[Ips-dhfpr] ASWFC Daily HF Prop Report - 18 September 22 issued 2332 UT on 18 Sep 2022 [SEC=OFFICIAL]

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SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 SEPTEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 SEPTEMBER) 
Date   T index  Conditions    
18 Sep    88    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 45% during local day.
      Enhanced by 65% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Enhanced by 15% 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 (19 SEPTEMBER - 21 SEPTEMBER)
Date   T index  Conditions       MUFs                              
19 Sep    80    Normal-fair      Near predicted monthly values 
                                 to 15% enhanced
20 Sep    75    Normal           Near predicted monthly values 
                                 to 15% enhanced    
21 Sep    70    Normal           Near predicted monthly values 
                                 to 15% enhanced   

COMMENT: ASWFC SWF HF Communications Warning 71 was issued on 
17 September and is current for 18-19 Sep. Maximum usable frequencies 
(MUFs) on UT dau 18-Sep were 15-20% enhanced during the local 
day and night. Sporadic-E was observed at Darwin and Townsville 
during local night. Regional MUFs are expected to be near predicted 
monthly values to 15% enhanced over 19-21 Sep, with mild depressions 
possible during local night 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