:Product: Report of Solar-Geophysical Activity
:Issued: 2009 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 2009
IA.  Analysis of Solar Active Regions and Activity from  01/2100Z
to 02/2100Z:  Solar activity was very low. No flares occurred during
the past 24 hours and the solar disk was void of sunspots.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low for the next three days (3-5 April).
IIA.  Geophysical Activity Summary 01/2100Z to 02/2100Z:
The geomagnetic field was quiet during the past 24 hours.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled for 3-4 April in anticipation of a
small increase in solar wind velocity. The increase is forecast
based on recurrence and based on observations of an increase at
Stereo-B on 31 March. The geomagnetic field is expected to be quiet
on the third day (5 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 071
Predicted   03 Apr-05 Apr  071/071/071
90 Day Mean        02 Apr 070
V.  Geomagnetic A Indices
Observed Afr/Ap 01 Apr  003/004
Estimated Afr/Ap 02 Apr  003/005
Predicted Afr/Ap 03 Apr-05 Apr  007/008-007/008-005/005
VI.  Geomagnetic Activity Probabilities 03 Apr-05 Apr
A.  Middle Latitudes
Active                10/10/05
Minor storm           05/05/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/10
Minor storm           10/10/05
Major-severe storm    01/01/01