[Ips-dhfpr] ASWFC Daily HF Prop Report - 19 October 24 issued 2331 UT on 19 Oct 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 OCTOBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 OCTOBER) 
Date   T index  Conditions    
19 Oct   136    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M4.7 18/2329UT  possible   lower  West Pacific
  M6.5    0656UT  probable   lower  Mid East/Indian
  M1.7    1434UT  possible   lower  South American/
                                    Atlantic

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

PCA Event : No event.

Monthly T index:
Month  T index
Sep      147
Oct      116
Nov      115


2. FORECAST (20 OCTOBER - 22 OCTOBER)
Date   T index  Conditions       MUFs                              
20 Oct   140    Normal           Near predicted monthly values 
                                 to 20% enhanced
21 Oct   135    Normal           Near predicted monthly values 
                                 to 20% enhanced    
22 Oct   140    Normal           Near predicted monthly values 
                                 to 20% enhanced   

COMMENT: ASWFC SWF HF Communications Warning 119 was issued on 
18 October and is current for 19-20 Oct. Maximum usable frequencies 
(MUFs) on UT day 19-Oct were near predicted values to 15% enhanced 
in the Australian region. Ionospheric conditions were generally 
good on 19-Oct. MUFs are expected to be near predicted values 
to 20% enhanced over 20-22 Oct. 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