[Ips-dhfpr] ASWFC Daily HF Prop Report - 25 June 23 issued 2331 UT on 25 Jun 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 JUNE) 
Date   T index  Conditions    
25 Jun   122    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Enhanced by 25-35%.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
May      98
Jun      88
Jul      87


2. FORECAST (26 JUNE - 28 JUNE)
Date   T index  Conditions       MUFs                              
26 Jun   100    Normal           Near predicted monthly values 
                                 to 15% enhanced
27 Jun   100    Normal           Near predicted monthly values 
                                 to 15% enhanced    
28 Jun   100    Normal           Near predicted monthly values 
                                 to 15% enhanced   

COMMENT: Maximum usable frequencies (MUFs) on UT day 25-Jun in 
the Australian region were generally near predicted monthly values 
to 35% enhanced. Spread F was occasionally observed during local 
night hours. Mildly degraded HF conditions may be experienced 
during local night hours. MUFs are generally expected to be near 
predicted values to 15% enhanced over 26-28 Jun. Moderately degraded 
HF conditions forecast for southern region Australia on 26-Jun 
are now not expected. Shortwave fadeouts are probable.

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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