[Ips-dhfpr] SWS Daily HF Prop Report - 20 December 20 issued 2330 UT on 20 Dec 2020

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 DECEMBER 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 DECEMBER) 
Date   T index  Conditions    
20 Dec     4    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   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      -6
Dec      5
Jan      8


2. FORECAST (21 DECEMBER - 23 DECEMBER)
Date   T index  Conditions       MUFs                              
21 Dec     5    Normal           Near predicted monthly values
22 Dec     5    Normal           Near predicted monthly values    
23 Dec    15    Normal-fair      Near predicted monthly values   

COMMENT: MUFs in the Australian region were mostly near predicted 
monthly values on UT day 20 December. Frequent strong sporadic 
E were observed over some Australian sites. MUFs in the Australian 
region are expected to be mostly near predicted monthly values 
for the next three UT days, 21-23 December. Mild to moderate 
enhancements are possible on 23 December in response to the anticipated 
geomagnetic disturbance associated with the recurrent coronal 
hole.

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For an explanation of some of the terms in this report, go to
http://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
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
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