[Ips-dhfpr] ASWFC Daily HF Prop Report - 03 June 25 issued 2330 UT on 03 Jun 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/03 JUNE 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (03 JUNE) 
Date   T index  Conditions    
03 Jun    60    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  M1.4    1303UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Depressed by 35% during local day.
      Depressed by 25% during local night.
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

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


2. FORECAST (04 JUNE - 06 JUNE)
Date   T index  Conditions       MUFs                              
04 Jun    70    Normal           15 to 20% below predicted monthly 
                                 values
05 Jun    90    Normal           Near predicted monthly values    
06 Jun    95    Normal           Near predicted monthly values   

COMMENT: ASWFC Preliminary HF Communications Warning 56 was issued 
on 31 May and is current for 2-4 Jun. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 03-Jun were depressed 
by 15-35%. Spread F was observed at Hobart during local night 
hours. MUFs are expected to be 15-20% depresed on 04-Jun, recovering 
to near predicted monthly values over 05-06 Jun. 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