[Ips-dhfpr] SWS Daily HF Prop Report - 05 December 17 issued 2330 UT on 05 Dec 2017 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 DECEMBER 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 DECEMBER) 
Date   T index  Conditions    
05 Dec   -21    Fair           

Flares: none.

MUFs:
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      No data available during local night.
   Southern Australian Region:
      Depressed by 25% during local day.
      Near predicted monthly values 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
Nov      -5
Dec      4
Jan      4


2. FORECAST (06 DECEMBER - 08 DECEMBER)
Date   T index  Conditions       MUFs                              
06 Dec   -25    Fair             Near predicted monthly values/depressed 
                                 10 to 40%
07 Dec   -20    Fair             Near predicted monthly values/depressed 
                                 10 to 30%    
08 Dec   -10    Normal           Near predicted monthly values   

COMMENT: SWS HF Communications Warning 52 was issued on 5 December 
and is current for 5-7 Dec. Minor to moderate MUF depressions 
were observed across Aus/NZ regions on UT day 5 December. Spread 
F and Sporadic E blanketing were observed at several low and 
mid latitude locations. Minor to moderate MUF depressions are 
likely to be observed in the Aus/NZ regions during the next three 
days (6 to 7 December). HF conditions may return to more normal 
levels in this region on 8 December.

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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
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
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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