[Ips-dhfpr] SWS Daily HF Prop Report - 20 November 18 issued 2330 UT on 20 Nov 2018 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 NOVEMBER 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 NOVEMBER) 
Date   T index  Conditions    
20 Nov   -25    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Depressed by 35% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% 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
Oct      -17
Nov      -7
Dec      -7


2. FORECAST (21 NOVEMBER - 23 NOVEMBER)
Date   T index  Conditions       MUFs                              
21 Nov   -30    Normal-fair      Depressed 10 to 30%/near predicted 
                                 monthly values
22 Nov   -30    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%    
23 Nov   -30    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%   

COMMENT: SWS HF Communications Warning 17 was issued on 20 November 
and is current for 20-22 Nov. Northern AUS and Southern AUS/NZ 
regions MUFs ranged from minor depressions to near predicted 
monthly values during 20 Nov. MUFs depressions ranging between 
10%-40% during local day for Niue Island. Similar levels of ionospheric 
support expected for the next 3 days due to continued very low 
levels of ionising radiation from the Sun and current weak geomagnetic 
activity.

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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
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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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