:Product: 1219RSGA.txt
:Issued: 2010 Dec 19 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 353 Issued at 2200Z on 19 Dec 2010
IA.  Analysis of Solar Active Regions and Activity from  18/2100Z
to 19/2100Z:  Solar activity was very low.  The visible disk was
spotless.
IB.  Solar Activity Forecast:  Solar activity is expected to remain
very low.
IIA.  Geophysical Activity Summary 18/2100Z to 19/2100Z:
The geomagnetic field was quiet.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled on day one (20 December) as a
coronal hole high speed stream becomes geoeffective.  Quiet
conditions are expected to prevail on days two and three (21-22
December) as the coronal hole high speed stream departs.
III.  Event Probabilities 20 Dec-22 Dec
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           19 Dec 081
Predicted   20 Dec-22 Dec  078/078/078
90 Day Mean        19 Dec 083
V.  Geomagnetic A Indices
Observed Afr/Ap 18 Dec  002/002
Estimated Afr/Ap 19 Dec  002/005
Predicted Afr/Ap 20 Dec-22 Dec  007/008-005/005-005/005
VI.  Geomagnetic Activity Probabilities 20 Dec-22 Dec
A.  Middle Latitudes
Active                10/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/10/05
Minor storm           05/01/01
Major-severe storm    01/01/01