[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 June 25 issued 2331 UT on 06 Jun 2025 [SEC=OFFICIAL]

Australian Space Weather Forecasting Centre aswfc at bom.gov.au
Sat Jun 7 09:31:15 AEST 2025


SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 JUNE 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 JUNE) 
Date   T index  Conditions    
06 Jun    69    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 40% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

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


2. FORECAST (07 JUNE - 09 JUNE)
Date   T index  Conditions       MUFs                              
07 Jun    90    Fair-normal     Depressed 15%/near predicted 
                                 monthly values
08 Jun    90    Fair-normal      Depressed 15%/near predicted 
                                 monthly values    
09 Jun    90    Fair-normal     Depressed 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC HF Communications Warning 59 was issued on 6 June 
and is current for 6-7 Jun. Maximum usable frequencies (MUFs) 
in the southern Australian region on UT day 06-Jun were depressed 
by up to 25%. MUFs in the northern Australian region were near 
predicted monthly values to depressed by 40% during local night. 
Spread F was observed at Hobart, Townsville and Darwin during 
local night hours. MUFs are expected to be mildly depressed by 
15% to near predicted monthly values over 07-09 Jun.

----------------------------------------------------------
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



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