:Product: 19961223RSGA.txt :Issued: 1996 Dec 23 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 358 ISSUED AT 2200Z ON 23 DEC 1996 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 22/2100Z TO 23/2100Z: SOLAR ACTIVITY WAS VERY LOW. REGION 8008 (S04W10) CONTINUED TO PRODUCE SMALL SUBFLARES. NONE OF THEM WERE ASSOCIATED WITH SIGNIFICANT X-RAY OUTPUT. A SMALL FILAMENT ERUPTED NEAR (S14W67) BEGINNING AT 23/2016Z. THIS DSF WAS LOCATED NEAR REGION 8005 (S13W67) AND WAS ASSOCIATED WITH A B2/SF FLARE WHICH PEAKED AT 23/2053Z. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 22/2100Z TO 23/2100Z: THE GEOMAGNETIC FIELD WAS AT QUIET TO MINOR STORM LEVELS. MINOR STORM CONDITIONS WERE OBSERVED AT SOME LOCATIONS DURING THE 23/0000-0300Z PERIOD. THE FIELD HAS BEEN QUIET SINCE ABOUT 23/0900Z. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT DAY, BECOMING MOSTLY QUIET FOR THE REMAINDER OF THE FORECAST PERIOD. III. EVENT PROBABILITIES 24 DEC-26 DEC CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 23 DEC 080 PREDICTED 24 DEC-26 DEC 076/074/070 90 DAY MEAN 23 DEC 075 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 22 DEC 007/006 ESTIMATED AFR/AP 23 DEC 010/009 PREDICTED AFR/AP 24 DEC-26 DEC 005/008-005/005-005/005 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 24 DEC-26 DEC A. MIDDLE LATITUDES ACTIVE 10/05/05 MINOR STORM 05/01/01 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 15/10/10 MINOR STORM 10/05/05 MAJOR-SEVERE STORM 01/01/01