:Product: 0316RSGA.txt :Issued: 2014 Mar 16 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 75 Issued at 2200Z on 16 Mar 2014 IA. Analysis of Solar Active Regions and Activity from 15/2100Z to 16/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C7 event observed at 16/0645Z from Region 2003 (N05W91). There are currently 9 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares and a slight chance for an X-class flare on days one, two, and three (17 Mar, 18 Mar, 19 Mar). IIA. Geophysical Activity Summary 15/2100Z to 16/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 409 km/s at 15/2354Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (17 Mar) and quiet levels on days two and three (18 Mar, 19 Mar). III. Event probabilities 17 Mar-19 Mar Class M 50/50/50 Class X 10/10/10 Proton 05/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 16 Mar 136 Predicted 17 Mar-19 Mar 135/135/135 90 Day Mean 16 Mar 158 V. Geomagnetic A Indices Observed Afr/Ap 15 Mar 026/003 Estimated Afr/Ap 16 Mar 003/004 Predicted Afr/Ap 17 Mar-19 Mar 008/008-007/008-006/005 VI. Geomagnetic Activity Probabilities 17 Mar-19 Mar A. Middle Latitudes Active 10/10/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/20/15 Major-severe storm 15/15/05