[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 October 23 issued 2330 UT on 07 Oct 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 OCTOBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 OCTOBER) 
Date   T index  Conditions    
07 Oct   140    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.7    1806UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 90% during local night.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 40% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Enhanced by 15-20% during local day and after local dawn.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 25% over the UT day.

PCA Event : No event.

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


2. FORECAST (08 OCTOBER - 10 OCTOBER)
Date   T index  Conditions       MUFs                              
08 Oct   140    Normal           Near to 15% above predicted 
                                 monthly values
09 Oct   140    Normal           Near to 15% above predicted 
                                 monthly values    
10 Oct   140    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 07-Oct were 
15-30% enhanced in the Australian region. Spread F was observed 
at Hobart during local night hours. MUFs are expected to be near 
predicted values to 15% enhanced over 08-10 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