[Ips-dhfpr] SWS Daily HF Prop Report - 26 October 16 issued 2330 UT on 26 Oct 2016 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Thu Oct 27 10:30:40 EST 2016
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 OCTOBER 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (26 OCTOBER)
Date T index Conditions
26 Oct -18 Fair-poor
Flares: none.
MUFs:
Cocos Island Region:
Depressed by 35% during local day.
Depressed by 40% during local night.
Niue Island Region:
Mostly near predicted monthly values.
Depressed by 20% after local dawn.
Northern Australian Region:
Depressed by 40% during local day.
Near predicted monthly values during local night.
Depressed by 35% after local dawn.
Southern Australian Region:
Depressed by 35% during local day.
Depressed by 35% during local night.
Depressed by 30% after local dawn.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 20% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Sep 30
Oct 30
Nov 30
2. FORECAST (27 OCTOBER - 29 OCTOBER)
Date T index Conditions MUFs
27 Oct -20 Fair-poor 20 to 40% below predicted monthly
values
28 Oct -20 Fair 20 to 40% below predicted monthly
values
29 Oct -10 Normal-fair 10 to 30% below predicted monthly
values
COMMENT: SWS HF Communications Warning 48 was issued on 24 October
and is current for 25-27 Oct. Mildly depressed to depressed MUFs
were observed for the UT day, 26 October, in the Aus/NZ region.
Current depressions are associated with low levels of ionising
radiation and a rise in geomagnetic activity resulting in ionospheric
storming. Expect these conditions to prevail for the next couple
days with some degradation in HF communication. Note there were
periods of sporadic E observed in the Australian region.
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For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
Space Weather Services email: asfc at bom.gov.au
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