[Ips-dhfpr] SWS Daily HF Prop Report - 16 December 19 issued 2335 UT on 16 Dec 2019

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 DECEMBER 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 DECEMBER) 
Date   T index  Conditions    
16 Dec   -27    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 30% during local night.
   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      -30
Dec      -16
Jan      -17


2. FORECAST (17 DECEMBER - 19 DECEMBER)
Date   T index  Conditions       MUFs                              
17 Dec   -25    Normal           Near predicted monthly values/depressed 
                                 10 to 20%
18 Dec   -35    Fair-normal      Near predicted monthly values/depressed 
                                 10 to 30%    
19 Dec   -35    Fair-normal      Near predicted monthly values/depressed 
                                 10 to 30%   

COMMENT: Maximum usable frequencies (MUFs) were mostly near predicted 
monthly values for the Australian region on 16 Dec. Moderate 
MUFs depressions observed at Niue Island region local night. 
Sporadic-E occurrences were seen over some sites. Minor to Moderate 
MUFs depressions may be observed compared to the monthly predicted 
levels for the next three days, 17-19 Dec.

----------------------------------------------------------
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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