:Product: 0523RSGA.txt
:Issued: 2011 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 2011
IA.  Analysis of Solar Active Regions and Activity from  22/2100Z
to 23/2100Z:  Solar activity was very low.  The three spotted regions
on the disk are small and magnetically simple.
IB.  Solar Activity Forecast:  Solar activity is expected to remain
very low for the next three days (23 - 25 May).
IIA.  Geophysical Activity Summary 22/2100Z to 23/2100Z:
The geomagnetic field was quiet.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet on Days 1 and 2 (23-24 May), becoming quiet to
unsettled with the approach of a recurrent coronal hole high speed
stream on Day 3 (25 May).
III.  Event Probabilities 24 May-26 May
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           23 May 084
Predicted   24 May-26 May  085/085/085
90 Day Mean        23 May 108
V.  Geomagnetic A Indices
Observed Afr/Ap 22 May  003/004
Estimated Afr/Ap 23 May  005/005
Predicted Afr/Ap 24 May-26 May  005/005-005/005-008/008
VI.  Geomagnetic Activity Probabilities 24 May-26 May
A.  Middle Latitudes
Active                10/10/20
Minor storm           05/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/30
Minor storm           05/05/10
Major-severe storm    01/01/05