[Ips-dhfpr] ASWFC Daily HF Prop Report - 30 November 25 issued 2330 UT on 30 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 NOVEMBER) 
Date   T index  Conditions    
30 Nov    98    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% 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 (01 DECEMBER - 03 DECEMBER)
Date   T index  Conditions       MUFs                              
01 Dec    90    Normal-fair      Near predicted monthly values
02 Dec    90    Normal-fair      Near predicted monthly values    
03 Dec    90    Normal-fair      Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 113 was issued on 
28 November and is current for 29 Nov to 1 Dec. Maximum usable 
frequencies (MUFs) in the Australian region on UT day 30-Nov 
were mostly near predicted monthly values, with some mild nighttime 
depressions and enhancements seen in the Cocos Islands and Niue 
Island respectively. Spread F was observed during local night 
hours at Hobart, and Sporadic E was observed at times at Hobart 
and Niue. MUFs are forecast to continue to be near predicted 
monthly values during 01-03 Dec. Shortwave fadeouts are likely 
on daylight HF circuits.

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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