Joint USAF/NOAA Report of Solar and Geophysical Activity 26 December 2010

:Product: Report of Solar-Geophysical Activity
:Issued: 2010 Dec 26 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 360 Issued at 2200Z on 26 Dec 2010
IA. Analysis of Solar Active Regions and Activity from 25/2100Z
to 26/2100Z: Solar activity was very low. Regions 1136 (S22W71) and
1137 (N18E10) remained stable with little change. No significant
x-ray events were observed during the period.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z:
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be at quiet to unsettled levels for day one (27
December) due to possible effects from the CME observed on 23
December. Quiet conditions are expected for days two and three
(28-29 December).
III. Event Probabilities 27 Dec-29 Dec
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 26 Dec 081
Predicted 27 Dec-29 Dec 080/082/082
90 Day Mean 26 Dec 083
V. Geomagnetic A Indices
Observed Afr/Ap 25 Dec 004/005
Estimated Afr/Ap 26 Dec 003/003
Predicted Afr/Ap 27 Dec-29 Dec 007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 27 Dec-29 Dec
A. Middle Latitudes
Active 10/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 20/05/05
Minor storm 05/01/01
Major-severe storm 01/01/01