[Ips-dhfpr] ASWFC Daily HF Prop Report - 04 September 22 issued 2330 UT on 04 Sep 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 SEPTEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 SEPTEMBER) 
Date   T index  Conditions    
04 Sep    71    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
   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 (05 SEPTEMBER - 07 SEPTEMBER)
Date   T index  Conditions       MUFs                              
05 Sep    35    Fair-poor        20-30% depressed to near predicted 
                                 monthly values
06 Sep    40    Fair             15-20% depressed to near predicted 
                                 monthly values to    
07 Sep    50    Fair             Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 67 was issued on 4 September 
and is current for 6-7 Sep. Maximum usable frequencies (MUFs) 
on UT day 04-Sep were mostly near predicted monthly values. Enhanced 
conditions were observed in the northern Australian region at 
local night. Sporadic-E was observed at Brisbane, Perth, Norfolk 
Island and Nuie Island at local dusk. Spread-F was observed at 
Hobart and Townsville and local night. Regional MUFs are expected 
to be near predicted monthly values to 20% depressed over 05-07 
Sep, due to recent geomagnetic storming.

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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