:Product: 20030614RSGA.txt :Issued: 2003 Jun 14 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 165 Issued at 2200Z on 14 Jun 2003 IA. Analysis of Solar Active Regions and Activity from 13/2100Z to 14/2100Z: Solar activity was at moderate levels. An M1.5 flare occurred at 0609Z on the southeast limb. Region 380 (S16W25) has decreased in area coverage and has simplified to a beta magnetic configuration. An eleven degree disappearing solar filament was observed lifting off at near N27W09 at 13/2217Z. IB. Solar Activity Forecast: Solar activity is expected to be low to moderate. The region from beyond the southeast limb is likely to rotate onto the visible disk on day one and have M-class potential. IIA. Geophysical Activity Summary 13/2100Z to 14/2100Z: The geomagnetic field was at active to major storm levels. The onset of the expected coronal hole was marked by a co-rotating interacting region with solar wind speed increasing to near 600 km/s and a 12 hour period of minor storm levels. Late in the period indications of a possible shock passage at the NASA/ACE spacecraft coincided with a major storm period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to minor storm levels. Isolated minor storm levels are expected on day one due to high speed flow and CME shock effects. By day two activity is expected to be at unsettled to active levels. III. Event Probabilities 15 Jun-17 Jun Class M 45/40/35 Class X 15/10/10 Proton 20/15/10 PCAF yellow IV. Penticton 10.7 cm Flux Observed 14 Jun 134 Predicted 15 Jun-17 Jun 135/135/130 90 Day Mean 14 Jun 124 V. Geomagnetic A Indices Observed Afr/Ap 13 Jun 008/011 Estimated Afr/Ap 14 Jun 035/035 Predicted Afr/Ap 15 Jun-17 Jun 020/025-015/015-012/015 VI. Geomagnetic Activity Probabilities 15 Jun-17 Jun A. Middle Latitudes Active 40/30/20 Minor storm 20/10/05 Major-severe storm 10/05/05 B. High Latitudes Active 45/40/30 Minor storm 20/20/15 Major-severe storm 10/10/05