Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 28 November 2010

By SpaceRef Editor
November 28, 2010
Filed under , , ,

:Product: Report of Solar-Geophysical Activity
:Issued: 2010 Nov 28 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 332 Issued at 2200Z on 28 Nov 2010
IA. Analysis of Solar Active Regions and Activity from 27/2100Z
to 28/2100Z: Solar activity has been very low. New Regions 1129
(S25W76) a Bxo-Beta type spot group and Region 1130 (N13E00), a
Csi-Beta type spot group, were numbered today. Region 1130 produced
a B2 x-ray event at 28/1754Z.
IB. Solar Activity Forecast: Solar activity is expected to be very
low with a chance of isolated C-class events from Region 1130 for
the next three days (29 November – 01 December).
IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field has been quiet to unsettled due to a recurrent
coronal hole high speed stream. Observations from the ACE
spacecraft indicated solar wind speeds reached approximately 500
km/s during the period.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be predominately quiet to unsettled with a slight chance
for isolated active periods during the next three days (29
November-01 December). The activity is forecast due to a recurrent
coronal hole high speed stream becoming geoeffective.
III. Event Probabilities 29 Nov-01 Dec
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 28 Nov 080
Predicted 29 Nov-01 Dec 080/080/080
90 Day Mean 28 Nov 081
V. Geomagnetic A Indices
Observed Afr/Ap 27 Nov 005/012
Estimated Afr/Ap 28 Nov 007/010
Predicted Afr/Ap 29 Nov-01 Dec 006/007-007/007-007/007
VI. Geomagnetic Activity Probabilities 29 Nov-01 Dec
A. Middle Latitudes
Active 10/10/10
Minor storm 01/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 10/15/15
Minor storm 05/05/05
Major-severe storm 01/01/01

SpaceRef staff editor.