[Ips-dhfpr] ASWFC Daily HF Prop Report - 15 August 23 issued 2330 UT on 15 Aug 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 AUGUST) 
Date   T index  Conditions    
15 Aug   120    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 40-60%.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jul      103
Aug      88
Sep      84


2. FORECAST (16 AUGUST - 18 AUGUST)
Date   T index  Conditions       MUFs                              
16 Aug   115    Normal           Near to 15% above predicted 
                                 monthly values
17 Aug   115    Normal           Near to 15% above predicted 
                                 monthly values    
18 Aug   115    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 15-Aug were 
near predicted values to 25% enhanced in the Australian region. 
Strong enhancements were observed at Cocos Island. Weak ionospheric 
phase scintillation (<1 deg.) was observed 15/1000UT at Niue. 
Mild spread-F was observed at Hobart during local night hours. 
MUFs are expected to be near predicted monthly values to 15% 
enhanced over 16-18 Aug.

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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