:Product: 0720RSGA.txt
:Issued: 2010 Jul 20 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 201 Issued at 2200Z on 20 Jul 2010
IA.  Analysis of Solar Active Regions and Activity from  19/2100Z
to 20/2100Z:  Solar activity was low due to a C1/Sf flare at 1345Z
from Region 1089 (S24E58). Region 1089 is a moderate-sized D-type
sunspot group with a beta magnetic classification.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low to low. There is a chance for additional C-class events from
Region 1089.
IIA.  Geophysical Activity Summary 19/2100Z to 20/2100Z:
The geomagnetic field was quiet.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled during the next three days (21-23
July). A gradual increase in activity is expected due to a favorably
positioned coronal hole.
III.  Event Probabilities 21 Jul-23 Jul
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           20 Jul 087
Predicted   21 Jul-23 Jul  085/085/085
90 Day Mean        20 Jul 074
V.  Geomagnetic A Indices
Observed Afr/Ap 19 Jul  002/004
Estimated Afr/Ap 20 Jul  004/005
Predicted Afr/Ap 21 Jul-23 Jul  005/007-007/008-010/010
VI.  Geomagnetic Activity Probabilities 21 Jul-23 Jul
A.  Middle Latitudes
Active                05/15/20
Minor storm           01/01/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                05/20/25
Minor storm           01/05/15
Major-severe storm    01/01/05