[Ips-dhfpr] ASWFC Daily HF Prop Report - 25 July 26 issued 2330 UT on 25 Jul 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 JULY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 JULY) 
Date   T index  Conditions    
25 Jul    78    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:
      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 (26 JULY - 28 JULY)
Date   T index  Conditions       MUFs                              
26 Jul    72    Normal           Near predicted monthly values
27 Jul    60    Fair             Depressed 10 to 15%/near predicted 
                                 monthly values    
28 Jul    70    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 68 was issued on 
25 July and is current for 25-26 Jul. Maximum Usable Frequencies 
(MUFs) in the Australian region on UT day 25-Jul were mostly 
near predicted values. Strong spread-F was observed at Canberra, 
Perth, and Learmonth during local night hours, and strong sporadic-E 
was observed in Hobart. MUFs are forecast to be near predicted 
monthly values on 26-Jul, with depressions of 15% forecast for 
27-Jul due to forecast geomagnetic activity. MUFs will then recover 
toward predicted values on 28-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