[Ips-dhfpr] ASWFC Daily HF Prop Report - 29 November 25 issued 2330 UT on 29 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/29 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 NOVEMBER) 
Date   T index  Conditions    
29 Nov    93    Fair-normal    

Flares    Max     Fadeout    Freq.  Sectors
  M1.6    0002UT  possible   lower  West Pacific
  M1.5    0420UT  possible   lower  E. Asia/Aust.
  M1.1    1316UT  possible   lower  European
  M2.8    1608UT  possible   lower  South American/
                                    Atlantic
  M1.4    2014UT  possible   lower  East Pacific/
                                    North American
  M1.4    2148UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Depressed 15-30% during the local day at 
      Townsville and Brisbane. Near predicted 
      monthly values at other sites.
   Southern Australian Region:
      Depressed 15% during the local day then
      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 (30 NOVEMBER - 02 DECEMBER)
Date   T index  Conditions       MUFs                              
30 Nov    85    Normal           Depressed 10 to 15%/near predicted 
                                 monthly values
01 Dec    95    Normal           Near predicted monthly values    
02 Dec   100    Normal           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 29-Nov 
were initially depressed by 15-30% then recovering during the 
local day. Southern Australian region MUFs are 15% depressed 
after local dawn this morning. Spread F was observed during local 
night hours at Hobart. Sporadic E was observed during the local 
day at Niue. MUFs are generally expected to be near predicted 
monthly values during 30-Nov to 02-Dec. Frequent HF 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