[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 September 25 issued 2330 UT on 07 Sep 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 SEPTEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 SEPTEMBER) 
Date   T index  Conditions    
07 Sep    92    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.2 06/2215UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% 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 (08 SEPTEMBER - 10 SEPTEMBER)
Date   T index  Conditions       MUFs                              
08 Sep   100    Normal           Near predicted monthly values
09 Sep   100    Normal           Near predicted monthly values    
10 Sep   100    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the northern Australian 
region on UT day 07-Sep were near predicted monthly values. Spread 
F was observed at Canberra, Perth Hobart, Niue during local night 
hours. MUFs are generally expected to be near to predicted monthly 
values on 08 Sep with degraded HF conditions during local night 
hours for the southern Australian region. Scintillation was observed 
at Niue on UT day 07 Sep starting at 07:56 and ending on 08:20 
UT 04 Sep. MUFs are expected to be near predicted monthly values 
on 09-10 Sep. Isolated minor shortwave fadeouts are possible.

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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