[Ips-dhfpr] ASWFC Daily HF Prop Report - 03 August 25 issued 2332 UT on 03 Aug 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/03 AUGUST 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (03 AUGUST) 
Date   T index  Conditions    
03 Aug   101    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.9    1357UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 25% during local night.
      Depressed by 30% after local dawn.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly 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
Jul      88
Aug      96
Sep      93


2. FORECAST (04 AUGUST - 06 AUGUST)
Date   T index  Conditions       MUFs                              
04 Aug    95    Normal           Near predicted monthly values
05 Aug    95    Normal           Near predicted monthly values    
06 Aug    95    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 72 was issued on 
3 August and is current for 4-6 Aug. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 03-Aug were mostly 
near predicted monthly values. Spread F was observed at Hobart 
and Learmonth during local night hours. MUFs are expected to 
be near predicted monthly values over 04-06 Aug. 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