[Ips-dhfpr] SWS Daily HF Prop Report - 12 October 17 issued 2330 UT on 12 Oct 2017 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 OCTOBER 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 OCTOBER) 
Date   T index  Conditions    
12 Oct    -7    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
      Depressed by 20% 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      20
Oct      5
Nov      4


2. FORECAST (13 OCTOBER - 15 OCTOBER)
Date   T index  Conditions       MUFs                              
13 Oct   -15    Fair-poor        20 to 30% below predicted monthly 
                                 values
14 Oct   -15    Fair-poor        20 to 30% below predicted monthly 
                                 values    
15 Oct   -10    Fair-poor        10 to 20% below predicted monthly 
                                 values   

COMMENT: MUF depressions were observed over the last 24 hours 
in the Australian/NZ region in response to the recent Active 
to Minor Storm geomagnetic conditions associated with the passage 
of a coronal hole. MUFs in the Australian/NZ region are expected 
to be remain depressed for the next three UT days. These depressions 
are the aftermath of the observed Active to Minor Storm conditions 
on 11-12 October.

----------------------------------------------------------
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
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
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