[Ips-dhfpr] ASWFC Daily HF Prop Report - 18 September 24 issued 2330 UT on 18 Sep 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 SEPTEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 SEPTEMBER) 
Date   T index  Conditions    
18 Sep   147    Normal-poor    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 50% during local day.
      Enhanced by 30% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Enhanced by 25% 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):
      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 (19 SEPTEMBER - 21 SEPTEMBER)
Date   T index  Conditions       MUFs                              
19 Sep   155    Normal           Near to 15% above predicted 
                                 monthly values
20 Sep   155    Normal           Near to 15% above predicted 
                                 monthly values    
21 Sep   155    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 18-Sep were generally near predicted monthly 
values to 15-25% enhanced, with the strongest enhancements observed 
during local day. Spread F was observed at Hobart during local 
night hours. MUFs are expected to be near predicted monthly values 
to 15% enhanced over 19-21 Sep.

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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