[Ips-dhfpr] ASWFC Daily HF Prop Report - 05 September 23 issued 2330 UT on 05 Sep 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 SEPTEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 SEPTEMBER) 
Date   T index  Conditions    
05 Sep    92    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.0    0812UT  possible   lower  Mid East/Indian
  M1.2    1945UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 80% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      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      115
Sep      96
Oct      93


2. FORECAST (06 SEPTEMBER - 08 SEPTEMBER)
Date   T index  Conditions       MUFs                              
06 Sep    95    Normal-fair      Near predicted monthly values
07 Sep   100    Normal           Near predicted monthly values    
08 Sep   105    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 05-Sep were mostly near predicted values in 
the Australian region. Spread was observed in Hobart, Perth and 
Niue during local night hours. Overall degraded conditions were 
observed at Hobart and Niue. Scintillation was observed at Niue 
during local evening hours. MUFs are expected to be near predicted 
monthly values over 06-08 Sep, with enhancements of 15% possible 
by 08-Sep. Some further degradations are possible during local 
night hours. Isolated 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