:Product: 0705RSGA.txt :Issued: 2006 Jul 05 2203 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 186 Issued at 2200Z on 05 Jul 2006 IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity was low. Region 898 (S08W28) produced one C-class event, a C1 at 05/0858Z. Region 898 has grown slightly but has remained unchanged in magnetic complexity. A new region, 899 (S05E69), rotated into view today. A slow, narrow CME was observed in LASCO/C2 on the southwest limb, beginning at 04/2354Z. IB. Solar Activity Forecast: Solar activity is expected to be low for the next three days (06-08 July). IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field ranged from quiet to minor storm levels during the past 24 hours. Active to minor storm conditions prevailed from 04/2100Z to 05/0900Z. Conditions have been quiet to unsettled since then. The enhanced activity is due to the presence of a high speed coronal hole stream. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be unsettled to active during the next 24 hours (06 July) due to the continuing effects of the high speed coronal hole stream. As the coronal hole stream rotates past its geoeffective location, geomagnetic activity should decline to quiet for the last two days of the forecast period (July 07-08). No effects are expected from today's CME. III. Event Probabilities 06 Jul-08 Jul Class M 10/10/10 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 05 Jul 085 Predicted 06 Jul-08 Jul 085/085/085 90 Day Mean 05 Jul 081 V. Geomagnetic A Indices Observed Afr/Ap 04 Jul 011/013 Estimated Afr/Ap 05 Jul 018/020 Predicted Afr/Ap 06 Jul-08 Jul 010/015-007/008-005/005 VI. Geomagnetic Activity Probabilities 06 Jul-08 Jul A. Middle Latitudes Active 25/20/20 Minor storm 15/10/05 Major-severe storm 05/05/05 B. High Latitudes Active 25/20/20 Minor storm 15/10/05 Major-severe storm 05/05/05