[Ips-dhfpr] ASWFC Daily HF Prop Report - 11 June 26 issued 2330 UT on 11 Jun 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 JUNE 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 JUNE) 
Date   T index  Conditions    
11 Jun    83    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly 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 (12 JUNE - 14 JUNE)
Date   T index  Conditions       MUFs                              
12 Jun    80    Normal-fair      Near predicted monthly values
13 Jun    60    Fair             Near predicted monthly values 
                                 to 15% depressed    
14 Jun    65    Normal-fair      Near predicted monthly values 
                                 to 15% depressed   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 11-Jun were mostly near predicted values. Sporadic-E 
and generally degraded HF conditions were observed at northern 
Australian region sites such as Learmonth, Darwin and Niue Island. 
MUFs are expected to be near predicted values on 12-UT to 10% 
depressed due to the expected geomagnetic activity from a coronal 
hole. Further depressions of 15% are expected by 13-UT which 
are likely to carry into 14-Jun.

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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