[Ips-dhfpr] SWS Daily HF Prop Report - 07 November 18 issued 2330 UT on 07 Nov 2018 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 NOVEMBER 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 NOVEMBER) 
Date   T index  Conditions    
07 Nov   -34    Normal         

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Oct      -17
Nov      -7
Dec      -7


2. FORECAST (08 NOVEMBER - 10 NOVEMBER)
Date   T index  Conditions       MUFs                              
08 Nov   -20    Normal           Near predicted monthly values/depressed 
                                 5 to 20%
09 Nov   -20    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 20%    
10 Nov   -20    Normal           Near predicted monthly values/depressed 
                                 10 to 30%   

COMMENT: SWS HF Communications Warning 13 was issued on 7 November 
and is current for 8-10 Nov. MUFs were depressed by 15-20% over 
much of the Australian and Antarctic regions during UT day, 07 
November, due to continued very low levels of ionising radiation. 
Expect near predicted MUFs to 20% depressions on 08-09 November 
due to continued very low levels of ionising radiation. On 10 
November expect deeper depressions to 30% and some degradation 
in HF communication induced by an increase in geomagnetic activity 
on 09 November leading to ionospheric storming.

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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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