[Ips-dhfpr] ASWFC Daily HF Prop Report - 02 July 25 issued 2330 UT on 02 Jul 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/02 JULY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (02 JULY) 
Date   T index  Conditions    
02 Jul    81    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Depressed by 15% during the local day to 
      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
Jun      79
Jul      104
Aug      102


2. FORECAST (03 JULY - 05 JULY)
Date   T index  Conditions       MUFs                              
03 Jul    85    Normal           Depressed 10 to 15%/near predicted 
                                 monthly values
04 Jul    85    Normal-fair      Depressed 10 to 15%/near predicted 
                                 monthly values    
05 Jul    70    Normal-fair      Depressed 10 to 20%/near predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 2-Jul were 20% depressed to near predicted values. 
Spread F was generally observed during local night hours. MUFs 
are generally expected to be 15-20% depressed to near predicted 
values over 3-5 Jul, with mildly degraded HF conditions during 
local night hours for the southern Australian region during 04-05 
Jul in association with mild geomagnetic activity induced by 
a coronal hole wind stream.

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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