:Product: 20050524RSGA.txt
:Issued: 2005 May 24 2210 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
#Space Environment 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 2005
IA.  Analysis of Solar Active Regions and Activity from  23/2100Z
to 24/2100Z:  Solar activity continued at very low levels. Region 767
(S08E40) is in a slow growth phase and produced occasional B-class
flares. Region 766 (N13E37), the only other sunspot group on the
visible disk, was stable.
IB.  Solar Activity Forecast:  Solar activity is expected to continue
at very low levels. There is a slight chance for a C-class flare
from Region 767.
IIA.  Geophysical Activity Summary 23/2100Z to 24/2100Z:
The geomagnetic field was quiet. Solar wind speed declined to below
400 km/s.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet with occasional unsettled periods on 25 and 26
May. A recurrent coronal hole high speed stream is expected to
rotate into geoeffective position on 27 May, and produce occasional
active periods.
III.  Event Probabilities 25 May-27 May
Class M    05/05/05
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           24 May 085
Predicted   25 May-27 May  085/085/085
90 Day Mean        24 May 091
V.  Geomagnetic A Indices
Observed Afr/Ap 23 May  005/007
Estimated Afr/Ap 24 May  005/005
Predicted Afr/Ap 25 May-27 May  005/008-005/010-010/015
VI.  Geomagnetic Activity Probabilities 25 May-27 May
A.  Middle Latitudes
Active                15/20/30
Minor storm           05/05/10
Major-severe storm    01/01/05
B.  High Latitudes
Active                20/25/40
Minor storm           10/10/20
Major-severe storm    01/01/10