[Ips-dhfpr] ASWFC Daily HF Prop Report - 26 October 25 issued 2330 UT on 26 Oct 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 OCTOBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 OCTOBER) 
Date   T index  Conditions    
26 Oct   113    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 30% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% 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
Sep      109
Oct      89
Nov      89


2. FORECAST (27 OCTOBER - 29 OCTOBER)
Date   T index  Conditions       MUFs                              
27 Oct   110    Normal           Near to 15% above predicted 
                                 monthly values
28 Oct    90    Fair             Near predicted monthly values    
29 Oct    60    Fair             Depressed 15%/near predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 26-Oct were near predicted monthly values in 
the southern region and near predicted monthly values to 15% 
enhanced during local night in the northern region. MUFs are 
expected to be near predicted monthly values to 15% enhanced 
on 27-Oct. MUFs are expected to be near monthly predicted values 
on the 28-Oct and up to 15% depressed on 29-Oct due to anticipated 
high speed wind stream effects from a coronal hole

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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