:Product: Report of Solar-Geophysical Activity
:Issued: 2009 May 18 2201 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 138 Issued at 2200Z on 18 May 2009
IA.  Analysis of Solar Active Regions and Activity from  17/2100Z
to 18/2100Z:  Solar activity was very low. Region 1017 (N18W35)
continues to decay, presently a three spot Bxo. The region has
produced no flares in the past 24 hours.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 17/2100Z to 18/2100Z:
The geomagnetic field was quiet.
IIB.  Geophysical Activity Forecast:  The Geomagnetic field is
expected to be quiet during the forecast period (19-21 May).
III.  Event Probabilities 19 May-21 May
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           18 May 073
Predicted   19 May-21 May  074/074/074
90 Day Mean        18 May 070
V.  Geomagnetic A Indices
Observed Afr/Ap 17 May  002/003
Estimated Afr/Ap 18 May  005/005
Predicted Afr/Ap 19 May-21 May  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 19 May-21 May
A.  Middle Latitudes
Active                05/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                10/10/00
Minor storm           01/01/01
Major-severe storm    01/01/01