[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 December 23 issued 2330 UT on 06 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 DECEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 DECEMBER) 
Date   T index  Conditions    
06 Dec    99    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.1    0541UT  possible   lower  E. Asia/Aust.
  M2.3    2144UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   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 (07 DECEMBER - 09 DECEMBER)
Date   T index  Conditions       MUFs                              
07 Dec    90    Normal-fair      Near predicted monthly values
08 Dec   100    Normal           Near predicted monthly values    
09 Dec   100    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 125 was issued on 
5 December and is current for 6-8 Dec. ASWFC Preliminary HF Communications 
Warning 127 was issued on 6 December and is current for 7-8 Dec. 
Maximum usable frequencies (MUFs) were near predicted monthly 
values in the Australian region on UT day 06-Dec. Sporadic E 
was observed overnight at Cocos Island. MUFs are expected to 
be near predicted monthly values over 07-09 Dec. 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