[Ips-dhfpr] ASWFC Daily HF Prop Report - 17 November 25 issued 2330 UT on 17 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 NOVEMBER) 
Date   T index  Conditions    
17 Nov   110    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   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 (18 NOVEMBER - 20 NOVEMBER)
Date   T index  Conditions       MUFs                              
18 Nov   110    Normal           Near to 15% above predicted 
                                 monthly values
19 Nov   109    Normal           Near to 15% above predicted 
                                 monthly values    
20 Nov   111    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) were largely near 
predicted monthly values in the Australian region, with some 
enhancements seen at Niue Island, and some mild depressions during 
the morning hours in Hobart. MUFs are expected to be near predicted 
monthly values to enhanced by 15% over the period 18-20 Nov.

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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