Joint USAF/NOAA Report of Solar and Geophysical Activity 27 Nov 2009

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Nov 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 331 Issued at 2200Z on 27 Nov 2009
IA. Analysis of Solar Active Regions and Activity from 26/2100Z
to 27/2100Z: Solar activity was very low. The visible disk remains
spotless. No flares were observed during the past 24 hours.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z:
The geomagnetic field was quiet. The ACE spacecraft show solar wind
velocities averaging around 350 km/s.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for the next three days (28-30 November).
III. Event Probabilities 28 Nov-30 Nov
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF Green
IV. Penticton 10.7 cm Flux
Observed 27 Nov 074
Predicted 28 Nov-30 Nov 071/070/070
90 Day Mean 27 Nov 072
V. Geomagnetic A Indices
Observed Afr/Ap 26 Nov 003/006
Estimated Afr/Ap 27 Nov 002/003
Predicted Afr/Ap 28 Nov-30 Nov 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 28 Nov-30 Nov
A. Middle Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01