:Product: 0424RSGA.txt
:Issued: 2009 Apr 24 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 114 Issued at 2200Z on 24 Apr 2009
IA.  Analysis of Solar Active Regions and Activity from  23/2100Z
to 24/2100Z:  Solar activity was very low. No flares were detected.
The visible disk was spotless.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 23/2100Z to 24/2100Z:
Geomagnetic field activity was at quiet levels. However, a sudden
impulse (SI) occurred at approximately 24/0050Z (10 nT, as measured
by the Boulder-NOAA magnetometer). There was no obvious source for
the SI.
IIB.  Geophysical Activity Forecast:  Geomagnetic field activity is
expected to be at quiet levels through the forecast period (25 - 27
Apr).
III.  Event Probabilities 25 Apr-27 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           24 Apr 070
Predicted   25 Apr-27 Apr  070/070/070
90 Day Mean        24 Apr 070
V.  Geomagnetic A Indices
Observed Afr/Ap 23 Apr  000/003
Estimated Afr/Ap 24 Apr  004/005
Predicted Afr/Ap 25 Apr-27 Apr  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 25 Apr-27 Apr
A.  Middle Latitudes
Active                05/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                10/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01