:Product: 19991009RSGA.txt :Issued: 1999 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 1999 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 08/2100Z TO 09/2100Z: SOLAR ACTIVITY WAS LOW. NEW REGION 8729 (N11E67) WAS NUMBERED. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO REMAIN LOW THROUGH THE PERIOD. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 08/2100Z TO 09/2100Z: THE GEOMAGNETIC FIELD WAS QUIET THROUGH THE PERIOD. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED TO ACTIVE THROUGH THE PERIOD. THESE CONDITIONS ARE EXPECTED IN RESPONSE TO RECURRENT CORONAL HOLE EFFECTS. III. EVENT PROBABILITIES 10 OCT-12 OCT CLASS M 20/20/20 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 09 OCT 153 PREDICTED 10 OCT-12 OCT 155/158/160 90 DAY MEAN 09 OCT 154 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 08 OCT 008/008 ESTIMATED AFR/AP 09 OCT 005/007 PREDICTED AFR/AP 10 OCT-12 OCT 020/020-020/020-020/025 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 10 OCT-12 OCT A. MIDDLE LATITUDES ACTIVE 30/30/30 MINOR STORM 15/15/15 MAJOR-SEVERE STORM 05/05/05 B. HIGH LATITUDES ACTIVE 30/30/35 MINOR STORM 15/15/20 MAJOR-SEVERE STORM 05/05/10