:Product: 0530RSGA.txt
:Issued: 2010 May 30 2200 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 150 Issued at 2200Z on 30 May 2010
IA.  Analysis of Solar Active Regions and Activity from  29/2100Z
to 30/2100Z:  Solar activity was very low.  Region 1073 (N13E21),
1074 (N17W72), and 1075 (S20W16) have remained stable with no
significant change.  No flares were observed during the period.
IB.  Solar Activity Forecast:  Solar activity is expected to be very
low.
IIA.  Geophysical Activity Summary 29/2100Z to 30/2100Z:
The geomagnetic field was quiet to active.  Observations from the ACE
spacecraft indicate the arrival of a coronal hole high speed stream
around 30/1530Z.  The solar wind speed increased to an average of
500 km/s with the IMF Bz starting a southward trend averaging around
-8 nT.  The greater than 2 MeV electron flux at geosynchronous orbit
reached high levels during the period.
IIB.  Geophysical Activity Forecast:  The geomagnetic field is
expected to be at unsettled to active levels, with possible isolated
minor storm conditions, for the next two days (31 May-01 June) due
to the continued influence from the coronal hole high speed stream. 
Quiet to unsettled conditions are expected for day three (02 June).
III.  Event Probabilities 31 May-02 Jun
Class M    01/01/01
Class X    01/01/01
Proton     01/01/01
PCAF       Green
IV.  Penticton 10.7 cm Flux
Observed           30 May 073
Predicted   31 May-02 Jun  074/073/072
90 Day Mean        30 May 078
V.  Geomagnetic A Indices
Observed Afr/Ap 29 May  015/033
Estimated Afr/Ap 30 May  015/035
Predicted Afr/Ap 31 May-02 Jun  015/025-010/015-008/008
VI.  Geomagnetic Activity Probabilities 31 May-02 Jun
A.  Middle Latitudes
Active                30/25/20
Minor storm           05/01/01
Major-severe storm    01/01/01
B.  High Latitudes
Active                40/35/25
Minor storm           10/05/05
Major-severe storm    01/01/01