:Product: 19970722RSGA.txt :Issued: 1997 Jul 22 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 203 ISSUED AT 2200Z ON 22 JUL 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 21/2100Z TO 22/2100Z: SOLAR ACTIVITY HAS BEEN VERY LOW FOR THE PAST 24 HOURS. NEW REGION 8064 (N22E70) ROTATED OVER THE EAST LIMB. A SMALL FILAMENT DISAPPEARED BETWEEN 22/1850-1900 FROM N32W05. A SPOT MAY BE REFORMING IN PLAGE REGION 8062 (N23E00). SURGING WAS REPORTED NEAR SW28 EARLY IN THE UT DAY. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 21/2100Z TO 22/2100Z: THE GEOMAGNETIC FIELD WAS QUIET FOR THE PAST 24 HOURS. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO PERSIST AT QUIET LEVELS AT MIDDLE AND LOW LATITUDES THROUGHOUT THE FORECAST PERIOD, WITH THE POSSIBILITY OF UNSETTLED CONDITIONS AT HIGH LATITUDES. III. EVENT PROBABILITIES 23 JUL-25 JUL CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 22 JUL 072 PREDICTED 23 JUL-25 JUL 072/072/072 90 DAY MEAN 22 JUL 072 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 21 JUL 007/005 ESTIMATED AFR/AP 22 JUL 005/008 PREDICTED AFR/AP 23 JUL-25 JUL 005/008-005/012-005/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 23 JUL-25 JUL A. MIDDLE LATITUDES ACTIVE 05/10/05 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 05/15/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01