NOAA SEC Report of Solar-Geophysical Activity 29 May 2001
:Product: Report of Solar-Geophysical Activity
:Issued: 2001 May 29 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 149 Issued at 2200Z on 29 May 2001
IA. Analysis of Solar Active Regions and Activity from 28/2100Z
to 29/2100Z: Solar activity has been low. Region 9475 (N18E34)
produced the only minor C-class events. This region has doubled its
growth since yesterday with an area of 100 millionths and has
developed a delta configuration within the trailing portion of the
spot group.
IB. Solar Activity Forecast: Solar activity is expected to be low.
Additional C-class flares are likely.
IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z:
The geomagnetic field has been quiet to active.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet to unsettled for the forecast period.
III. Event Probabilities 30 May-01 Jun
Class M 20/20/20
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 29 May 139
Predicted 30 May-01 Jun 135/135/135
90 Day Mean 29 May 169
V. Geomagnetic A Indices
Observed Afr/Ap 28 May 014/018
Estimated Afr/Ap 29 May 010/012
Predicted Afr/Ap 30 May-01 Jun 008/010-008/010-008/010
VI. Geomagnetic Activity Probabilities 30 May-01 Jun
A. Middle Latitudes
Active 15/15/15
Minor storm 05/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 20/20/20
Minor storm 05/05/05
Major-severe storm 01/01/01