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

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (28 JUNE) 
Date   T index  Conditions    
28 Jun    80    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.
   Northern Australian Region:
      Near predicted monthly values.
   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
May      67
Jun      68
Jul      65


2. FORECAST (29 JUNE - 01 JULY)
Date   T index  Conditions       MUFs                              
29 Jun    80    Normal           Near predicted monthly values
30 Jun    80    Normal           Near predicted monthly values    
01 Jul    70    Normal-fair      Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region were near predicted monthly values on UT day 28-Jun. Significant 
Spread-F was present across many locations in the Australian 
region during local night hours, including significant spread-F 
at Hobart, Brisbane, and Learmonth. MUFs are forecast to continue 
to be near predicted values over 29-30 Jun, with depressions 
of 10-15% forecast on 01-Jul due to anticipated geomagnetic activity. 
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