[Ips-dhfpr] ASWFC Daily HF Prop Report - 19 September 22 issued 2331 UT on 19 Sep 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 SEPTEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 SEPTEMBER) 
Date   T index  Conditions    
19 Sep    79    Normal         

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Aug      53
Sep      68
Oct      69


2. FORECAST (20 SEPTEMBER - 22 SEPTEMBER)
Date   T index  Conditions       MUFs                              
20 Sep    75    Normal           Near predicted monthly values
21 Sep    75    Normal           Near predicted monthly values    
22 Sep    75    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 19-Sep were 
15-30% enhanced. Regional MUFs are expected to be near predicted 
monthly values to 15% enhanced over 20-22 Sep, with mild
depressions/degradations 
possible for southern Australian region during local night 22-23 
Sep and briefly after local dawn due to coronal hole high speed 
wind stream effects.

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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