Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 27 Aug 2009

By SpaceRef Editor
August 28, 2009
Filed under , , ,

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Aug 27 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 239 Issued at 2200Z on 27 Aug 2009
IA. Analysis of Solar Active Regions and Activity from 26/2100Z
to 27/2100Z: Solar activity was very low. No flares were detected.
The visible disk was spotless.
IB. Solar Activity Forecast: Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z:
Geomagnetic field activity was quiet.
IIB. Geophysical Activity Forecast: Geomagnetic field activity is
expected to be quiet to unsettled on day one (28 August) due to
effects from a coronal hole. Quiet conditions are expected on days
two and three (29 – 30 August).
III. Event Probabilities 28 Aug-30 Aug
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 27 Aug 068
Predicted 28 Aug-30 Aug 068/068/068
90 Day Mean 27 Aug 068
V. Geomagnetic A Indices
Observed Afr/Ap 26 Aug 004/004
Estimated Afr/Ap 27 Aug 007/005
Predicted Afr/Ap 28 Aug-30 Aug 007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 28 Aug-30 Aug
A. Middle Latitudes
Active 15/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 20/05/05
Minor storm 01/01/01
Major-severe storm 01/01/01

SpaceRef staff editor.