:Product: 19980607RSGA.txt :Issued: 1998 Jun 07 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 158 ISSUED AT 2200Z ON 07 JUN 1998 IA. ANALYSIS OF SOLAR ACTIVE REGIONS AND ACTIVITY FROM 06/2100Z TO 07/2100Z: SOLAR ACTIVITY WAS LOW. ALL REGIONS APPEAR STABLE OR DECLINING. A SMALL C FLARE WAS OBSERVED AT 1443UT FROM REGION 8232 (S20E09). REGION 8237 (S25E69) HAS ROTATED OVER THE EAST LIMB AS A SMALL BXO SPOT GROUP. A TYPE II SWEEP WAS REPORTED AT 0912UT. IB. SOLAR ACTIVITY FORECAST: SOLAR ACTIVITY IS EXPECTED TO BE LOW. ISOLATED CLASS C FLARES ARE EXPECTED, PRIMARILY FROM REGION 8232. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 06/2100Z TO 07/2100Z: THE GEOMAGNETIC FIELD WAS GENERALLY UNSETTLED TO ACTIVE. SOME MINOR STORMING AT HIGH LATITUDES OCCURRED EARLY IN THE UT DAY. IIB. GEOPHYSICAL ACTIVITY FORECAST: THE GEOMAGNETIC FIELD IS EXPECTED TO BE AT UNSETTLED TO ACTIVE LEVELS. III. EVENT PROBABILITIES 08 JUN-10 JUN CLASS M 20/20/20 CLASS X 05/05/05 PROTON 01/01/05 PCAF GREEN IV. PENTICTON 10.7 CM FLUX OBSERVED 07 JUN 113 PREDICTED 08 JUN-10 JUN 115/118/119 90 DAY MEAN 07 JUN 110 V. GEOMAGNETIC A INDICES OBSERVED AFR/AP 06 JUN 015/014 ESTIMATED AFR/AP 07 JUN 012/014 PREDICTED AFR/AP 08 JUN-10 JUN 010/010-018/018-012/015 VI. GEOMAGNETIC ACTIVITY PROBABILITIES 08 JUN-10 JUN A. MIDDLE LATITUDES ACTIVE 20/30/30 MINOR STORM 10/15/10 MAJOR-SEVERE STORM 05/06/06 B. HIGH LATITUDES ACTIVE 30/30/30 MINOR STORM 10/15/15 MAJOR-SEVERE STORM 05/06/06