:Product: 0326RSGA.txt :Issued: 2014 Mar 26 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 85 Issued at 2200Z on 26 Mar 2014 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 26/1102Z from Region 2014 (S13W19). There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (27 Mar, 28 Mar, 29 Mar). IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 554 km/s at 26/0049Z. Total IMF reached 9 nT at 26/1121Z. The maximum southward component of Bz reached -7 nT at 26/0055Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (27 Mar, 28 Mar, 29 Mar). III. Event probabilities 27 Mar-29 Mar Class M 25/25/25 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 26 Mar 153 Predicted 27 Mar-29 Mar 160/160/160 90 Day Mean 26 Mar 159 V. Geomagnetic A Indices Observed Afr/Ap 25 Mar 007/008 Estimated Afr/Ap 26 Mar 008/010 Predicted Afr/Ap 27 Mar-29 Mar 006/005-006/005-006/005 VI. Geomagnetic Activity Probabilities 27 Mar-29 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