:Product: 0407RSGA.txt
:Issued: 2008 Apr 07 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 098 Issued at 2200Z on 07 Apr 2008
IA.  Analysis of Solar Active Regions and Activity from  06/2100Z
to 07/2100Z:  Solar activity was very low. No flares were observed
during the past 24 hours. No new regions were numbered.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 06/2100Z to 07/2100Z:
The geomagnetic field ranged from quiet to active conditions due to
the continued effects of the high speed stream. Solar wind
measurements from the ACE satellite ranged from 546 km/sec to 677
km/sec, and Bz varied from -4.9 nT to 5.1 nT throughout the period.
The 2 MeV electron flux at geosynchronous orbit reached high levels
during the past 24 hours.
IIB.  Geophysical Activity Forecast:  The geomagnetic filed is
expected to be quiet to unsettled with isolated active periods for
the next three days (08-10 April). Isolated minor storm conditions
are possible at high latitudes due the continued effects of the
coronal hole.
III.  Event Probabilities 08 Apr-10 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           07 Apr 069
Predicted   08 Apr-10 Apr  070/070/070
90 Day Mean        07 Apr 072
V.  Geomagnetic A Indices
Observed Afr/Ap 06 Apr  011/018
Estimated Afr/Ap 07 Apr  006/012
Predicted Afr/Ap 08 Apr-10 Apr  010/010-010/010-010/010
VI.  Geomagnetic Activity Probabilities 08 Apr-10 Apr
A.  Middle Latitudes
Active                25/25/25
Minor storm           05/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                35/35/35
Minor storm           10/10/10
Major-severe storm    05/05/05