[Ips-dhfpr] ASWFC Daily HF Prop Report - 09 November 25 issued 2331 UT on 09 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/09 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 NOVEMBER) 
Date   T index  Conditions    
09 Nov   116    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  X1.7    0735UT  probable   all    Mid East/Indian

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 40% 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
Oct      104
Nov      89
Dec      90


2. FORECAST (10 NOVEMBER - 12 NOVEMBER)
Date   T index  Conditions       MUFs                              
10 Nov   105    Normal           Near to 15% above predicted 
                                 monthly values
11 Nov    90    Fair-poor        Near predicted monthly values    
12 Nov    60    Fair             Depressed 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 104 was issued on 
8 November and is current for 8-10 Nov. Maximum usable frequencies 
(MUFs) in the Northern Australian region on UT day 09-Nov were 
up to 40% enhanced. MUFs in the Southern Australian region were 
up to 15% depressed. Spread F was observed at Hobart during local 
night hours. MUFs are expected to be near predicted monthly values 
to 15% enhanced on the 10-Nov. MUFs over 11-12 Nov are expected 
to be near predicted monthly values to 15% depressed, due to 
anticipated geomagnetic activity. Shortwave fadeouts are probable.

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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