[Ips-dhfpr] ASWFC Daily HF Prop Report - 05 November 25 issued 2330 UT on 05 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 NOVEMBER) 
Date   T index  Conditions    
05 Nov    98    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M7.4    1119UT  probable   lower  European
  M8.6    2207UT  probable   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      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
Oct      104
Nov      89
Dec      90


2. FORECAST (06 NOVEMBER - 08 NOVEMBER)
Date   T index  Conditions       MUFs                              
06 Nov    90    Fair-poor        Near predicted monthly values
07 Nov    60    Poor             Depressed 20%/near predicted 
                                 monthly values    
08 Nov    65    Fair             Depressed 20%/near predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 101 was issued on 
5 November and is current for 5-7 Nov. Maximum usable frequencies 
(MUFs) on UT day 05-Nov were near predicted monthly values in 
the Australian region, with 15% enhancements observed in the 
northern Australian region. Sporadic E was observed at Perth 
during local night hours, sporadic E also blocked out HF frequencies 
at 05/1600UT at Townsville. MUFs are expected to be near predicted 
monthly values on 06-Nov. MUFs are expected to be near predicted 
monthly values to depressed by 20% over 07-08 Nov 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