[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 July 25 issued 2332 UT on 07 Jul 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (07 JULY) 
Date   T index  Conditions    
07 Jul    83    Fair-normal    

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Jun      79
Jul      104
Aug      102


2. FORECAST (08 JULY - 10 JULY)
Date   T index  Conditions       MUFs                              
08 Jul    90    Normal-fair      Near predicted monthly values
09 Jul    90    Fair             Near predicted monthly values    
10 Jul    80    Fair-normal      Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC HF Communications Warning 69 was issued on 7 July 
and is current for 7-8 Jul. Maximum usable frequencies (MUFs) 
in the Australian region on UT day 7-Jul were depressed 20% to 
near predicted values. Spread-F was observed at Hobart during 
local night hours. Persistent blanketing sporadic E observed 
at Mawson in Antarctica. MUFs are expected to be generally near 
predicted values with the chance of mildly depressed MUFs in 
the southern Australian region on 10-Jul.

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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