[Ips-dhfpr] ASWFC Daily HF Prop Report - 13 September 26 issued 2330 UT on 13 Sep 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/13 SEPTEMBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (13 SEPTEMBER) 
Date   T index  Conditions    
13 Sep    66    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Mostly 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
Aug      66
Sep      62
Oct      60


2. FORECAST (14 SEPTEMBER - 16 SEPTEMBER)
Date   T index  Conditions       MUFs                              
14 Sep    65    Fair             Near predicted monthly values
15 Sep    55    Fair             Near predicted monthly values 
                                 to 15% depressed    
16 Sep    55    Fair             Near predicted monthly values 
                                 to 15% depressed   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 13-Sep were mostly near predicted values. MUFs 
are expected to be mostly near predicted values on 14-Sep. MUFs 
may become 15% depressed over 15-16 Sep due to anticipated geomagnetic 
activity.

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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