[Ips-dhfpr] SWS Daily HF Prop Report - 20 November 21 issued 2331 UT on 20 Nov 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 NOVEMBER 2021 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     1    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
      Depressed by 25% after local dawn.
   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      18
Nov      32
Dec      35


2. FORECAST (21 NOVEMBER - 23 NOVEMBER)
Date   T index  Conditions       MUFs                              
21 Nov    -5    Normal-fair      15 to 20% below predicted monthly 
                                 values
22 Nov    -5    Normal-fair      15 to 20% below predicted monthly 
                                 values    
23 Nov    -5    Normal-fair      15 to 20% below predicted monthly 
                                 values   

COMMENT: MUFs in the Australian region on UT day 20 November 
were mostly near predicted monthly values to 15% depressed, although 
there were some depressions to 35% before and after dawn. Spread 
F was observed at Hobart 10-18 UT and sporadic E at Perth 02-08 
UT, Niue 09-13 UT and Townsville 08-09 UT. Depressed conditions 
are expected to continue 21-23 November.

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
https://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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