[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 August 26 issued 2330 UT on 23 Aug 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 AUGUST 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 AUGUST) 
Date   T index  Conditions    
23 Aug    73    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      No data available during local day.
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
      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 (24 AUGUST - 26 AUGUST)
Date   T index  Conditions       MUFs                              
24 Aug    75    Normal           Near predicted monthly values
25 Aug    75    Normal           Near predicted monthly values    
26 Aug    75    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 76 was issued on 
22 August and is current for 23-25 Aug. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 23-Aug were near predicted 
monthly values, with enhancements observed in the southern Australian 
region in the last few hours. Spread F was observed at Perth 
during local night hours. MUFs are expected to be mostly near 
predicted monthly values over 24-26 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