:Product: 0622RSGA.txt :Issued: 2008 Jun 22 2203 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 174 Issued at 2200Z on 22 Jun 2008 IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity was at very low levels. No flares were observed during the period. IB. Solar Activity Forecast: Solar activity is expected to remain at very low levels. IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field was quiet. Solar wind velocities gradually decayed from a peak of about 500 km/s at the beginning of the period to near 400 km/s at forecast issue time. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at mostly quiet levels for days one and two (23 and 24 June). Activity is expected to increase to quiet to unsettled conditions on day three (25 June) due to a recurrent coronal hole high speed stream that will rotate into a geoeffective position. III. Event Probabilities 23 Jun-25 Jun Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 22 Jun 065 Predicted 23 Jun-25 Jun 065/065/065 90 Day Mean 22 Jun 070 V. Geomagnetic A Indices Observed Afr/Ap 21 Jun 004/005 Estimated Afr/Ap 22 Jun 005/005 Predicted Afr/Ap 23 Jun-25 Jun 005/005-005/005-008/008 VI. Geomagnetic Activity Probabilities 23 Jun-25 Jun A. Middle Latitudes Active 10/10/15 Minor storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/25 Minor storm 01/01/05 Major-severe storm 01/01/05