[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 November 25 issued 2330 UT on 06 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 NOVEMBER) 
Date   T index  Conditions    
06 Nov    66    Fair-poor      

Flares    Max     Fadeout    Freq.  Sectors
  M8.6 05/2207UT  probable   lower  East Pacific/
                                    North American
  M1.1    0431UT  possible   lower  E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Oct      104
Nov      89
Dec      90


2. FORECAST (07 NOVEMBER - 09 NOVEMBER)
Date   T index  Conditions       MUFs                              
07 Nov    70    Poor             Depressed 5 to 15%/near predicted 
                                 monthly values
08 Nov    60    Fair             Depressed 25%/near predicted 
                                 monthly values    
09 Nov    60    Normal-fair      Depressed 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 101 was issued on 
5 November and is current for 5-7 Nov. ASWFC HF Communications 
Warning 103 was issued on 6 November and is current for 7 Nov 
only. Maximum usable frequencies (MUFs) on UT day 06-Nov were 
near predicted monthly values to 25% depressed during local night 
in the northern Australian region. MUFs were depressed throughout 
06-Nov in the southern Australian region, with worse depressions 
observed during local night. Spread F was observed at Perth and 
Hobart during local night hours. Sporadic E was observed at Brisbane 
and Hobart during local night hours. MUFs are expected to be 
near predicted monthly values to depressed by up to 15% on 07-Nov, 
and depressed by up to 25% on 08-Nov before recovering towards 
monthly predicted values on 08-Nov. Expected depressions are 
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