Joint USAF/NOAA Report of Solar and Geophysical Activity 21 August 2010

:Product: Report of Solar-Geophysical Activity
:Issued: 2010 Aug 21 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 233 Issued at 2200Z on 21 Aug 2010
IA. Analysis of Solar Active Regions and Activity from 20/2100Z
to 21/2100Z: Solar activity was very low. No flares were observed
during the period. No new regions were numbered.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 20/2100Z to 21/2100Z:
The geomagnetic field was at quiet levels during the period.
IIB. Geophysical Activity Forecast: The geomagnetic field activity
is expected to be at quiet levels until late on day three (24
August). Active to minor storm levels are expected late on day three
due to a coronal hole high-speed stream.
III. Event Probabilities 22 Aug-24 Aug
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 21 Aug 077
Predicted 22 Aug-24 Aug 076/076/078
90 Day Mean 21 Aug 077
V. Geomagnetic A Indices
Observed Afr/Ap 20 Aug 001/004
Estimated Afr/Ap 21 Aug 002/005
Predicted Afr/Ap 22 Aug-24 Aug 005/005-005/005-007/008
VI. Geomagnetic Activity Probabilities 22 Aug-24 Aug
A. Middle Latitudes
Active 05/05/15
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 01/01/01