[Ips-dhfpr] SWS Daily HF Prop Report - 15 December 16 issued 2330 UT on 15 Dec 2016 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 DECEMBER 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 DECEMBER) 
Date   T index  Conditions    
15 Dec   -22    Poor-fair      

Flares: B class flares

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   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:
      Depressed by 25% during local day.
      Depressed by 30% during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Nov      3
Dec      24
Jan      23


2. FORECAST (16 DECEMBER - 18 DECEMBER)
Date   T index  Conditions       MUFs                              
16 Dec   -12    Poor-fair        0 to 25% below predicted monthly 
                                 values
17 Dec    -5    Poor-fair        0 to 20% below predicted monthly 
                                 values    
18 Dec     0    Fair-normal      0 to 20% below predicted monthly 
                                 values   

COMMENT: Conditions for HF radio wave propagation were depressed 
throughout the Australian region during 15 Dec UT. Local daily 
T indices ranged between -43 at Norfolk Island and +2 at Perth. 
Depressed conditions are likely to continue in coming days. Lowering 
the operating frequency to maintain contact may result in propagation 
via sporadic E layers when present.

----------------------------------------------------------
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
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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