[Ips-dhfpr] ASWFC Daily HF Prop Report - 04 December 23 issued 2330 UT on 04 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 DECEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 DECEMBER) 
Date   T index  Conditions    
04 Dec   132    Normal         

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Nov      114
Dec      100
Jan      98


2. FORECAST (05 DECEMBER - 07 DECEMBER)
Date   T index  Conditions       MUFs                              
05 Dec    90    Fair-normal      Depressed 10 to 15%/near predicted 
                                 monthly values
06 Dec    95    Fair-normal      Depressed 10 to 15%/near predicted 
                                 monthly values    
07 Dec   120    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) were near predicted 
monthly values to 20% enhanced in the Australian region on UT 
day 04-Dec. No significant overnight geomagnetic activity was 
observed on 04-Dec. MUFs are generally expected to be near predicted 
monthly values 05-07 Dec, with brief mild depressions possible 
after local dawn during 05-06 Dec. Isolated minor shortwave fadeouts 
are possible.

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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.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au