:Product: 1013RSGA.txt :Issued: 2015 Oct 13 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 286 Issued at 2200Z on 13 Oct 2015 IA. Analysis of Solar Active Regions and Activity from 12/2100Z to 13/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C9 event observed at 13/1411Z from Region 2434 (S08E74). There are currently 4 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 (14 Oct, 15 Oct, 16 Oct). IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z: 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 617 km/s at 13/0531Z. Total IMF reached 8 nT at 13/0018Z. The maximum southward component of Bz reached -6 nT at 13/1512Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 10091 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at unsettled to minor storm levels on days one, two, and three (14 Oct, 15 Oct, 16 Oct). III. Event probabilities 14 Oct-16 Oct Class M 30/30/40 Class X 01/01/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 13 Oct 096 Predicted 14 Oct-16 Oct 105/110/115 90 Day Mean 13 Oct 101 V. Geomagnetic A Indices Observed Afr/Ap 12 Oct 016/024 Estimated Afr/Ap 13 Oct 018/026 Predicted Afr/Ap 14 Oct-16 Oct 021/030-021/030-021/030 VI. Geomagnetic Activity Probabilities 14 Oct-16 Oct A. Middle Latitudes Active 40/40/40 Minor Storm 25/25/25 Major-severe storm 10/10/10 B. High Latitudes Active 05/05/05 Minor Storm 25/25/25 Major-severe storm 65/65/65