:Product: 0524RSGA.txt
:Issued: 2010 May 24 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 144 Issued at 2200Z on 24 May 2010
IA.  Analysis of Solar Active Regions and Activity from  23/2100Z
to 24/2100Z:  Solar activity was very low.  The STEREO and SOHO/LASCO
imagery observed a CME today originating from the filament channel
located around N15W32.  This event was first observed on the C2
imagery around 24/1406Z.  The latest analysis indicated its
signature as a partial halo CME.  A long duration B1 flare at
24/1446Z was also associated with this event.  Region 1072 (S15W22)
has decreased slightly in white light areal coverage and sunspot
count and is a beta magnetic configuration.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low with a slight chance for a C-class flare from Region 1072.
IIA.  Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field was quiet.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be predominantly quiet for the first two days (25-26
May).  Unsettled to active conditions, with isolated minor storm
levels, are expected on day three (27 May).  This increase is
expected due to the CME activity of 23-24 May.
III.  Event Probabilities 25 May-27 May
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           24 May 073
Predicted   25 May-27 May  076/076/078
90 Day Mean        24 May 078
V.  Geomagnetic A Indices
Observed Afr/Ap 23 May  000/002
Estimated Afr/Ap 24 May  001/002
Predicted Afr/Ap 25 May-27 May  005/005-005/005-015/017
VI.  Geomagnetic Activity Probabilities 25 May-27 May
A.  Middle Latitudes
Active                05/05/30
Minor storm           01/01/10
Major-severe storm    01/01/01
B.  High Latitudes
Active                05/05/35
Minor storm           01/01/15
Major-severe storm    01/01/05