:Product: 1224RSGA.txt
:Issued: 2006 Dec 24 2204 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Environment Center and the U.S. Air Force.
#
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 358 Issued at 2200Z on 24 Dec 2006
IA.  Analysis of Solar Active Regions and Activity from  23/2100Z
to 24/2100Z:  Solar activity was very low.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field was quiet to unsettled. Solar wind speed at ACE
is currently elevated around 620 km/s. The greater than 2 MeV
electron flux at geosynchronous orbit reached high levels today.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled with isolated active conditions
possible on 25 December. On 26 December, conditions are expected to
be quiet to unsettled. On 27 December, unsettled to active
conditions are expected.
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 074
Predicted   25 Dec-27 Dec  075/075/075
90 Day Mean        24 Dec 082
V.  Geomagnetic A Indices
Observed Afr/Ap 23 Dec  010/015
Estimated Afr/Ap 24 Dec  008/010
Predicted Afr/Ap 25 Dec-27 Dec  008/008-005/005-012/015
VI.  Geomagnetic Activity Probabilities 25 Dec-27 Dec
A.  Middle Latitudes
Active                20/15/25
Minor storm           10/05/15
Major-severe storm    01/01/05
B.  High Latitudes
Active                30/25/35
Minor storm           15/10/20
Major-severe storm    05/01/10