[Ips-dhfpr] SWS Daily HF Prop Report - 27 October 16 issued 2330 UT on 27 Oct 2016 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/27 OCTOBER 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 OCTOBER) 
Date   T index  Conditions    
27 Oct   -15    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 30% during local day.
      Depressed by 45% during local night.
   Niue Island Region:
      Enhanced by 60% during local day.
      Enhanced by 50% during local night.
   Northern Australian Region:
      Depressed by 40% during local day.
      Depressed by 30% during local night.
   Southern Australian Region:
      Depressed by 25% during local day.
      Depressed by 25% 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      30
Oct      30
Nov      30


2. FORECAST (28 OCTOBER - 30 OCTOBER)
Date   T index  Conditions       MUFs                              
28 Oct   -10    Fair             10 to 40% below predicted monthly 
                                 values
29 Oct   -10    Normal-fair      10 to 30% below predicted monthly 
                                 values    
30 Oct    10    Normal           10 to 20% below predicted monthly 
                                 values   

COMMENT: SWS HF Communications Warning 49 was issued on 27 October 
and is current for 28-30 Oct. Mildly depressed to depressed MUFs 
were observed for the UT day, 27 October, in the Aus/NZ region. 
Current depressions are associated with low levels of ionising 
radiation and geomagnetic activity resulting in ionospheric storming. 
Expect these conditions to prevail for the next three days with 
some degradation in HF communication. Note there were periods 
of sporadic E observed in the Australian region.

----------------------------------------------------------
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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