:Product: 20010627RSGA.txt :Issued: 2001 Jun 27 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 178 Issued at 2200Z on 27 Jun 2001 IA. Analysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: Solar activity was low. There were only a few minor C-class x-ray flares during the period, the largest being an optically uncorrelated C2. Regions 9518 (S48E45), 9519 (N17E23) and 9520 (S10E25) were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be predominantly low. IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z: The geomagnetic field ranged from quiet to active. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to active for the first two days of the period, becoming quiet to unsettled by day three. The effects of a recurrent coronal hole are forecast for the first two days of the period. III. Event Probabilities 28 Jun-30 Jun Class M 30/40/40 Class X 01/05/05 Proton 01/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 27 Jun 148 Predicted 28 Jun-30 Jun 145/145/140 90 Day Mean 27 Jun 170 V. Geomagnetic A Indices Observed Afr/Ap 26 Jun 011/013 Estimated Afr/Ap 27 Jun 009/011 Predicted Afr/Ap 28 Jun-30 Jun 012/020-015/020-010/015 VI. Geomagnetic Activity Probabilities 28 Jun-30 Jun A. Middle Latitudes Active 25/25/15 Minor storm 10/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 25/25/20 Minor storm 15/15/10 Major-severe storm 01/01/01