[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 September 23 issued 2330 UT on 06 Sep 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 SEPTEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 SEPTEMBER) 
Date   T index  Conditions    
06 Sep   102    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
 M1/-- 05/2339UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 50% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Aug      115
Sep      96
Oct      93


2. FORECAST (07 SEPTEMBER - 09 SEPTEMBER)
Date   T index  Conditions       MUFs                              
07 Sep   110    Normal           Near predicted monthly values 
                                 to 15% enhanced
08 Sep   110    Normal           Near predicted monthly values 
                                 to 15% enhanced    
09 Sep   110    Normal           Near predicted monthly values 
                                 to 15% enhanced   

COMMENT: ASWFC SWF HF Communications Warning 87 was issued on 
5 September and is current for 6-8 Sep. Maximum usable frequencies 
(MUFs) on UT day 06-Sep were mostly near predicted values in 
the Australian region. Strong frequency spread was observed at 
Hobart and range spread was observed at Niue during local night 
hours. Scintillation was observed at Niue 06/0739-1050UT. MUFs 
are expected to be near predicted monthly values to 15% enhanced 
over 07-09 Sep. Further periods of local night HF degradation 
are possible for the southern Australian region. Isolated minor 
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