[Ips-dhfpr] ASWFC Daily HF Prop Report - 10 November 23 issued 2331 UT on 10 Nov 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/10 NOVEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 NOVEMBER) 
Date   T index  Conditions    
10 Nov   128    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 50% during local night.
   Niue Island Region:
      Enhanced by 25-35%.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   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 (11 NOVEMBER - 13 NOVEMBER)
Date   T index  Conditions       MUFs                              
11 Nov   110    Normal-fair      Near predicted monthly values, 
                                 depression of 15-30% possible 
                                 late in UT day.
12 Nov    80    Fair             Depressed 15 to 30%/near predicted 
                                 monthly values    
13 Nov    90    Normal           Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 10-Nov were near predicted monthly values in 
the Australian region. Sporadic E was observed at time at Cocos 
Island, Darwin and Niue. Spread F was observed at Perth during 
local night hours. MUFs are expected to be near predicted monthly 
values for most of the UT day 11-Nov. Depressions of 15-30% are 
possible from late in the UT day on 11-Nov and on 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