:Product: 0428RSGA.txt
:Issued: 2006 Apr 28 2203 UTC
# 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 118 Issued at 2200Z on 28 Apr 2006
IA.  Analysis of Solar Active Regions and Activity from  27/2100Z
to 28/2100Z:  Solar activity was low.  Region 875 (S11E06) produced a
C1 flare at 28/0826Z.
IB.  Solar Activity Forecast:  Solar activity is expected to be low
with a slight chance of M-class activity from Region 875.
IIA.  Geophysical Activity Summary 27/2100Z to 28/2100Z:
The geomagnetic field was quiet to unsettled with one major storm
period from 0600 - 0900 UTC following a discontinuity in the solar
wind.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet to unsettled for the next three days (29 April
- 01 May).
III.  Event Probabilities 29 Apr-01 May
Class M    20/20/20
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           28 Apr 100
Predicted   29 Apr-01 May  100/100/100
90 Day Mean        28 Apr 080
V.  Geomagnetic A Indices
Observed Afr/Ap 27 Apr  003/005
Estimated Afr/Ap 28 Apr  014/015
Predicted Afr/Ap 29 Apr-01 May  005/007-005/007-005/007
VI.  Geomagnetic Activity Probabilities 29 Apr-01 May
A.  Middle Latitudes
Active                10/10/10
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                15/15/15
Minor storm           05/05/05
Major-severe storm    01/01/01