:Product: 19970415RSGA.txt :Issued: 1997 Apr 15 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 105 ISSUED AT 2200Z ON 15 APR 1997 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 14/2100Z TO 15/2100Z: SOLAR ACTIVITY WAS LOW. REGION 8032 (S22E06) CONTINUED TO GROW AND PRODUCED A C1/1N FLARE WITH AN ASSOCIATED TYPE II SWEEP. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. REGION 8032 IS EXPECTED TO PRODUCE OCCASSIONAL C-CLASS FLARES. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 14/2100Z TO 15/2100Z: THE GOEMAGNETIC FIELD WAS QUIET. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET FOR THE NEXT TWO DAYS AND UNSETTLED ON DAY THREE. III. EVENT PROBABILITIES 16 APR-18 APR CLASS M 10/10/05 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 15 APR 079 PREDICTED 16 APR-18 APR 080/080/078 90 DAY MEAN 15 APR 074 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 14 APR 005/004 ESTIMATED AFR/AP 15 APR 003/005 PREDICTED AFR/AP 16 APR-18 APR 005/005-005/008-010/015 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 16 APR-18 APR A. MIDDLE LATITUDES ACTIVE 10/10/15 MINOR STORM 10/10/10 MAJOR-SEVERE STORM 05/05/05 B. HIGH LATITUDES ACTIVE 15/15/20 MINOR STORM 10/10/10 MAJOR-SEVERE STORM 05/05/05