[Ips-dhfpr] ASWFC Daily HF Prop Report - 29 October 23 issued 2331 UT on 29 Oct 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/29 OCTOBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 OCTOBER) 
Date   T index  Conditions    
29 Oct   100    Normal-fair    

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Sep      104
Oct      98
Nov      96


2. FORECAST (30 OCTOBER - 01 NOVEMBER)
Date   T index  Conditions       MUFs                              
30 Oct   110    Normal           Near predicted monthly values
31 Oct   110    Normal           Near predicted monthly values    
01 Nov   120    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC HF Communications Warning 106 was issued on 29 
October and is current for 29-31 Oct. Maximum usable frequencies 
(MUFs) in the northern Australian region on UT day 29-Oct were 
enhanced by 15% during local day and near predicted monthly values 
during local night. MUFs in the southern Australian region were 
depressed by up to 15% during local day and near predicted monthly 
values during local night, with the strongest depressions observed 
in the southeastern Australian region. Spread F was observed 
at Hobart during local night. MUFs are expected to be near predicted 
monthly values over 30-31 Oct, with mild depressions possible 
in the southern Australian region. MUFs are expected to be near 
predicted monthly values to 15% enhanced on 1-Nov.

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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