:Product: 19980601RSGA.txt :Issued: 1998 Jun 01 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 152 ISSUED AT 2200Z ON 01 JUN 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 31/2100Z TO 01/2100Z: SOLAR ACTIVITY WAS VERY LOW. THE TWO MAIN REGIONS: 8227 (N21W21) AND 8230 (S20E35) SHOWED VERY LITTLE CHANGE OR ACTIVITY DURING THE DAY. BOTH REGIONS HAVE "DSO-BETA" SPOT GROUPS. REGION 8227 PRODUCED A SF AT 01/0700Z WITH NO CORRELATED X-RAY ACTIVITY. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW. ISOLATED C-CLASS FLARES ARE POSSIBLE FROM REGIONS 8227 AND 8230. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 31/2100Z TO 01/2100Z: GEOMAGNETIC ACTIVITY WAS QUIET. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT EXCEEDED THRESHOLD LEVEL OF 1000PFU AT 01/1530Z AND HAS REMAINED ELEVATED FOR THE REST OF THE REPORTING PERIOD. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET. III. EVENT PROBABILITIES 02 JUN-04 JUN CLASS M 10/15/15 CLASS X 01/01/01 PROTON 01/01/01 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 01 JUN 100 PREDICTED 02 JUN-04 JUN 098/098/100 90 DAY MEAN 01 JUN 108 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 31 MAY 004/007 ESTIMATED AFR/AP 01 JUN 005/007 PREDICTED AFR/AP 02 JUN-04 JUN 005/008-007/008-007/008 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 02 JUN-04 JUN A. MIDDLE LATITUDES ACTIVE 05/05/05 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01 B. HIGH LATITUDES ACTIVE 05/05/10 MINOR STORM 05/05/05 MAJOR-SEVERE STORM 01/01/01