:Product: 1224RSGA.txt
:Issued: 2008 Dec 24 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 359 Issued at 2200Z on 24 Dec 2008
IA.  Analysis of Solar Active Regions and Activity from  23/2100Z
to 24/2100Z:  Solar activity was very low. No flares were observed.
The visible disk was spotless.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 23/2100Z to 24/2100Z:
Geomagnetic field activity was at quiet to unsettled levels. ACE
solar wind data indicated Earth remained within a recurrent coronal
hole high-speed stream. Solar wind velocities gradually decreased
from a high of 552 km/sec to a low of 452 km/sec during the period.
IMF Bz was variable in the +05 to -05 nT range.
IIB.  Geophysical Activity Forecast:  Geomagnetic field activity is
expected to be at mostly quiet levels during the forecast period (25
- 27 December).
III.  Event Probabilities 25 Dec-27 Dec
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           24 Dec 069
Predicted   25 Dec-27 Dec  069/070/071
90 Day Mean        24 Dec 069
V.  Geomagnetic A Indices
Observed Afr/Ap 23 Dec  008/009
Estimated Afr/Ap 24 Dec  008/008
Predicted Afr/Ap 25 Dec-27 Dec  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 25 Dec-27 Dec
A.  Middle Latitudes
Active                10/05/01
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/10/05
Minor storm           01/01/01
Major-severe storm    01/01/01