:Product: 0120RSGA.txt
:Issued: 2007 Jan 20 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 020 Issued at 2200Z on 20 Jan 2007
IA.  Analysis of Solar Active Regions and Activity from  19/2100Z
to 20/2100Z:  Solar activity was very low. New Region 939 (S03W17)
was numbered today.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low with isolated C-flare activity possible from Region 939.
IIA.  Geophysical Activity Summary 19/2100Z to 20/2100Z:
The geomagnetic field was quiet to unsettled. Solar wind speed at ACE
has decreased from approximately 650 km/s to 580 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.
III.  Event Probabilities 21 Jan-23 Jan
Class M    01/05/05
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           20 Jan 079
Predicted   21 Jan-23 Jan  080/080/080
90 Day Mean        20 Jan 084
V.  Geomagnetic A Indices
Observed Afr/Ap 19 Jan  009/011
Estimated Afr/Ap 20 Jan  008/008
Predicted Afr/Ap 21 Jan-23 Jan  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 21 Jan-23 Jan
A.  Middle Latitudes
Active                10/10/10
Minor storm           05/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/10/10
Minor storm           05/05/05
Major-severe storm    01/01/01