:Product: 0525RSGA.txt
:Issued: 2006 May 25 2203 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 145 Issued at 2200Z on 25 May 2006
IA.  Analysis of Solar Active Regions and Activity from  24/2100Z
to 25/2100Z:  Solar activity was very low. Today's activity consisted
of a few, low-level B-class events. There is also an indication in
solar x-ray images of the return of old Region 882, which is just
behind the east limb at about S12. Region 882 produced a few B-class
events and reached a maximum area of 130 millionths on its
previous transit. The region appears to be quiet and stable at this
time.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low for the next three days (26-28 May).
IIA.  Geophysical Activity Summary 24/2100Z to 25/2100Z:
The geomagnetic field was quiet during the past 24 hours. Real-time
solar wind from ACE indicated the possible onset of a sector
boundary, beginning at about 1800Z. As of forecast issue time there
had not yet been any geomagnetic response.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled for the next 24 hours (26 May).
Conditions should return to predominantly quiet levels for 27-28
May.
III.  Event Probabilities 26 May-28 May
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           25 May 084
Predicted   26 May-28 May  085/085/085
90 Day Mean        25 May 081
V.  Geomagnetic A Indices
Observed Afr/Ap 24 May  003/004
Estimated Afr/Ap 25 May  007/006
Predicted Afr/Ap 26 May-28 May  007/010-005/005-005/005
VI.  Geomagnetic Activity Probabilities 26 May-28 May
A.  Middle Latitudes
Active                15/10/10
Minor storm           10/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/10/10
Minor storm           10/05/05
Major-severe storm    01/01/01