[Ips-dhfpr] ASWFC Daily HF Prop Report - 13 August 23 issued 2330 UT on 13 Aug 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/13 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (13 AUGUST) 
Date   T index  Conditions    
13 Aug   120    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 50% during local day.
      Enhanced by 40% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   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
Jul      103
Aug      88
Sep      84


2. FORECAST (14 AUGUST - 16 AUGUST)
Date   T index  Conditions       MUFs                              
14 Aug   120    Normal           Near to 20% above predicted 
                                 monthly values
15 Aug   110    Normal-fair      Near to 15% above predicted 
                                 monthly values    
16 Aug   110    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 13-Aug were 
near predicted values to 20% enhanced in the Australian region. 
Degraded conditions were observed at Townsville and Niue Island 
from approximately 13/1800 UT onwards. Spread-F was observed 
at Hobart during local night hours. MUFs are expected to be near 
predicted monthly values to 20% enhanced over 14-16 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