[Ips-dhfpr] ASWFC Daily HF Prop Report - 04 November 25 issued 2330 UT on 04 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 NOVEMBER) 
Date   T index  Conditions    
04 Nov    92    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.5    0148UT  possible   lower  West Pacific
  X1.8    1734UT  probable   all    South American/
                                    Atlantic
  X1.1    2201UT  probable   all    East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Mostly 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 (05 NOVEMBER - 07 NOVEMBER)
Date   T index  Conditions       MUFs                              
05 Nov   110    Normal           Near to 15% above predicted 
                                 monthly values
06 Nov   105    Normal-fair      Near to 15% above predicted 
                                 monthly values    
07 Nov    85    Normal-fair      Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 100 was issued on 
3 November and is current for 3-5 Nov. Maximum usable frequencies 
(MUFs) on UT day 04-Nov were near predicted monthly values to 
15% enhanced in the Australian region. Spread F was observed 
at Hobart during local night hours. MUFs are expected to be near 
predicted monthly values to 15% enhanced over 04-05 Nov, and 
near predicted monthly values on 07-Nov. 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