Joint USAF/NOAA Report of Solar and Geophysical Activity 20 December 2010

:Product: Report of Solar-Geophysical Activity
:Issued: 2010 Dec 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 354 Issued at 2200Z on 20 Dec 2010
IA. Analysis of Solar Active Regions and Activity from 19/2100Z
to 20/2100Z: Solar activity was very low. The visible disk remained
spotless.
IB. Solar Activity Forecast: Solar activity is expected to be very
low for the next three days (21-23 December).
IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z:
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for the next three days (21-23 December).
III. Event Probabilities 21 Dec-23 Dec
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 20 Dec 078
Predicted 21 Dec-23 Dec 078/078/076
90 Day Mean 20 Dec 083
V. Geomagnetic A Indices
Observed Afr/Ap 19 Dec 002/001
Estimated Afr/Ap 20 Dec 007/007
Predicted Afr/Ap 21 Dec-23 Dec 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 Dec-23 Dec
A. Middle Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 10/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01