[Ips-dhfpr] ASWFC Daily HF Prop Report - 02 December 25 issued 2330 UT on 02 Dec 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/02 DECEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (02 DECEMBER) 
Date   T index  Conditions    
02 Dec   128    Normal         

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Nov      103
Dec      89
Jan      89


2. FORECAST (03 DECEMBER - 05 DECEMBER)
Date   T index  Conditions       MUFs                              
03 Dec   115    Normal           Near to 15% above predicted 
                                 monthly values
04 Dec   100    Normal           Near predicted monthly values    
05 Dec    95    Fair-normal      Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 114 was issued on 
2 December and is current for 2-4 Dec. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 02-Dec were up to 15% 
enhanced. Niue, Norfolk, Canberra and Hobart, experienced extended 
periods of sporadic-E. MUFs are forecast to continue to be up 
to 15% enhanced on the 03-Dec. MUFs are forecast to be near monthly 
predicted values over 04-05 Dec, due to anticipated geomagnetic 
activity. Shortwave fadeouts are probable on daylight HF circuits.

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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