:Product: 19990306SGAS.txt :Issued: 1999 Mar 06 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 065 ISSUED AT 0245Z ON 06 MAR 1999 THIS REPORT IS COMPILED FROM DATA RECEIVED AT SWO ON 05 MAR A. ENERGETIC EVENTS BEGIN MAX END RGN LOC XRAY OP 245MHZ 10CM SWEEP 1200 1203 1208 170 1834 1837 1844 8478 S15W66 SF 110 1912 1913 1913 100 B. PROTON EVENTS: NONE. C. GEOMAGNETIC ACTIVITY SUMMARY: THE GEOMAGNETIC FIELD RANGED FROM QUIET TO MINOR STORM LEVELS. THIS ACTIVITY WAS BASED ON THE CONTINUED AFFECTS OF AN ELONGATED CORONAL HOLE STREAM IMPACTING THE EARTH. THE GREATER THAN 2 MEV ELECTRONS AT GEOSYNCHRONOUS ORBIT REACHED HIGH LEVELS AT APPROXIMATELY 05/0900Z. D. STRATWARM: STRATWARM ALERT/FRIDAY/STRATWARM EXISTS. FINAL WARMING CONTINUES. TEMPERATURE GRADIENT REVERSED BETWEEN 60N AND THE POLE IN THE LOWER AND MIDDLE STRATOSPHERE, AND MEAN ZONAL WIND AT 60N FROM THE EAST AT 30 AND 10 HPA. TRANSMISSION TO SUMMER CONDITIONS WILL PROCEED WITHIN THE NEXT WEEKS. END OF GEOALERT MESSAGES OF THIS WINTER SEASON. E. DAILY INDICES: (REAL-TIME PRELIMINARY/ESTIMATED VALUES) 10 CM 128 SSN 135 AFR/AP 020/018 X-RAY BACKGROUND B4.6 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 6.6E+05 GT 10 MEV 1.5E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.10E+08 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 5 3 4 3 3 3 2 1 PLANETARY 4 3 5 3 3 4 2 2 F. COMMENTS: NONE.