:Product: 19981116RSGA.txt :Issued: 1998 Nov 16 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 320 ISSUED AT 2200Z ON 16 NOV 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 15/2100Z TO 16/2100Z: SOLAR ACTIVITY WAS LOW. REGION 8383 (S15W24) PRODUCED SEVERAL C-CLASS X-RAY FLARES. REGION 8385, JUST PAST THE WEST LIMB, PRODUCED A C7 X-RAY FLARE AND AN ACTIVE SURGE REGION WITH AN EXTENT OF .12 RV. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 15/2100Z TO 16/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GT 10 MEV PROTON EVENT ENDED AT 16/0955Z WITH A MAXIUM OF 300 PFU OBSERVED AT 14/1245Z. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED FOR THE NEXT THREE DAYS, WITH MINOR STORM CONDITIONS POSSIBLE AT HIGH LATITUDES THE SECOND AND THIRD DAY DUE TO A RECURRENT PATTERN OF A NORTHERN POLAR CORONAL HOLE. III. EVENT PROBABILITIES 17 NOV-19 NOV CLASS M 10/10/10 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 16 NOV 125 PREDICTED 17 NOV-19 NOV 120/120/115 90 DAY MEAN 16 NOV 132 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 15 NOV 005/010 ESTIMATED AFR/AP 16 NOV 008/009 PREDICTED AFR/AP 17 NOV-19 NOV 010/012-015/030-015/045 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 17 NOV-19 NOV A. MIDDLE LATITUDES ACTIVE 15/25/25 MINOR STORM 05/15/15 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 25/35/35 MINOR STORM 10/15/15 MAJOR-SEVERE STORM 01/05/05