[Ips-dhfpr] ASWFC Daily HF Prop Report - 19 July 26 issued 2330 UT on 19 Jul 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 JULY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 JULY) 
Date   T index  Conditions    
19 Jul    59    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 20% during local night.
   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
Jun      81
Jul      66
Aug      63


2. FORECAST (20 JULY - 22 JULY)
Date   T index  Conditions       MUFs                              
20 Jul    60    Normal           Near predicted monthly values
21 Jul    60    Normal           Near predicted monthly values    
22 Jul    45    Fair             Depressed 15%/near predicted 
                                 monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region on UT day 19-Jul were mostly near predicted monthly values, 
with depressions up to 20% observed during local night hours 
in the northern Australian region. Strong spread-F was observed 
across the Australian region during local night hours. MUFs are 
forecast to be near predicted monthly values over 20-21 Jul, 
with some depressions possible during local night hours. MUFs 
are expected to be near predicted values to 15% depressed on 
22-Jul due to anticipated geomagnetic activity.

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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