:Product: 1231RSGA.txt
:Issued: 2010 Dec 31 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 365 Issued at 2200Z on 31 Dec 2010
IA.  Analysis of Solar Active Regions and Activity from  30/2100Z
to 31/2100Z:  Solar activity increased to low levels. Region 1138
(N12W70) produced a C1 flare at 31/0425Z associated with a Type II
radio sweep (estimated shock velocity 875 km/s) and a
non-Earth-directed CME. New Region 1140 (N32E67) produced a B9 flare
at 31/1934Z.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low to low during the period (01 - 03 January) with a chance for
isolated C-class flares from Region 1140.
IIA.  Geophysical Activity Summary 30/2100Z to 31/2100Z:
The geomagnetic field was quiet.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be at quiet levels through the period (01 - 03 January).
III.  Event Probabilities 01 Jan-03 Jan
Class M    05/05/05
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           31 Dec 091
Predicted   01 Jan-03 Jan  092/090/088
90 Day Mean        31 Dec 083
V.  Geomagnetic A Indices
Observed Afr/Ap 30 Dec  004/005
Estimated Afr/Ap 31 Dec  004/005
Predicted Afr/Ap 01 Jan-03 Jan  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 01 Jan-03 Jan
A.  Middle Latitudes
Active                05/05/05
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