:Product: 0528RSGA.txt
:Issued: 2009 May 28 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 148 Issued at 2200Z on 28 May 2009
IA.  Analysis of Solar Active Regions and Activity from  27/2100Z
to 28/2100Z:  Solar activity continued to be very low. The disk is
spotless and no flares occurred.
IB.  Solar Activity Forecast:  Solar activity is expected to remain
very low.
IIA.  Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field was quiet to mildly unsettled. A sudden impulse
measuring 33 nT at Boulder occurred at 0520 UTC, bringing unsettled
conditions in its wake. The source of this impulse is of dubious
origin.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet throughout the forecast period.
III.  Event Probabilities 29 May-31 May
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           28 May 068
Predicted   29 May-31 May  068/068/068
90 Day Mean        28 May 069
V.  Geomagnetic A Indices
Observed Afr/Ap 27 May  002/003
Estimated Afr/Ap 28 May  005/005
Predicted Afr/Ap 29 May-31 May  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 29 May-31 May
A.  Middle Latitudes
Active                15/10/10
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/10
Minor storm           01/01/01
Major-severe storm    01/01/01