[Ips-dhfpr] ASWFC Daily HF Prop Report - 03 August 23 issued 2330 UT on 03 Aug 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/03 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (03 AUGUST) 
Date   T index  Conditions    
03 Aug   106    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.0    1155UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Enhanced by 40% during local day.
      Enhanced by 80% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

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


2. FORECAST (04 AUGUST - 06 AUGUST)
Date   T index  Conditions       MUFs                              
04 Aug   120    Normal           Near to 15% above predicted 
                                 monthly values
05 Aug   100    Normal-fair      Near predicted monthly values    
06 Aug    90    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 03-Aug were 
near predicted values to 15% enhanced in the Australian region. 
Spread-F was observed in Hobart. Strong sporadic-E was observed 
at Darwin at 0700 UT, and weak sporadic-E was observed at Brisbane, 
Canberra and Norfolk Island during local night hours. Scintillation 
was observed at Niue Island and Weipa between 0831 and 1210 UT 
on 03-Aug. MUFs are expected to be near predicted values to 15% 
enhanced on 04-Aug, and near predicted values over 05-06 Aug. 
Shortwave fadeout 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