[Ips-dhfpr] ASWFC Daily HF Prop Report - 01 October 26 issued 2331 UT on 01 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (01 OCTOBER) 
Date   T index  Conditions    
01 Oct    53    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Sep      61
Oct      60
Nov      58


2. FORECAST (02 OCTOBER - 04 OCTOBER)
Date   T index  Conditions       MUFs                              
02 Oct    50    Normal-fair      Near predicted monthly values
03 Oct    35    Fair-normal      Depressed 15%/near predicted 
                                 monthly values    
04 Oct    35    Fair-normal      Depressed 15%/near predicted 
                                 monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region were mostly near predicted values on the 01-Oct. Notable 
depressions were seen at Niue throughout most of the UT day. 
Spread-F was observed in Canberra and Hobart during local night 
hours. MUFs are forecast to remain near predicted values over 
02-Oct, with depressions of up to 15% possible over the 03-04 
Oct due to geomagnetic activity from two CMEs and 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