[Ips-dhfpr] IPS Daily HF Prop Report - 21 September 15 issued 2332 UT on 21 Sep 2015
rwc
rwc at ips.gov.au
Tue Sep 22 09:32:48 EST 2015
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 SEPTEMBER 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 SEPTEMBER)
Date T index Conditions
21 Sep 12 Normal-poor
Flares: none.
MUFs:
Cocos Island Region:
Depressed by 20% during local day.
Depressed by 40% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Depressed by 25% after local dawn.
Northern Australian Region:
Depressed by 35% during local day.
Depressed by 25% during local night.
Depressed by 30% after local dawn.
Southern Australian Region:
Depressed by 40% during local day.
Depressed by 45% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 20% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Aug 46
Sep 75
Oct 73
2. FORECAST (22 SEPTEMBER - 24 SEPTEMBER)
Date T index Conditions MUFs
22 Sep 20 Fair 20 to 30% below predicted monthly
values
23 Sep 20 Fair 20 to 30% below predicted monthly
values
24 Sep 30 Fair 20 to 30% below predicted monthly
values
COMMENT: IPS SWF HF Communications Warning 56 was issued on 21
September and is current for 21-22 Sep. IPS HF Communications
Warning 57 was issued on 21 September and is current for 22-24
Sep. Degraded HF conditions were observed during 21 September
over the Australian region due to low levels of ionising radiation
and renewed elevated geomagnetic activity levels. Similar HF
conditions are expected for the next few days. Antarctic region
may be particularly affected by anticipated elevated geomagnetic
activity later on day one.
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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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