:Product: 0329RSGA.txt
:Issued: 2008 Mar 29 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 089 Issued at 2200Z on 29 Mar 2008
IA.  Analysis of Solar Active Regions and Activity from  28/2100Z
to 29/2100Z:  Solar activity was very low. The three spotted regions
on the disk, 987 (S06W31), 988 (S08W06), and 989 (S12E23) were all
generally stable and quiet during the past 24 hours.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low. There is a chance, however, for an isolated C-class event
during the next three days (30 March - 01 April).
IIA.  Geophysical Activity Summary 28/2100Z to 29/2100Z:
The geomagnetic field was quiet to unsettled. Solar wind speed as
measured at ACE showed a downward trend during the period which is
indicative of the decline of the high speed solar wind stream;
day-end values were around 550 km/s. The greater than 2 MeV electron
flux at geosynchronous orbit reached very high levels during the
past 24 hours.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled for the first day (30 March) and
is expected to be predominantly quiet for the second and third days
(31 March - 01 April).
III.  Event Probabilities 30 Mar-01 Apr
Class M    05/05/05
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           29 Mar 083
Predicted   30 Mar-01 Apr  080/080/080
90 Day Mean        29 Mar 073
V.  Geomagnetic A Indices
Observed Afr/Ap 28 Mar  013/021
Estimated Afr/Ap 29 Mar  010/010
Predicted Afr/Ap 30 Mar-01 Apr  008/010-005/005-005/008
VI.  Geomagnetic Activity Probabilities 30 Mar-01 Apr
A.  Middle Latitudes
Active                20/10/10
Minor storm           10/05/05
Major-severe storm    05/01/01
B.  High Latitudes
Active                25/15/15
Minor storm           15/05/05
Major-severe storm    05/01/01