Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 23 December 2010

By SpaceRef Editor
December 23, 2010
Filed under , , ,

:Product: Report of Solar-Geophysical Activity
:Issued: 2010 Dec 23 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 357 Issued at 2200Z on 23 Dec 2010
IA. Analysis of Solar Active Regions and Activity from 22/2100Z
to 23/2100Z: Solar activity was very low. A partial halo CME was
observed off the southwest quadrant of the sun on the SOHO/LASCO C2
imagery around 23/0736Z. The event was also observed on C3 and
STEREO ahead/behind COR2 imagery. The source of the event is a
possible disappearing filament just transiting around the visible
disk in the southwest.
IB. Solar Activity Forecast: Solar activity is expected to be very
IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z:
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for day one (24 December). Quiet to slightly
unsettled levels are expected for day two (25 December) due to a
solar sector boundary crossing. Mostly quiet conditions are
expected to return for day three (26 December).
III. Event Probabilities 24 Dec-26 Dec
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 23 Dec 080
Predicted 24 Dec-26 Dec 078/078/080
90 Day Mean 23 Dec 083
V. Geomagnetic A Indices
Observed Afr/Ap 22 Dec 001/000
Estimated Afr/Ap 23 Dec 001/005
Predicted Afr/Ap 24 Dec-26 Dec 005/005-007/007-005/005
VI. Geomagnetic Activity Probabilities 24 Dec-26 Dec
A. Middle Latitudes
Active 05/10/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 05/15/05
Minor storm 01/05/01
Major-severe storm 01/01/01

SpaceRef staff editor.