:Product: 20040609RSGA.txt :Issued: 2004 Jun 09 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 161 Issued at 2200Z on 09 Jun 2004 IA. Analysis of Solar Active Regions and Activity from 08/2100Z to 09/2100Z: Solar activity has been very low. No significant changes have been noted in current active regions on the sun. IB. Solar Activity Forecast: Solar activity is expected to remain very low. IIA. Geophysical Activity Summary 08/2100Z to 09/2100Z: The geomagnetic field has been at mostly unsettled levels with an isolated period of active on 9 June at 1200Z. The interplanetary magnetic field has been at slightly negative polarity for extended periods. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to remain mostly unsettled for the remainder of 9 June. The possible glancing blow from a coronal mass ejection may elevate the geomagnetic field to active levels with a very slight chance for isolated minor storming on 10 June, returning to quiet to active levels for 11 June. III. Event Probabilities 10 Jun-12 Jun Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 09 Jun 085 Predicted 10 Jun-12 Jun 090/095/095 90 Day Mean 09 Jun 103 V. Geomagnetic A Indices Observed Afr/Ap 08 Jun 006/009 Estimated Afr/Ap 09 Jun 012/012 Predicted Afr/Ap 10 Jun-12 Jun 012/020-012/015-010/012 VI. Geomagnetic Activity Probabilities 10 Jun-12 Jun A. Middle Latitudes Active 30/30/25 Minor storm 10/10/05 Major-severe storm 05/05/01 B. High Latitudes Active 40/35/30 Minor storm 15/15/15 Major-severe storm 10/05/05