:Product: 20000212SGAS.txt :Issued: 2000 Feb 12 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 043 ISSUED AT 0245Z ON 12 FEB 2000 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 11 FEB A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP NONE B. PROTON EVENTS: NONE C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED UNTIL 11/0301UT WHEN A SUDDEN IMPULSE WAS OBSERVED ON THE BOULDER MAGNETOMETER. ACTIVE CONDITIONS FOLLOWED DURING THE 11/0300-0600UT PERIOD. QUIET TO UNSETTLED CONDITIONS PREVAILED FROM 11/0600Z UNTIL A SECOND SI WAS OBSERVED AT 11/2353Z. ACTIVE CONDITIONS FOLLOWED THE SECOND SHOCK. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT WAS MODERATE TO HIGH. D. STRATWARM: STRATWARM ALERT/FRIDAY/STRATWARM EXISTS. INTENSE WARMING, CENTRED OVER THE HUDSON BAY AT 10HPA, CONTINUES. TEMPERATURE GRADIENT REVERSED BETWEEN 60N AND THE POLE AT 5HPA AND ABOVE. E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 170 SSN 184 AFR/AP 013/013 X-RAY BACKGROUND B7.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 5.7E+06 GT 10 MEV 1.7E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 4.70E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 3 4 2 3 3 2 2 3 PLANETARY 3 4 2 3 3 3 3 3 F. COMMENTS: NONE