[Ips-dhfpr] ASWFC Daily HF Prop Report - 25 August 26 issued 2330 UT on 25 Aug 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 AUGUST 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 AUGUST) 
Date   T index  Conditions    
25 Aug    79    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.9    0126UT  possible   lower  West Pacific
  M1.0    0403UT  possible   lower  E. Asia/Aust.
  M1.8    0640UT  possible   lower  Mid East/Indian
  M6.9    1002UT  probable   lower  European

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 85% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jul      75
Aug      64
Sep      61


2. FORECAST (26 AUGUST - 28 AUGUST)
Date   T index  Conditions       MUFs                              
26 Aug    75    Normal           Near predicted monthly values
27 Aug    75    Normal           Near predicted monthly values    
28 Aug    55    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 15%   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 25-Aug were near predicted monthly values, with 
enhancements observed in the southern Australian region. MUFs 
are expected to be near predicted monthly values over 26-27 Aug. 
MUFs are expected to be near predicted monthly values to 10-15% 
depressed on 28-Aug due to anticipated geomagnetic activity. 
Shortwave fadeouts are possible.

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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