:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Jul 28 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 209 Issued at 2200Z on 28 Jul 2009
IA.  Analysis of Solar Active Regions and Activity from  27/2100Z
to 28/2100Z:  Solar activity was very low. No flares occurred during
the past 24 hours. The solar disk continues to be void of sunspots.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field was quiet during the past 24 hours.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet for the next two days (29-30 July). A slight
increase is possible on the third day (31 July) due to a favorably
positioned coronal hole; quiet to unsettled levels should
predominate although there is a slight chance for an active period.
III.  Event Probabilities 29 Jul-31 Jul
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           28 Jul 069
Predicted   29 Jul-31 Jul  069/070/070
90 Day Mean        28 Jul 069
V.  Geomagnetic A Indices
Observed Afr/Ap 27 Jul  002/004
Estimated Afr/Ap 28 Jul  005/005
Predicted Afr/Ap 29 Jul-31 Jul  005/005-005/005-007/007
VI.  Geomagnetic Activity Probabilities 29 Jul-31 Jul
A.  Middle Latitudes
Active                05/05/20
Minor storm           01/01/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                05/05/20
Minor storm           01/01/10
Major-severe storm    01/01/05