:Product: 1228RSGA.txt
:Issued: 2009 Dec 28 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 362 Issued at 2200Z on 28 Dec 2009
IA.  Analysis of Solar Active Regions and Activity from  27/2100Z
to 28/2100Z:  Solar activity was very low.  Region 1039 (S28E18) has
shown little change from yesterday and remains a beta group.  No
flares were observed during the past 24 hours.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low to low.  There is a chance for an isolated C-flare from Region
1039.
IIA.  Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field was quiet.  Observations from the ACE
spacecraft show solar wind velocities average around 335 km/s with
minor fluctuations in the IMF southward component, Bz, from +2/-2
nT.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be predominantly quiet for the next three days (29-31
December).
III.  Event Probabilities 29 Dec-31 Dec
Class M    05/05/05
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           28 Dec 076
Predicted   29 Dec-31 Dec  078/078/079
90 Day Mean        28 Dec 074
V.  Geomagnetic A Indices
Observed Afr/Ap 27 Dec  001/002
Estimated Afr/Ap 28 Dec  001/005
Predicted Afr/Ap 29 Dec-31 Dec  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 29 Dec-31 Dec
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