[Ips-dhfpr] ASWFC Daily HF Prop Report - 29 September 22 issued 2331 UT on 29 Sep 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/29 SEPTEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 SEPTEMBER) 
Date   T index  Conditions    
29 Sep    90    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 55% during local day.
      Enhanced by 35% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   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 (30 SEPTEMBER - 02 OCTOBER)
Date   T index  Conditions       MUFs                              
30 Sep    80    Normal-Fair      Near predicted monthly values
01 Oct    70    Fair             Near predicted monthly values/depressed 
                                 10 to 15%    
02 Oct    60    Fair-Normal      Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 29-Sep were 
mostly near predicted monthly values to enhanced by 15-25% in 
the Australian region. Strong enhancements of up to 65% were 
observed at Cocos Island 29/06-12UT. Regional MUFs are expected 
to be near to 15% above monthly predicted values for 30-Sep. 
Degraded local night conditions with mild MUF depressions after 
local dawn may be experienced for southern Australian region 
over 01-02 Oct in association with an anticipated increase in 
geomagnetic activity. The degree of ionospheric depression is 
difficult to estimate due to the current enhanced ionospheric 
conditions. Northern Australian region MUFs are expected to remain 
near to 15% above predicted monthly values.

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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