:Product: 0408RSGA.txt
:Issued: 2008 Apr 08 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 099 Issued at 2200Z on 08 Apr 2008
IA.  Analysis of Solar Active Regions and Activity from  07/2100Z
to 08/2100Z:  Solar activity was very low. A non Earth-directed CME
was first observed off the west limb on SOHO/LASCO C2 imagery at
08/1750Z. No new regions were numbered.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 07/2100Z to 08/2100Z:
The geomagnetic field was quiet to unsettled. Solar wind velocities
remained elevated due to the continuing high speed stream. 
Velocities from the ACE satellite ranged from 604 km/sec to 778
km/sec during the past 24 hours. IMF Bz continued to fluctuate
between -4.9 nT to 5.7 nT. The 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
for the next two days (09-10 April). Isolated minor storm levels are
possible at high latitudes during this period due to the high speed
stream.  Activity is expected to be quiet to unsettled on day three
(11 April).
III.  Event Probabilities 09 Apr-11 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           08 Apr 070
Predicted   09 Apr-11 Apr  070/070/070
90 Day Mean        08 Apr 072
V.  Geomagnetic A Indices
Observed Afr/Ap 07 Apr  009/012
Estimated Afr/Ap 08 Apr  007/010
Predicted Afr/Ap 09 Apr-11 Apr  008/010-008/010-005/005
VI.  Geomagnetic Activity Probabilities 09 Apr-11 Apr
A.  Middle Latitudes
Active                20/20/15
Minor storm           05/05/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                30/30/25
Minor storm           10/10/10
Major-severe storm    05/05/01