[Ips-dhfpr] ASWFC Daily HF Prop Report - 28 September 25 issued 2330 UT on 28 Sep 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 SEPTEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 SEPTEMBER) 
Date   T index  Conditions    
28 Sep   136    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M6.4    0843UT  probable   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Enhanced by 45% during local day.
      Enhanced by 65% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 50% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 30% 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
Aug      96
Sep      92
Oct      90


2. FORECAST (29 SEPTEMBER - 01 OCTOBER)
Date   T index  Conditions       MUFs                              
29 Sep   130    Normal           Near to 30% above predicted 
                                 monthly values
30 Sep   130    Normal           Near to 30% above predicted 
                                 monthly values    
01 Oct   130    Normal           Near to 30% above monthly predicted 
                                 values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region were enhanced up to 50%. MUFs are expected to be near 
predicted values to 30% enhanced over 29-30 Sep to 1-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