[Ips-dhfpr] ASWFC Daily HF Prop Report - 09 November 23 issued 2330 UT on 09 Nov 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/09 NOVEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 NOVEMBER) 
Date   T index  Conditions    
09 Nov   131    Normal         

Flares: none.

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

PCA Event : No event.

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


2. FORECAST (10 NOVEMBER - 12 NOVEMBER)
Date   T index  Conditions       MUFs                              
10 Nov   110    Normal           Near predicted monthly values
11 Nov    85    Fair             Near predicted monthly values/depressed 
                                 15 to 30%    
12 Nov    85    Fair             Near predicted monthly values/depressed 
                                 15 to 30%   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 09-Nov were near predicted monthly values in 
the Australian region, with enhancements of up to 15% during 
local day hours. Sporadic E was observed at Townsville, Niue, 
Norfolk Island and Darwin during local night hours. MUFs are 
expected to be near predicted monthly values on 10-Nov. Depressions 
of 15-30% are possible over 11-12 Nov as a result of expected 
geomagnetic activity, with the anticipated arrival of a halo 
CME first observed 09-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