:Product: 0402RSGA.txt
:Issued: 2010 Apr 02 2201 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 092 Issued at 2200Z on 02 Apr 2010
IA.  Analysis of Solar Active Regions and Activity from  01/2100Z
to 02/2100Z:  Solar activity was very low.  Region 1057 (N16W59) and
Region 1059 (S23W03) both remain stable and quiet.  No flares were
observed during the past 24 hours.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 01/2100Z to 02/2100Z:
The geomagnetic field was quiet to active.  The ACE spacecraft
indicated a shock around 02/0635Z.  Solar wind speed increased from
around 435 km/s to 540 km/s, density increased, and the IMF
sustained several hours of southward Bz.  The Boulder magnetometer
observed a 19 nT sudden impulse at 02/0721Z.  The exact source for
the activity is not known, however, it may have resulted from the
CME observed on 30 March.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be predominantly quiet with isolated periods of
unsettled conditions for the next three days (03-05 April).
III.  Event Probabilities 03 Apr-05 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           02 Apr 076
Predicted   03 Apr-05 Apr  075/075/080
90 Day Mean        02 Apr 083
V.  Geomagnetic A Indices
Observed Afr/Ap 01 Apr  009/012
Estimated Afr/Ap 02 Apr  012/012
Predicted Afr/Ap 03 Apr-05 Apr  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 03 Apr-05 Apr
A.  Middle Latitudes
Active                01/01/01
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                01/01/01
Minor storm           01/01/01
Major-severe storm    01/01/01