:Product: Report of Solar-Geophysical Activity
:Issued: 2010 May 31 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 151 Issued at 2200Z on 31 May 2010
IA.  Analysis of Solar Active Regions and Activity from  30/2100Z
to 31/2100Z:  Solar activity was very low.  New Region 1076 (S19E07)
was numbered today and is a beta magnetic classification.  No flares
were observed during the past 24 hours.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 30/2100Z to 31/2100Z:
The geomagnetic field was at quiet to active levels with one
reporting period at 30/2100Z of minor storm conditions. 
Observations from the ACE spacecraft indicate the continued
influence from the coronal hole high speed stream.  Solar wind
speeds have increased through the period from 500 km/s to above 600
km/s with IMF Bz fluctuations of +/- 6 nT.  The greater than 2 MeV
electron flux at geosynchronous orbit was at high levels today.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be predominantly unsettled with isolated active
conditions for the next three days (01-03 June) due to the coronal
hole high speed stream.
III.  Event Probabilities 01 Jun-03 Jun
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           31 May 072
Predicted   01 Jun-03 Jun  072/072/072
90 Day Mean        31 May 078
V.  Geomagnetic A Indices
Observed Afr/Ap 30 May  014/019
Estimated Afr/Ap 31 May  016/022
Predicted Afr/Ap 01 Jun-03 Jun  010/010-008/010-008/008
VI.  Geomagnetic Activity Probabilities 01 Jun-03 Jun
A.  Middle Latitudes
Active                20/15/15
Minor storm           05/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                25/25/20
Minor storm           10/05/01
Major-severe storm    01/01/01