[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 September 24 issued 2330 UT on 16 Sep 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 SEPTEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 SEPTEMBER) 
Date   T index  Conditions    
16 Sep   127    Normal         

Flares: none.

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

PCA Event : No event.

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


2. FORECAST (17 SEPTEMBER - 19 SEPTEMBER)
Date   T index  Conditions       MUFs                              
17 Sep   110    Fair             Near predicted monthly values/depressed 
                                 0 to 15%
18 Sep   130    Normal           Near predicted monthly values    
19 Sep   130    Normal           Near predicted monthly values   

COMMENT: ASWFC Preliminary HF Communications Warning 102 was 
issued on 14 September and is current for 16-17 Sep. ASWFC SWF 
HF Communications Warning 103 was issued on 16 September and 
is current for 16-18 Sep. Maximum usable frequencies (MUFs) in 
the Australian region on UT day 16-Sep were generally near predicted 
monthly values. Enhancements of 40% were observed in northern 
Australia during local night hours. Spread F was observed at 
Hobart during local night hours. MUFs are expected to be near 
predicted monthly values to 15% depressed on 17-Sep due to anticipated 
geomagnetic activity. MUFs are expected to recover to near predicted 
monthly values over 18-19 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