[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 June 25 issued 2330 UT on 07 Jun 2025 [SEC=OFFICIAL]

Sun Jun 8 09:30:56 AEST 2025

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 JUNE 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 JUNE) 
Date   T index  Conditions    
07 Jun    76    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
May      94
Jun      109
Jul      107

2. FORECAST (08 JUNE - 10 JUNE)
Date   T index  Conditions       MUFs                              
08 Jun    75    Normal-fair      15 to 20% below predicted monthly 
                                 values
09 Jun    90    Normal           Near predicted monthly values    
10 Jun    90    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 07-Jun were near predicted monthly values to 
30% depressed in northern Australia. Spread F was observed at 
Hobart and Townsville during local night hours. MUFs are expected 
to be 15-20% depressed on 08-Jun, returning to near predicted 
monthly values over 09-10 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