:Product: 1221RSGA.txt
:Issued: 2008 Dec 21 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 356 Issued at 2200Z on 21 Dec 2008
IA.  Analysis of Solar Active Regions and Activity from  20/2100Z
to 21/2100Z:  Solar activity was very low.  The visible disk remained
spotless.  Please note: the observed Penticton 10.7 cm flux of 69 is
estimated today.
IB.  Solar Activity Forecast:  Solar activity is expected to remain
at very low levels.
IIA.  Geophysical Activity Summary 20/2100Z to 21/2100Z:
The geomagnetic field was at quiet levels.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled on 22 - 23 December.  A recurrent
coronal hole high speed stream is expected to rotate into a
geoeffective position on 22 December and affect the field through
the 23rd.  Mostly quiet conditions are expected by 24 December.
III.  Event Probabilities 22 Dec-24 Dec
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           21 Dec 069
Predicted   22 Dec-24 Dec  069/069/069
90 Day Mean        21 Dec 069
V.  Geomagnetic A Indices
Observed Afr/Ap 20 Dec  002/002
Estimated Afr/Ap 21 Dec  002/005
Predicted Afr/Ap 22 Dec-24 Dec  010/010-008/008-005/005
VI.  Geomagnetic Activity Probabilities 22 Dec-24 Dec
A.  Middle Latitudes
Active                20/15/10
Minor storm           05/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                20/15/10
Minor storm           05/01/01
Major-severe storm    01/01/01