[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 August 25 issued 2330 UT on 07 Aug 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 AUGUST 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 AUGUST) 
Date   T index  Conditions    
07 Aug    92    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.2    0232UT  possible   lower  E. Asia/Aust.
  M3.9    1131UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   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 (08 AUGUST - 10 AUGUST)
Date   T index  Conditions       MUFs                              
08 Aug    80    Normal-fair      Near predicted monthly values
09 Aug    80    Normal-fair      Near predicted monthly values    
10 Aug    90    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 08-Aug were near predicted monthly values, with 
20% depressions observed in the northern Australian region during 
local night hours. Spread F was observed at Hobart and Perth 
during local night hours. MUFs are expected to be near predicted 
monthly values over 08-10 Aug, with a slight chance of mild depressions 
over 08-09 Aug due to expected 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