:Product: 19961023RSGA.txt :Issued: 1996 Oct 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 297 ISSUED AT 2200Z ON 23 OCT 1996 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 22/2100Z TO 23/2100Z: SOLAR ACTIVITY WAS VERY LOW. THERE ARE NO SPOTTED REGIONS CURRENTLY ON THE DISK. NO FLARES OCCURRED. 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 RANGED FROM QUIET TO SEVERE STORM. THE MOST DISTURBED PERIOD OCCURRED FROM 23/00-03Z. SOLAR WIND INFORMATION FROM THE NASA WIND SPACECRAFT SUGGESTS THAT WE ARE UNDER THE INFLUENCE OF A RECURRENT HIGH SPEED STREAM RELATED TO AN EQUATORIAL CORONAL HOLE. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY UNSETTLED TO ACTIVE WITH POSSIBLE STORM CONDITIONS DURING LOCAL NIGHTTIME. III. EVENT PROBABILITIES 24 OCT-26 OCT CLASS M 01/01/01 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 23 OCT 068 PREDICTED 24 OCT-26 OCT 068/068/068 90 DAY MEAN 23 OCT 071 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 22 OCT 025/028 ESTIMATED AFR/AP 23 OCT 030/041 PREDICTED AFR/AP 24 OCT-26 OCT 020/030-020/015-015/030 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 24 OCT-26 OCT A. MIDDLE LATITUDES ACTIVE 30/30/35 MINOR STORM 20/20/20 MAJOR-SEVERE STORM 10/10/05 B. HIGH LATITUDES ACTIVE 30/30/30 MINOR STORM 20/20/25 MAJOR-SEVERE STORM 10/10/10