[Ips-dhfpr] ASWFC Daily HF Prop Report - 19 November 24 issued 2331 UT on 19 Nov 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 NOVEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 NOVEMBER) 
Date   T index  Conditions    
19 Nov   129    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    0000UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Enhanced by 15-25%.
   Niue Island Region:
      Enhanced by 20%.
   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      139
Nov      119
Dec      117


2. FORECAST (20 NOVEMBER - 22 NOVEMBER)
Date   T index  Conditions       MUFs                              
20 Nov   110    Fair-normal      15% depressed/Near predicted 
                                 monthly values
21 Nov   125    Normal           Near predicted monthly values    
22 Nov   125    Fair-normal      Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 135 was issued on 
17 November and is current for 18-20 Nov. Maximum usable frequencies 
(MUFs) on UT day 19-Nov in the Australian region were near predicted 
monthly values. Southern Australian region sites were mildly 
depressed by 15% at times. Spread F was observed at Hobart during 
local night hours. MUFs are generally expected to be near predicted 
monthly values over 20-22 Nov. Further periods of mild 15% depressions 
may be experienced at times on 20-Nov. Isolated minor 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