:Product: 0418RSGA.txt
:Issued: 2006 Apr 18 2204 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 108 Issued at 2200Z on 18 Apr 2006
IA.  Analysis of Solar Active Regions and Activity from  17/2100Z
to 18/2100Z:  Solar activity remained at very low levels.  A small
filament eruption occurred early in the period and a related CME was
observed on LASCO imagery shortly there after.  The CME does not
appear to be Earth directed.  Region 874 (N00E15) was numbered
today.
IB.  Solar Activity Forecast:  Solar activity is expected to be at
very low levels.
IIA.  Geophysical Activity Summary 17/2100Z to 18/2100Z:
The geomagnetic field was at quiet to unsettled levels.  The greater
than 2 MeV electron flux at geosynchronous orbit reached very high
levels again today.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be at quiet to unsettled levels.
III.  Event Probabilities 19 Apr-21 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           18 Apr 074
Predicted   19 Apr-21 Apr  075/075/075
90 Day Mean        18 Apr 078
V.  Geomagnetic A Indices
Observed Afr/Ap 17 Apr  004/006
Estimated Afr/Ap 18 Apr  005/008
Predicted Afr/Ap 19 Apr-21 Apr  005/008-005/008-005/008
VI.  Geomagnetic Activity Probabilities 19 Apr-21 Apr
A.  Middle Latitudes
Active                15/15/15
Minor storm           01/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                20/20/20
Minor storm           05/05/05
Major-severe storm    01/01/01