[Ips-dhfpr] ASWFC Daily HF Prop Report - 12 October 26 issued 2330 UT on 12 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 OCTOBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 OCTOBER) 
Date   T index  Conditions    
12 Oct    47    Fair-poor      

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 40% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Depressed 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
Sep      61
Oct      60
Nov      58


2. FORECAST (13 OCTOBER - 15 OCTOBER)
Date   T index  Conditions       MUFs                              
13 Oct    35    Fair-normal      Depressed 15%/near predicted 
                                 monthly values
14 Oct    50    Normal           Near predicted monthly values    
15 Oct    50    Normal           Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region were depressed by 15% on UT day 12-Oct due to the ongoing 
effects of previous geomagnetic activity. MUFs improved late 
in the UT day, with southern Australian MUFs near predicted values. 
Strong spread F was observed at Perth and Hobart, with sporadic 
E also observed at Darwin and Hobart during local night hours. 
MUFs are forecast to decline to be 15% depressed on 13-Oct due 
to further geomagnetic activity. MUFs are expected to trend toward 
predicted monthly values over 14-15 Oct.

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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