Joint USAF/NOAA Report of Solar and Geophysical Activity 16 December 2009

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Dec 06 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 340 Issued at 2200Z on 06 Dec 2009
IA. Analysis of Solar Active Regions and Activity from 05/2100Z
to 06/2100Z: Solar activity was very low. No flares were observed
during the past 24 hours. The visible solar disk is spotless.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 05/2100Z to 06/2100Z:
The geomagnetic field was quiet. The ACE spacecraft solar wind
observations show velocities have steadily decreased through the
period from around 430-375 km/s.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be at quiet levels for the next three days (07-09
December).
III. Event Probabilities 07 Dec-09 Dec
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 06 Dec 072
Predicted 07 Dec-09 Dec 073/073/073
90 Day Mean 06 Dec 072
V. Geomagnetic A Indices
Observed Afr/Ap 05 Dec 003/003
Estimated Afr/Ap 06 Dec 001/005
Predicted Afr/Ap 07 Dec-09 Dec 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 07 Dec-09 Dec
A. Middle Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01