NOAA SEC Report of Solar-Geophysical Activity 27 Feb 2001
:Product: Report of Solar-Geophysical Activity
:Issued: 2001 Feb 27 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 058 Issued at 2200Z on 27 Feb 2001
IA. Analysis of Solar Active Regions and Activity from 26/2100Z
to 27/2100Z: Solar activity was low. Three weak C-class X-ray
flares occurred during the period. An 11 degree filament (S16W09)
disappeared between 26/1545-27/1213 UTC. New Region 9363 (S20W15)
was numbered today.
IB. Solar Activity Forecast: Solar activity is expected to be low.
IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z:
The geomagnetic field was quiet to active.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet to unsettled for the next three days.
III. Event Probabilities 28 Feb-02 Mar
Class M 10/10/10
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 27 Feb 131
Predicted 28 Feb-02 Mar 130/130/135
90 Day Mean 27 Feb 164
V. Geomagnetic A Indices
Observed Afr/Ap 26 Feb 005/010
Estimated Afr/Ap 27 Feb 015/012
Predicted Afr/Ap 28 Feb-02 Mar 008/008-008/008-005/005
VI. Geomagnetic Activity Probabilities 28 Feb-02 Mar
A. Middle Latitudes
Active 20/20/15
Minor storm 05/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 25/25/20
Minor storm 10/10/05
Major-severe storm 01/01/01