:Product: 0523RSGA.txt
:Issued: 2010 May 23 2200 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 143 Issued at 2200Z on 23 May 2010
IA.  Analysis of Solar Active Regions and Activity from  22/2100Z
to 23/2100Z:  Solar activity was very low.  The STEREO COR2 imagery
observed a CME around 23/1809Z.  This CME was correlated with GOES
x-ray images originating from an area along a filament channel
located between N24W05 to N01W23.  Associated with the CME was a
long duration B1 x-ray flare at 23/1801Z.  Region 1072 (S15W09)
continues to grow in white light areal coverage and sunspot count
and has produced two low-level B-class flares during the period. 
The region maintained a beta magnetic configuration.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.  There is a chance for a C-class flare, and a slight chance for
a M-class event, from Region 1072.
IIA.  Geophysical Activity Summary 22/2100Z to 23/2100Z:
The geomagnetic field was quiet.  The solar wind speed continued to
average around 370 km/s through the period.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be at quiet levels for the next three days (24-26 May).
III.  Event Probabilities 24 May-26 May
Class M    10/10/10
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           23 May 075
Predicted   24 May-26 May  076/076/078
90 Day Mean        23 May 078
V.  Geomagnetic A Indices
Observed Afr/Ap 22 May  002/004
Estimated Afr/Ap 23 May  001/004
Predicted Afr/Ap 24 May-26 May  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 24 May-26 May
A.  Middle Latitudes
Active                05/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                05/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01