:Product: 0410RSGA.txt
:Issued: 2010 Apr 10 2201 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
#
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 100 Issued at 2200Z on 10 Apr 2010
IA.  Analysis of Solar Active Regions and Activity from  09/2100Z
to 10/2100Z:  Solar activity has been very low.  No flares were
observed during the period.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 09/2100Z to 10/2100Z:
The geomagnetic field has been quiet.  The ACE spacecraft observed a
continued decline in the solar wind speed, averaging 375 km/s.  The
greater than 2 MeV electron flux at geosynchronous orbit reached
high levels today.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be quiet for day one (11 April).  Quiet to unsettled
conditions, with isolated active periods, are expected on day two
and three (12-13 April).  This activity is expected due to the 08
April full halo CME.
III.  Event Probabilities 11 Apr-13 Apr
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       green
IV.  Penticton 10.7 cm Flux
Observed           10 Apr 075
Predicted   11 Apr-13 Apr  075/075/075
90 Day Mean        10 Apr 083
V.  Geomagnetic A Indices
Observed Afr/Ap 09 Apr  004/006
Estimated Afr/Ap 10 Apr  002/003
Predicted Afr/Ap 11 Apr-13 Apr  005/005-010/012-008/010
VI.  Geomagnetic Activity Probabilities 11 Apr-13 Apr
A.  Middle Latitudes
Active                01/15/15
Minor storm           01/05/05
Major-severe storm    01/01/01
B.  High Latitudes
Active                01/25/20
Minor storm           01/10/05
Major-severe storm    01/01/01