[Ips-dhfpr] SWS Daily HF Prop Report - 05 December 21 issued 2331 UT on 05 Dec 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 DECEMBER 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 DECEMBER) 
Date   T index  Conditions    
05 Dec    17    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.4    0719UT  possible   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% 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
Nov      3
Dec      33
Jan      36


2. FORECAST (06 DECEMBER - 08 DECEMBER)
Date   T index  Conditions       MUFs                              
06 Dec    15    Normal-fair      Near Depressed 30%/near predicted 
                                 monthly values
07 Dec    18    Normal           Near Depressed 20%/near predicted 
                                 monthly values    
08 Dec    20    Normal           Near predicted monthly values   

COMMENT: MUFs in the Australian region on UT day 05 December 
were generally near predicted monthly values to mildly depressed. 
Some periods of minor enhancements were also observed. An M-class 
flare also resulted in a shortwave fadeout event between Australian 
and African regions. Near predicted monthly values to moderate 
depressions are expected on 06 December in the Australian region. 
Mostly normal HF conditions, with the possibility of minor MUF 
depression periods, may be expected in the region on 07 December 
and mostly normal condition on 08 December.

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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
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