Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 30 Dec 2009

By SpaceRef Editor
December 30, 2009
Filed under , , ,

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Dec 30 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 364 Issued at 2200Z on 30 Dec 2009
IA. Analysis of Solar Active Regions and Activity from 29/2100Z
to 30/2100Z: Solar activity was very low. Region 1039 (S27W08)
showed little change and maintained a D-type sunspot group and beta
magnetic classification. No flares were observed during the past 24
IB. Solar Activity Forecast: Solar activity is expected to be very
low to low. There is a slight chance of an isolated C-flare from
Region 1039.
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z:
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for the next three days (31 December – 02
III. Event Probabilities 31 Dec-02 Jan
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 30 Dec 077
Predicted 31 Dec-02 Jan 079/079/079
90 Day Mean 30 Dec 074
V. Geomagnetic A Indices
Observed Afr/Ap 29 Dec 000/000
Estimated Afr/Ap 30 Dec 001/005
Predicted Afr/Ap 31 Dec-02 Jan 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 31 Dec-02 Jan
A. Middle Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 05/05/10
Minor storm 01/01/01
Major-severe storm 01/01/01

SpaceRef staff editor.