:Product: 0413RSGA.txt
:Issued: 2008 Apr 13 2203 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 104 Issued at 2200Z on 13 Apr 2008
IA.  Analysis of Solar Active Regions and Activity from  12/2100Z
to 13/2100Z:  Solar activity was very low.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 12/2100Z to 13/2100Z:
The geomagnetic field was quiet to unsettled.  Solar wind velocity
remains elevated in the 550 - 600 km/sec range.  The greater than 2
MeV electron flux at geosynchronous orbit reached high levels again
today.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet at mid-latitudes for the forecast period, 14-16
April.  Isolated active to minor storm conditions at high-latitudes
remains a possibility due to the elevated solar wind velocity.
III.  Event Probabilities 14 Apr-16 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           13 Apr 069
Predicted   14 Apr-16 Apr  070/070/070
90 Day Mean        13 Apr 072
V.  Geomagnetic A Indices
Observed Afr/Ap 12 Apr  008/011
Estimated Afr/Ap 13 Apr  005/005
Predicted Afr/Ap 14 Apr-16 Apr  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 14 Apr-16 Apr
A.  Middle Latitudes
Active                15/15/15
Minor storm           05/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                25/25/20
Minor storm           15/15/10
Major-severe storm    01/01/01