[Ips-dhfpr] ASWFC Daily HF Prop Report - 22 September 24 issued 2331 UT on 22 Sep 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 SEPTEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 SEPTEMBER) 
Date   T index  Conditions    
22 Sep   144    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.7    2139UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 35% during local day.
      Enhanced by 75% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 20% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

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


2. FORECAST (23 SEPTEMBER - 25 SEPTEMBER)
Date   T index  Conditions       MUFs                              
23 Sep   140    Normal           Near to 20% above predicted 
                                 monthly values
24 Sep   140    Normal           Near to 20% above predicted 
                                 monthly values    
25 Sep   135    Normal           Near to 20% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 105 was issued on 
22 September and is current for 22-24 Sep. On UT day 22-Sep maximum 
usable frequencies (MUFs) in the Australian region were near 
predicted values to enhanced by 20%.Sporadic E was observed in 
Townsville and spread-F was observed in Darwin and Cocos Islands 
during local night hours. Scintillation was observed from 0858 
to 1259 UT in Darwin Weipa and Niue. MUFs are expected to be 
near predicted values to 20% enhanced over 23-25 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