Joint USAF/NOAA Report of Solar and Geophysical Activity 30 May 2012

:Product: Report of Solar-Geophysical Activity
:Issued: 2012 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 151 Issued at 2200Z on 30 May 2012
IA. Analysis of Solar Active Regions and Activity from 29/2100Z
to 30/2100Z: Solar activity was low during the past 24 hours. A C1
x-ray event was observed at 30/0850Z from a region around the east
limb. All spot groups on the disk remained relatively quiet and
stable. No Earth-directed CME’s were observed during the period.
IB. Solar Activity Forecast: Solar activity is expected to be very
low to low with C-class activity likely for the next three days (31
May – 02 June).
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z:
The geomagnetic field was quiet for the past 24 hours.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be mostly quiet for the next three days (31 May – 02
June).
III. Event Probabilities 31 May-02 Jun
Class M 01/05/05
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 30 May 111
Predicted 31 May-02 Jun 110/110/110
90 Day Mean 30 May 117
V. Geomagnetic A Indices
Observed Afr/Ap 29 May 005/005
Estimated Afr/Ap 30 May 007/007
Predicted Afr/Ap 31 May-02 Jun 004/005-004/005-004/005
VI. Geomagnetic Activity Probabilities 31 May-02 Jun
A. Middle Latitudes
Active 05/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor storm 15/15/15
Major-severe storm 05/05/05