[Ips-dhfpr] IPS Daily HF Prop Report - 04 August 11
Regional Warning Centre
rwc at ips.gov.au
Fri Aug 5 09:56:29 EST 2011
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 04/2330Z AUGUST 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (04 AUGUST)
Date T index Conditions
04 Aug 34 Normal
Flares Max Fadeout Freq. Sectors
M9.3 0357UT probable lower E. Asia/Aust.
MUFs:
Cocos Island Region:
Depressed by 15% during local day,
Depressed by 30% during local night.
Depressed by 20% after local dawn.
Niue Island Region:
No data available.
Northern Australian Region:
Depressed by 20% during local day,
Depressed by 25% during local night.
Depressed by 20% after local dawn.
SWF's observed 04-05UT Townsville , Darwin, Learmonth.
Southern Australian and New Zealand Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
SWFs observed 04-05UT Norfolk Is., Brisbane, Sydney, Perth.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 20% over the UT day.
Proton event in progress, increased absorption observed.
PCA Event : 10Mev Proton/PCA Event Began 04 08 2011 0635UT and is in progress
Predicted Monthly T index for August: 59
2. FORECAST (05 AUGUST - 07 AUGUST)
Date T index Conditions MUFs
05 Aug 25 Normal-fair 20 to 40% below predicted monthly
values
06 Aug 30 Fair 10 to 30% below predicted monthly
values
07 Aug 30 Normal-fair 10 to 30% below predicted monthly
values
COMMENT: IPS HF Communications Warning 34 was issued on 3 August
and is current for interval 4-6 August (SWFs) . Significant MUF
depressions possible due to geomagnetic disturbance following
recent solar flare activity. SWF's possible.
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
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