Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center and the U.S. Air Force.
Updated 2009 Jan 13 2201 UTC
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 013 Issued at 2200Z on 13 Jan 2009
IA. Analysis of Solar Active Regions and Activity from 12/2100Z
to 13/2100Z: Solar activity was very low. The only region on the
visible disk is Region 1010 (N18W20) which has been quiet as it
experienced slow decay.
IB. Solar Activity Forecast: Solar activity is expected to be very
low. There is a slight chance for a C-class flare from Region 1010.
IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z:
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be predominately quiet for the next three days (14 - 16
January).
III. Event Probabilities 14 Jan-16 Jan
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 13 Jan 071
Predicted 14 Jan-16 Jan 070/070/070
90 Day Mean 13 Jan 069
V. Geomagnetic A Indices
Observed Afr/Ap 12 Jan 000/000
Estimated Afr/Ap 13 Jan 005/005
Predicted Afr/Ap 14 Jan-16 Jan 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 14 Jan-16 Jan
A. Middle Latitudes
Active 01/01/01
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01