. Stratwarm: STRATWARM ALERT EXISTS STRATWARM THURSDAY THE CIRCULATION IS STILL RELAXING AFTER THE MAJOR WARMING. THERE EXISTS A REVERSED TEMPERATURE GRADIENT FROM 50 HPA AT 60N AND ZONAL MEAN EASTERLY WINDS FROM 5 HPA TO 1 HPA. E. Daily Indices: (real-time preliminary/estimated values) 10 cm 201 SSN 148 Afr/Ap 008/006 X-ray Background C1.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.3e+06 GT 10 MeV 4.8e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.40e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices: Boulder 1 1 2 2 3 2 3 3 Planetary 1 1 2 1 2 2 3 3 F. Comments: None