:Product: 0328RSGA.txt
:Issued: 2008 Mar 28 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 088 Issued at 2200Z on 28 Mar 2008
IA.  Analysis of Solar Active Regions and Activity from  27/2100Z
to 28/2100Z:  Solar activity was very low.  Region 987 (S08W18), 988
(S08E07), and 989 (S12E36) have shown little change and retain their
beta magnetic configuration.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low to low.  There is a chance of a C-class event from any of the
three numbered regions on the disk.
IIA.  Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field was at unsettled to minor storm levels due to
the continued influence of the recurrent coronal hole high speed
stream.  Solar wind speed at the ACE spacecraft is averaging around
640 km/s.  The greater than 2MeV electron flux at geosynchronous
orbit was at high levels today.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be unsettled with isolated active conditions for 29-30
March.  Predominately quiet levels are expected for 31 March as the
high speed stream rotates out of a geoeffective position.
III.  Event Probabilities 29 Mar-31 Mar
Class M    10/10/10
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           28 Mar 083
Predicted   29 Mar-31 Mar  085/085/080
90 Day Mean        28 Mar 073
V.  Geomagnetic A Indices
Observed Afr/Ap 27 Mar  019/031
Estimated Afr/Ap 28 Mar  018/020
Predicted Afr/Ap 29 Mar-31 Mar  010/010-008/010-005/005
VI.  Geomagnetic Activity Probabilities 29 Mar-31 Mar
A.  Middle Latitudes
Active                15/15/10
Minor storm           05/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                20/20/10
Minor storm           10/10/05
Major-severe storm    05/05/01