Report of Solar-Geophysical Activity

Issued: 2010 Dec 27 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 361 Issued at 2200Z on 27 Dec 2010

IA.  Analysis of Solar Active Regions and Activity from  26/2100Z
to 27/2100Z:  Solar activity was very low. New Region 1138 (N13W12)
was numbered during the period as a Dao bi-polar group and produced
several B-class events. Regions 1136 (S22W84) and 1137 (N18E00) were
spotless.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low for the next three days (28 - 30 December) with a slight chance
of C-class activity from the Region 1138.
IIA.  Geophysical Activity Summary 26/2100Z to 27/2100Z:
The geomagnetic field was quiet.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet for the next three days (28 - 30 December).
III.  Event Probabilities 28 Dec-30 Dec
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           27 Dec 080
Predicted   28 Dec-30 Dec  082/082/084
90 Day Mean        27 Dec 083
V.  Geomagnetic A Indices
Observed Afr/Ap 26 Dec  002/002
Estimated Afr/Ap 27 Dec  003/002
Predicted Afr/Ap 28 Dec-30 Dec  005/005-005/005-005/005
VI.  Geomagnetic Activity Probabilities 28 Dec-30 Dec
A.  Middle Latitudes
Active                05/05/05
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                10/10/10
Minor storm           01/01/01
Major-severe storm    01/01/01

NOAA Space Weather Scale descriptions can be found at www.sec.noaa.gov/NOAAscales