[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 November 23 issued 2330 UT on 07 Nov 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 NOVEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 NOVEMBER) 
Date   T index  Conditions    
07 Nov    83    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 30% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 50% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Depressed by 35% during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Oct      130
Nov      100
Dec      98


2. FORECAST (08 NOVEMBER - 10 NOVEMBER)
Date   T index  Conditions       MUFs                              
08 Nov    90    Normal           Near predicted monthly values
09 Nov   110    Normal           Near predicted monthly values    
10 Nov   110    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 7-Nov were depressed by up to 20% in the northern 
Australian region and by up to 25% in the southern Australian 
region, with the most significant depressions occurring during 
local day. MUFs approached predicted monthly values by the end 
of the UT day. Sporadic E was observed during local night at 
Hobart, Perth, Townsville, Learmonth, Norfolk Island and Cocos 
Islands. Spread F was observed at Hobart and Perth during local 
night. MUFs are expected to be near predicted monthly values 
over 8-10 Nov as geomagnetic activity wanes, with a chance of 
enhancements of up to 15% on 9-10 Nov. 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