:Product: 19981009RSGA.txt :Issued: 1998 Oct 09 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 282 ISSUED AT 2200Z ON 09 OCT 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 08/2100Z TO 09/2100Z: SOLAR ACTIVITY WAS LOW. TWO C-CLASS EVENTS OCCURRED WHICH WERE NOT OPTICALLY CORRELATED, A C1 AT 09/0753Z AND A C1 AT 09/1005Z. REGION 8355 (S22E37) PRODUCED A C1/SF AT 09/1330Z. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW, HOWEVER THE REGIONS PRESENT ON THE VISIBLE DISK DO HAVE POTENTIAL TO PRODUCE ISOLATED M-CLASS EVENTS THROUGHOUT THE FORECAST PERIOD. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 08/2100Z TO 09/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE FORECAST PERIOD. III. EVENT PROBABILITIES 10 OCT-12 OCT CLASS M 15/15/15 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 09 OCT 124 PREDICTED 10 OCT-12 OCT 125/130/130 90 DAY MEAN 09 OCT 130 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 08 OCT 014/017 ESTIMATED AFR/AP 09 OCT 015/015 PREDICTED AFR/AP 10 OCT-12 OCT 005/010-005/010-005/010 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 10 OCT-12 OCT A. MIDDLE LATITUDES ACTIVE 10/10/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 15/15/15 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01