[Ips-dhfpr] ASWFC Daily HF Prop Report - 01 July 25 issued 2330 UT on 01 Jul 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/01 JULY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (01 JULY) 
Date   T index  Conditions    
01 Jul    81    Normal-fair    

Flares: none.

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

PCA Event : No event.

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


2. FORECAST (02 JULY - 04 JULY)
Date   T index  Conditions       MUFs                              
02 Jul    80    Normal-fair      Near predicted values to 20% 
                                 depressed
03 Jul    75    Normal-fair      Near predicted values to 20% 
                                 depressed    
04 Jul    75    Fair             Near predicted values to 20% 
                                 depressed   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 1-Jul were near predicted values to 20% depressed. 
Conditions in the northern Australian regions, and also in Canberra, 
during local nighttime hours were generally degraded. Strong 
spread-F was observed at Hobart during local nighttime. MUFs 
are expected to be near predicted values to 20% depressed over 
2-4 Jul, initially due to CME activity and then due to coronal 
hole activity by the end of the period.

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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