:Product: 19970621RSGA.txt :Issued: 1997 Jun 21 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # JOINT USAF/NOAA REPORT OF SOLAR AND GEOPHYSICAL ACTIVITY SDF NUMBER 172 ISSUED AT 2200Z ON 21 JUN 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 20/2100Z TO 21/2100Z: SOLAR ACTIVITY WAS VERY LOW. NO FLARES OCCURRED. REGION 8053 (S27W07), A SINGLE SPOT 'AXX' GROUP, IS CURRENTLY THE ONLY ACTIVE REGIOIN ON THE VISIBLE DISK. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 20/2100Z TO 21/2100Z: THE GEOMAGNETIC FIELD HAS BEEN QUIET AT ALL LATITUDES FOR THE PAST 24 HOURS. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET FOR THE NEXT 24 HOURS, WITH ACTIVITY INCREASING TO QUIET TO UNSETTLED ON DAYS TWO AND THREE. III. EVENT PROBABILITIES 22 JUN-24 JUN CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 21 JUN 068 PREDICTED 22 JUN-24 JUN 070/070/070 90 DAY MEAN 21 JUN 074 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 20 JUN 006/005 ESTIMATED AFR/AP 21 JUN 003/005 PREDICTED AFR/AP 22 JUN-24 JUN 005/005-008/008-005/012 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 22 JUN-24 JUN A. MIDDLE LATITUDES ACTIVE 10/20/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 15/20/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01