:Product: 0326RSGA.txt
:Issued: 2008 Mar 26 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 086 Issued at 2200Z on 26 Mar 2008
IA.  Analysis of Solar Active Regions and Activity from  25/2100Z
to 26/2100Z:  Solar activity was very low.  Region 987 (S08E08) and
988 (S08E33) have remained fairly stable and both retain their beta
magnetic configuration.  Region 989 (S10E62) has also been stable,
however, it remains too close to the limb for determining the
magnetic classification.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low to low.  Region 987, 988, and 989 are capable of producing
C-class flares.  An M-class event is possible from Region 989.
IIA.  Geophysical Activity Summary 25/2100Z to 26/2100Z:
The geomagnetic field was at quiet to minor storm conditions due to
the influence of a recurrent coronal hole high speed stream.  Solar
wind observations at the ACE spacecraft increased from an average
around 370 km/s to a maximum of 602 at 26/1429Z.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be at unsettled to active levels with isolated minor
storm conditions for 27 March due to the coronal hole high speed
stream.  Isolated periods of major storm conditions are possible at
high latitudes.  Unsettled to isolated active conditions are
expected for 28-29 March.
III.  Event Probabilities 27 Mar-29 Mar
Class M    50/50/50
Class X    05/05/05
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           26 Mar 082
Predicted   27 Mar-29 Mar  090/095/095
90 Day Mean        26 Mar 072
V.  Geomagnetic A Indices
Observed Afr/Ap 25 Mar  003/004
Estimated Afr/Ap 26 Mar  020/020
Predicted Afr/Ap 27 Mar-29 Mar  020/025-015/015-010/010
VI.  Geomagnetic Activity Probabilities 27 Mar-29 Mar
A.  Middle Latitudes
Active                30/25/15
Minor storm           15/10/05
Major-severe storm    10/05/01
B.  High Latitudes
Active                35/30/20
Minor storm           20/15/10
Major-severe storm    15/10/05