:Product: 0515RSGA.txt :Issued: 2012 May 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 Report of Solar and Geophysical Activity SDF Number 136 Issued at 2200Z on 15 May 2012 IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity was low. Previously active Region 1476 (N10W56) continued to decay over the past 24 hours, while producing a few nominal C-class flares. New Region 1485 (S19E65) was numbered today. IB. Solar Activity Forecast: Solar activity is expected to be low for the next 3 days (16-18 May). IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z: The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during the period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be mostly quiet over the next 3 days (16-18 May). III. Event Probabilities 16 May-18 May Class M 15/15/15 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 15 May 129 Predicted 16 May-18 May 125/125/122 90 Day Mean 15 May 114 V. Geomagnetic A Indices Observed Afr/Ap 14 May 007/005 Estimated Afr/Ap 15 May 006/007 Predicted Afr/Ap 16 May-18 May 008/008-004/005-004/005 VI. Geomagnetic Activity Probabilities 16 May-18 May A. Middle Latitudes Active 10/10/10 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/15 Minor storm 01/01/01 Major-severe storm 01/01/01