:Product: 1018RSGA.txt
:Issued: 2007 Oct 18 2202 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 291 Issued at 2200Z on 18 Oct 2007
IA.  Analysis of Solar Active Regions and Activity from  17/2100Z
to 18/2100Z:  Solar activity was very low.  The visible disk remains
spotless.
IB.  Solar Activity Forecast:  Solar activity is expected to remain
very low.
IIA.  Geophysical Activity Summary 17/2100Z to 18/2100Z:
The geomagnetic field began the summary period at quiet levels and
became briefly active between 09-12Z as a recurrent coronal hole
high speed stream became geoeffective.  Activity since 12Z has been
quiet to unsettled.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to range from unsettled to active for the next three days
under the continued influence of the high speed stream.
III.  Event Probabilities 19 Oct-21 Oct
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           18 Oct 068
Predicted   19 Oct-21 Oct  067/067/067
90 Day Mean        18 Oct 068
V.  Geomagnetic A Indices
Observed Afr/Ap 17 Oct  000/001
Estimated Afr/Ap 18 Oct  010/010
Predicted Afr/Ap 19 Oct-21 Oct  010/015-012/012-010/008
VI.  Geomagnetic Activity Probabilities 19 Oct-21 Oct
A.  Middle Latitudes
Active                20/20/20
Minor storm           10/15/10
Major-severe storm    05/10/05
B.  High Latitudes
Active                35/26/15
Minor storm           15/14/10
Major-severe storm    10/05/01