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

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 JULY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 JULY) 
Date   T index  Conditions    
26 Jul    85    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.2    1528UT  possible   lower  South American/
                                    Atlantic

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 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Mostly 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
Jun      81
Jul      66
Aug      63


2. FORECAST (27 JULY - 29 JULY)
Date   T index  Conditions       MUFs                              
27 Jul    70    Fair             Depressed 10 to 15%/near predicted 
                                 monthly values
28 Jul    80    Normal-fair      Near predicted monthly values    
29 Jul    84    Normal           Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region were mostly near predicted values on 26-Jul, with some 
enhancements observed in the northern Australian region. Some 
spread-F was observed at Canberra, Perth, and Hobart during local 
night hours, with strong sporadic-E observed at Darwin, Perth, 
and Townsville. MUFs are expected to become depressed over 27-Jul 
due to anticipated geomagnetic activity, with depressions of 
up to 15% forecast. MUFs will then recover toward predicted values 
on 28-29 Jul. Isolated 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