[Ips-dhfpr] ASWFC Daily HF Prop Report - 27 November 25 issued 2330 UT on 27 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/27 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 NOVEMBER) 
Date   T index  Conditions    
27 Nov    91    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 40% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% 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 (28 NOVEMBER - 30 NOVEMBER)
Date   T index  Conditions       MUFs                              
28 Nov    90    Normal-fair      Near predicted monthly values
29 Nov    90    Normal           Near predicted monthly values    
30 Nov    95    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) were near predicted 
monthly values to enhanced by 15-40% in the Australian region 
for UT day 27-Nov. Low frequency sporadic-E was observed in the 
southern Australian region, and spread F was also observed in 
Hobart. MUFs are expected to be near predicted monthly values 
during 28-30 Nov. Sporadic-E during local night hours may also 
be observed.

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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