:Product: 19960727RSGA.txt :Issued: 1996 Jul 27 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 209 ISSUED AT 2200Z ON 27 JUL 1996 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 26/2100Z TO 27/2100Z: SOLAR ACTIVITY WAS VERY LOW. NEWLY ASSIGNED REGION 7981 (S12E70) IS THE LIKELY RETURN OF THE SUNSPOT GROUP THAT PRODUCED AN X-CLASS FLARE ON 09 JULY. A FEW MATURE SPOTS AND AN ASSOCIATED ACTIVE PROMINENCE ARE VISIBLE THERE. LIMB PROXIMITY PROHIBITS A BETTER ANALYSIS. REGION 7980 (N10W15) DECAYED TO A SPOTLESS PLAGE. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. AN ISOLATED C-CLASS FLARE MAY OCCUR IN REGION 7981 AT SOME POINT OVER THE NEXT THREE DAYS. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 26/2100Z TO 27/2100Z: THE GEOMAGNETIC FIELD WAS QUIET. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET. III. EVENT PROBABILITIES 28 JUL-30 JUL CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 27 JUL 073 PREDICTED 28 JUL-30 JUL 075/075/077 90 DAY MEAN 27 JUL 070 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 26 JUL 007/005 ESTIMATED AFR/AP 27 JUL 007/006 PREDICTED AFR/AP 28 JUL-30 JUL 005/006-005/006-005/006 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 28 JUL-30 JUL A. MIDDLE LATITUDES ACTIVE 05/05/05 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 05/05/05 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01