:Product: 0727RSGA.txt
:Issued: 2006 Jul 27 2203 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Environment Center and the U.S. Air Force.
#
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 208 Issued at 2200Z on 27 Jul 2006
IA.  Analysis of Solar Active Regions and Activity from  26/2100Z
to 27/2100Z:  Solar activity continues at very low levels. Region 901
(N05E00), the only sunspot group on the visible disk, produced
occasional low B-class flares. Considerable decay was observed in
the trailing sunspots in this region; however, new negative flux
emerged northwest of the leader spot. This location was the source
of most of the B-class flares.
IB.  Solar Activity Forecast:  Solar activity is expected to continue
at very low levels.
IIA.  Geophysical Activity Summary 26/2100Z to 27/2100Z:
The geomagnetic field was quiet. Solar wind speed increased gradually
from 330 km/s to near 450 km/s by the end of the period. This
increase is associated with a weak high speed coronal hole stream.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet with isolated unsettled periods.
III.  Event Probabilities 28 Jul-30 Jul
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           27 Jul 074
Predicted   28 Jul-30 Jul  075/075/075
90 Day Mean        27 Jul 078
V.  Geomagnetic A Indices
Observed Afr/Ap 26 Jul  005/006
Estimated Afr/Ap 27 Jul  005/005
Predicted Afr/Ap 28 Jul-30 Jul  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 28 Jul-30 Jul
A.  Middle Latitudes
Active                15/15/15
Minor storm           05/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                20/20/20
Minor storm           05/05/05
Major-severe storm    01/01/01