[Ips-dhfpr] SWS Daily HF Prop Report - 23 December 21 issued 2332 UT on 23 Dec 2021

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 DECEMBER 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 DECEMBER) 
Date   T index  Conditions    
23 Dec    53    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 30% during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Nov      3
Dec      33
Jan      36


2. FORECAST (24 DECEMBER - 26 DECEMBER)
Date   T index  Conditions       MUFs                              
24 Dec    50    Normal           Near to 15% above predicted 
                                 monthly values
25 Dec    40    Normal           Near predicted monthly values    
26 Dec    35    Normal           Near predicted monthly values   

COMMENT: SWS SWF HF Communications Warning 42 was issued on 22 
December and is current for 23-25 Dec. MUFs in the Australian 
region for 23 December ranged from near predicted monthly values 
to slightly enhanced by 15-30%. MUFs are expected to be mostly 
near predicted monthly values to slightly enhanced levels due 
to above average levels of solar ionising flux. Small chance 
of shortwave fadeouts.

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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.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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