[Ips-dhfpr] ASWFC Daily HF Prop Report - 17 September 24 issued 2330 UT on 17 Sep 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 SEPTEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 SEPTEMBER) 
Date   T index  Conditions    
17 Sep   129    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   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:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 0735UT 17/09, Ended at 1425UT 17/09

Monthly T index:
Month  T index
Aug      159
Sep      117
Oct      116


2. FORECAST (18 SEPTEMBER - 20 SEPTEMBER)
Date   T index  Conditions       MUFs                              
18 Sep   140    Normal           Near to 15% above predicted 
                                 monthly values
19 Sep   140    Normal           Near to 15% above predicted 
                                 monthly values    
20 Sep   140    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 103 was issued on 
16 September and is current for 16-18 Sep. ASWFC HF Communications 
Warning 104 was issued on 17 September and is current for 17-18 
Sep. Maximum usable frequencies (MUFs) in the Australian region 
on UT day 17-Sep were generally near predicted monthly values 
to 15-20% enhanced. Spread F was observed at Hobart during local 
night hours. MUFs are expected to be near predicted monthly values 
to 15% enhanced over 18-20 Sep. 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