[Ips-dhfpr] SWS Daily HF Prop Report - 18 November 19 issued 2331 UT on 18 Nov 2019

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 NOVEMBER 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 NOVEMBER) 
Date   T index  Conditions    
18 Nov   -37    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   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      -20
Nov      -16
Dec      -17


2. FORECAST (19 NOVEMBER - 21 NOVEMBER)
Date   T index  Conditions       MUFs                              
19 Nov   -30    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%
20 Nov   -35    Normal-fair      Near predicted monthly values/depressed 
                                 20 to 30%    
21 Nov   -40    Fair             Near predicted monthly values/depressed 
                                 20 to 40%   

COMMENT: Variable HF conditions were observed over the AUS/NZ 
region for UT day 18 November with maximum usable frequencies 
(MUFs) ranging from near predicted monthly values to moderately 
depressed for Equatorial and Northern AUS regions. MUFs stayed 
near predicted monthly values for Southern AUS/NZ and Antarctic 
regions during this day. Similar ionospheric support is expected 
for UT day 19 November. Further MUF depressions may be observed 
through UT days 20 and 21 November due to expected enhancements 
in geomagnetic activity levels on these days.

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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
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