:Product: 0715RSGA.txt :Issued: 2013 Jul 15 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 196 Issued at 2200Z on 15 Jul 2013 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C3 event observed at 15/1055Z from Region 1791 (S14E04). There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low with a chance for M-class flares on days one, two, and three (16 Jul, 17 Jul, 18 Jul). IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z: 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 433 km/s at 15/1151Z. Total IMF reached 10 nT at 14/2255Z. The maximum southward component of Bz reached -10 nT at 14/2248Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1066 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (16 Jul, 17 Jul) and unsettled to active levels on day three (18 Jul). III. Event probabilities 16 Jul-18 Jul Class M 25/25/25 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 15 Jul 114 Predicted 16 Jul-18 Jul 115/115/120 90 Day Mean 15 Jul 121 V. Geomagnetic A Indices Observed Afr/Ap 14 Jul 015/027 Estimated Afr/Ap 15 Jul 021/025 Predicted Afr/Ap 16 Jul-18 Jul 009/008-009/010-011/015 VI. Geomagnetic Activity Probabilities 16 Jul-18 Jul A. Middle Latitudes Active 15/20/35 Minor Storm 05/05/15 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/10 Minor Storm 25/30/30 Major-severe storm 20/25/50