Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 29 May 2012

By SpaceRef Editor
May 29, 2012
Filed under , ,

:Product: Report of Solar-Geophysical Activity
:Issued: 2012 May 29 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 29 May 2012
IA. Analysis of Solar Active Regions and Activity from 28/2100Z
to 29/2100Z: Solar activity was very low during the past 24 hours.
Region 1492 (S13E18) remained the largest spot group on the disk,
but showed decay and did not produce any notable events. All other
regions on the disk were quiet and stable. No Earth-directed CMEs
were observed during the period.
IB. Solar Activity Forecast: Solar activity is expected to remain
very low with C-class events likely for the next three days (30 May
– 01 June).
IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z:
The geomagnetic field was mostly quiet during the past 24 hours. 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 mostly quiet for the next three days (30 May – 01
III. Event Probabilities 30 May-01 Jun
Class M 01/01/05
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 29 May 106
Predicted 30 May-01 Jun 105/105/105
90 Day Mean 29 May 117
V. Geomagnetic A Indices
Observed Afr/Ap 28 May 003/005
Estimated Afr/Ap 29 May 005/006
Predicted Afr/Ap 30 May-01 Jun 004/005-004/005-004/005
VI. Geomagnetic Activity Probabilities 30 May-01 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

SpaceRef staff editor.