[Ips-dhfpr] ASWFC Daily HF Prop Report - 01 January 26 issued 2335 UT on 01 Jan 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/01 JANUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (01 JANUARY) 
Date   T index  Conditions    
01 Jan   130    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values 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
Dec      110
Jan      89
Feb      88


2. FORECAST (02 JANUARY - 04 JANUARY)
Date   T index  Conditions       MUFs                              
02 Jan   110    Normal-poor      10-15% enhanced then depressed 
                                 20 to 30% late in the UT day
03 Jan    60    Poor-fair        Depressed 20 to 30%/near predicted 
                                 monthly values    
04 Jan    75    Fair-normal      Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC Preliminary HF Communications Warning 1 was issued 
on 1 January and is current for 3 Jan only. ASWFC SWF HF Communications 
Warning 2 was issued on 1 January and is current for 1-3 Jan. 
Maximum usable frequencies (MUFs) in the Australian region on 
UT day 01-Jan were near predicted monthly values to 15% enhanced. 
Spread F was observed at Hobart overnight. Perth MUFs are depressed 
15% after local dawn and this mild depression is not expected 
to persist. MUFs are initially expected to be 10-15% enhanced 
on 02-Jan then becoming depressed 20-30% late in the UT day due 
to the anticipated arrival of a CME associated with the recent 
M7 flare. MUFs on 03-Jan are expected to be 20-30% depressed 
and possibly 15% depressed on 04-Jan depending on the strength 
of the anticipated geomagnetic activity. Isolated 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