[Ips-dhfpr] ASWFC Daily HF Prop Report - 04 August 26 issued 2330 UT on 04 Aug 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 AUGUST 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 AUGUST) 
Date   T index  Conditions    
04 Aug    72    Normal-fair    

Flares: none.

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

PCA Event : No event.

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


2. FORECAST (05 AUGUST - 07 AUGUST)
Date   T index  Conditions       MUFs                              
05 Aug    70    Normal           Near predicted monthly values
06 Aug    70    Normal           Near predicted monthly values    
07 Aug    70    Normal           Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) on UT day 04-Aug in 
the Australian region were mostly near predicted values, with 
some enhancements observed in the southern Australian region 
during local night hours. Depressions of up to 20% were observed 
at Niue Island. Strong spread-F and sporadic E were observed 
during local night hours at Hobart and Canberra, with spread-F 
also observed at Learmonth. MUFs are forecast to remain near 
predicted values over 05-07 Aug.

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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