Joint USAF/NOAA Report of Solar and Geophysical Activity 10 December 2009

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Dec 10 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 344 Issued at 2200Z on 10 Dec 2009
IA. Analysis of Solar Active Regions and Activity from 09/2100Z
to 10/2100Z: Solar activity was low. Today’s activity consisted of
a C3 x-ray event at 1057Z and a B1 x-ray event at 1452Z. Both
events originated from newly numbered Region 1034 (N20E59), a small
Bxo Beta group.
IB. Solar Activity Forecast: Solar activity is expected to be very
low to low. There is a chance for an isolated C-class event from
Region 1034 during the next three days (11-13 December).
IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z:
The geomagnetic field has been quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for the next three days (11-13 December).
III. Event Probabilities 11 Dec-13 Dec
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 10 Dec 074
Predicted 11 Dec-13 Dec 075/077/077
90 Day Mean 10 Dec 072
V. Geomagnetic A Indices
Observed Afr/Ap 09 Dec 000/000
Estimated Afr/Ap 10 Dec 001/001
Predicted Afr/Ap 11 Dec-13 Dec 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 11 Dec-13 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