:Product: 0522RSGA.txt
:Issued: 2008 May 22 2203 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 22 May 2008
IA.  Analysis of Solar Active Regions and Activity from  21/2100Z
to 22/2100Z:  Solar activity was very low. The visible disk is
spotless. A 10 degree filament near S25E08 disappeared between 
0734-1338Z.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 21/2100Z to 22/2100Z:
The geomagnetic field was quiet to unsettled. Solar wind speed
decreased gradually from approximately 620 km/s to values ranging
between 580 - 520 km/s. The solar wind signatures were consistent
with a high speed stream from a coronal hole.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled with a chance for isolated active
periods for the next three days (23 - 25 May) due to persistent
effects from the high speed stream.
III.  Event Probabilities 23 May-25 May
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           22 May 069
Predicted   23 May-25 May  068/068/068
90 Day Mean        22 May 071
V.  Geomagnetic A Indices
Observed Afr/Ap 21 May  009/013
Estimated Afr/Ap 22 May  010/010
Predicted Afr/Ap 23 May-25 May  008/010-008/010-008/010
VI.  Geomagnetic Activity Probabilities 23 May-25 May
A.  Middle Latitudes
Active                25/25/25
Minor storm           10/10/10
Major-severe storm    01/01/01
B.  High Latitudes
Active                40/40/25
Minor storm           20/20/15
Major-severe storm    10/10/05