[Ips-dhfpr] ASWFC Daily HF Prop Report - 28 July 26 issued 2330 UT on 28 Jul 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 JULY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 JULY) 
Date   T index  Conditions    
28 Jul    88    Normal-fair    

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Jun      81
Jul      66
Aug      63


2. FORECAST (29 JULY - 31 JULY)
Date   T index  Conditions       MUFs                              
29 Jul    85    Normal           Near to 15% above predicted 
                                 monthly values
30 Jul    85    Normal           Near to 15% above predicted 
                                 monthly values    
31 Jul    85    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region were mostly near predicted monthly values on UT day 27-Jul, 
with 15-20% enhancements observed in the southern Australian 
region. Spread-F was observed at several Australian sites during 
local night hours. MUFs are expected to be near predicted monthly 
values to 15% enhanced over 29-31 Jul.

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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