[Ips-dhfpr] ASWFC Daily HF Prop Report - 04 October 23 issued 2331 UT on 04 Oct 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 OCTOBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 OCTOBER) 
Date   T index  Conditions    
04 Oct   136    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 40% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 25% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Sep      104
Oct      98
Nov      96


2. FORECAST (05 OCTOBER - 07 OCTOBER)
Date   T index  Conditions       MUFs                              
05 Oct   130    Normal           Near to 20% above predicted 
                                 monthly values
06 Oct   130    Normal           Near to 20% above predicted 
                                 monthly values    
07 Oct   130    Normal           Near to 20% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 4-Oct were 
20-25% enhanced in the southern Australian region, with most 
enhancements occurring during local day. MUFs in the northern 
Australian region were near predicted monthly values to 40% enhanced, 
with most enhancements occurring during local night. MUFs are 
expected to be near predicted monthly values to 20% enhanced 
over 5-7 Oct. 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