[Ips-dhfpr] ASWFC Daily HF Prop Report - 09 July 23 issued 2331 UT on 09 Jul 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/09 JULY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 JULY) 
Date   T index  Conditions    
09 Jul    82    Normal         

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Jun      98
Jul      91
Aug      88


2. FORECAST (10 JULY - 12 JULY)
Date   T index  Conditions       MUFs                              
10 Jul    85    Normal           Near predicted monthly values
11 Jul    85    Normal           Near predicted monthly values    
12 Jul    85    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 9-Jul in 
the Australian region were generally near predicted monthly values, 
with depressions of up to 20% during local night in the northern 
Australian region. Spread F was observed during local night hours 
across the Australian region. MUFs are expected to be near predicted 
monthly values over 10-12 Jul. Isolated minor 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