:Product: 19970719RSGA.txt :Issued: 1997 Jul 19 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 200 ISSUED AT 2200Z ON 19 JUL 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 18/2100Z TO 19/2100Z: SOLAR ACTIVITY WAS VERY LOW. A SINGLE, LONG-DURATION A9 XRAY BURST PEAKED AT ABOUT 19/1650Z, BUT HAD NO ASSOCIATED OPTICAL REPORTS. REGION 8062 (N23E39) IS NOW SPOTLESS, AS IS THE REMAINDER OF THE VISIBLE DISK. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 18/2100Z TO 19/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED AT ALL LATITUDES. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET FOR THE ENTIRE FORECAST PERIOD. III. EVENT PROBABILITIES 20 JUL-22 JUL CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 19 JUL 071 PREDICTED 20 JUL-22 JUL 072/072/072 90 DAY MEAN 19 JUL 072 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 18 JUL 011/010 ESTIMATED AFR/AP 19 JUL 009/009 PREDICTED AFR/AP 20 JUL-22 JUL 005/008-005/008-005/008 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 20 JUL-22 JUL A. MIDDLE LATITUDES ACTIVE 10/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 10/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01