:Product: 0524RSGA.txt :Issued: 2014 May 24 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 144 Issued at 2200Z on 24 May 2014 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M1 event observed at 24/1835Z from Region 2065 (S18W59). There are currently 6 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low with a slight chance for an M-class flare on days one, two, and three (25 May, 26 May, 27 May). IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet to minor storm levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 501 km/s at 24/0533Z. Total IMF reached 9 nT at 23/2107Z. The maximum southward component of Bz reached -7 nT at 23/2107Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and three (25 May, 27 May) and quiet to unsettled levels on day two (26 May). III. Event probabilities 25 May-27 May Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 May 118 Predicted 25 May-27 May 118/118/115 90 Day Mean 24 May 146 V. Geomagnetic A Indices Observed Afr/Ap 23 May 017/019 Estimated Afr/Ap 24 May 006/007 Predicted Afr/Ap 25 May-27 May 006/005-007/008-006/005 VI. Geomagnetic Activity Probabilities 25 May-27 May A. Middle Latitudes Active 05/15/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/20/15 Minor Storm 15/30/15 Major-severe storm 05/20/05