:Product: 0327RSGA.txt :Issued: 2014 Mar 27 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 86 Issued at 2200Z on 27 Mar 2014 IA. Analysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C4 event observed at 27/2029Z from Region 2010 (S15W68). There are currently 6 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a slight chance for an M-class flare on days one, two, and three (28 Mar, 29 Mar, 30 Mar). IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 450 km/s at 27/0458Z. Total IMF reached 8 nT at 26/2310Z. The maximum southward component of Bz reached -5 nT at 27/0804Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (28 Mar, 29 Mar, 30 Mar). III. Event probabilities 28 Mar-30 Mar Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 27 Mar 145 Predicted 28 Mar-30 Mar 145/145/140 90 Day Mean 27 Mar 159 V. Geomagnetic A Indices Observed Afr/Ap 26 Mar 007/007 Estimated Afr/Ap 27 Mar 008/008 Predicted Afr/Ap 28 Mar-30 Mar 006/005-006/005-006/005 VI. Geomagnetic Activity Probabilities 28 Mar-30 Mar A. Middle Latitudes Active 05/05/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 15/15/15 Major-severe storm 05/05/05