:Product: 0327RSGA.txt
:Issued: 2008 Mar 27 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 087 Issued at 2200Z on 27 Mar 2008
IA.  Analysis of Solar Active Regions and Activity from  26/2100Z
to 27/2100Z:  Solar activity was very low.  Region's 987 (S08W05),
988 (S08E19), and 989 (S12E49) are all beta type groups and have not
produced any significant events during the last 24 hour period.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low to low.  There is a chance for a C-class flare from any of the
three numbered regions on the disk, and a very slight chance for an
M-class event.
IIA.  Geophysical Activity Summary 26/2100Z to 27/2100Z:
The geomagnetic field ranged from quiet to major storm conditions due
to the continued influence of the recurrent coronal hole high speed
stream.  Solar wind speeds remain in excess of 650 km/s.  The
greater than 2MeV electron flux at geosynchronous orbit reached high
levels today.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be predominately unsettled with isolated periods of
active conditions for 28-29 March.  Conditions are expected to
decrease to quiet to unsettled levels on 30 March.
III.  Event Probabilities 28 Mar-30 Mar
Class M    15/15/15
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           27 Mar 085
Predicted   28 Mar-30 Mar  085/085/085
90 Day Mean        27 Mar 073
V.  Geomagnetic A Indices
Observed Afr/Ap 26 Mar  016/027
Estimated Afr/Ap 27 Mar  018/025
Predicted Afr/Ap 28 Mar-30 Mar  015/015-010/010-008/010
VI.  Geomagnetic Activity Probabilities 28 Mar-30 Mar
A.  Middle Latitudes
Active                25/15/15
Minor storm           10/05/05
Major-severe storm    05/01/01
B.  High Latitudes
Active                30/20/20
Minor storm           15/10/10
Major-severe storm    10/05/05