[Ips-dhfpr] ASWFC Daily HF Prop Report - 24 December 23 issued 2330 UT on 24 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 DECEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 DECEMBER) 
Date   T index  Conditions    
24 Dec   126    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.9    1118UT  possible   lower  European
  M2.6    1649UT  possible   lower  South American/
                                    Atlantic
  M1.1    1951UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values 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 (25 DECEMBER - 27 DECEMBER)
Date   T index  Conditions       MUFs                              
25 Dec   115    Normal           Near predicted monthly values
26 Dec   115    Normal           Near predicted monthly values    
27 Dec   115    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 133 was issued on 
24 December and is current for 24-26 Dec. Maximum usable frequencies 
(MUFs) on UT day 24-Dec in the Australian region were near predicted 
monthly values, with enhancements of up to 15% observed in the 
northern Australian region during local day. Sporadic E obscured 
the foF2 at Canberra at times between 24/0300UT and 24/0900UT. 
MUFs are expected to be near predicted monthly values over 25-27 
Dec, with the possibility of further periods of sporadic E. 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