NOAA SEC Report of Solar-Geophysical Activity 30 Oct 2001
:Product: Report of Solar-Geophysical Activity
:Issued: 2001 Oct 30 2200 UT
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
#Space Environment Center and the U.S. Air Force.
#
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 303 Issued at 2200Z on 30 Oct 2001
IA. Analysis of Solar Active Regions and Activity from 29/2100Z
to 30/2100Z: Solar activity has been moderate. Region 9682 (N12E04)
has continued to produce high C-class and low M-class events during
the period. The largest was an M3/1n at 30/0836 UTC. The region
continues to grow in area, sunspot count, and magnetic complexity.
A long duration C9 event occurred at 30/2032 UTC. SXI images
indicate the possible source being a CME from behind the southeast
limb of the sun.
IB. Solar Activity Forecast: Solar activity is expected to be low
to moderate. A major flare is possible from Region 9682.
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z:
The geomagnetic field has been quiet to unsettled.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet to unsettled.
III. Event Probabilities 31 Oct-02 Nov
Class M 80/80/80
Class X 35/35/35
Proton 15/15/15
PCAF yellow
IV. Penticton 10.7 cm Flux
Observed 30 Oct 226
Predicted 31 Oct-02 Nov 205/200/195
90 Day Mean 30 Oct 202
V. Geomagnetic A Indices
Observed Afr/Ap 29 Oct 018/016
Estimated Afr/Ap 30 Oct 008/008
Predicted Afr/Ap 31 Oct-02 Nov 008/008-010/015-008/012
VI. Geomagnetic Activity Probabilities 31 Oct-02 Nov
A. Middle Latitudes
Active 20/25/20
Minor storm 05/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 25/30/30
Minor storm 10/10/10
Major-severe storm 01/01/01