[Ips-dhfpr] ASWFC Daily HF Prop Report - 09 August 26 issued 2330 UT on 09 Aug 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/09 AUGUST 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 AUGUST) 
Date   T index  Conditions    
09 Aug    42    Fair-normal    

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 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

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


2. FORECAST (10 AUGUST - 12 AUGUST)
Date   T index  Conditions       MUFs                              
10 Aug    45    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 10%
11 Aug    60    Normal           Near predicted monthly values    
12 Aug    50    Normal-fair      Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 70 was issued on 9 August 
and is current for 9-10 Aug. Maximum Usable Frequencies (MUFs) 
on UT day 09-Aug were depressed during local daylight hours in 
the southern Australian region and during local night hours in 
the northern Australian region. Depressions appear to be easing 
heading into 10-Aug. Spread F and some instances of sporadic 
E were observed throughout the Australian region during local 
night hours. MUFs are forecast to be near predicted monthly values 
over 10-12 Aug, with mild depressions possible on 10-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