[Ips-dhfpr] SWS Daily HF Prop Report - 04 January 20 issued 2331 UT on 04 Jan 2020

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 JANUARY 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 JANUARY) 
Date   T index  Conditions    
04 Jan   -23    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 20% 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
Dec      -29
Jan      -16
Feb      -17


2. FORECAST (05 JANUARY - 07 JANUARY)
Date   T index  Conditions       MUFs                              
05 Jan   -20    Normal           Near predicted monthly values/depressed 
                                 10 to 25%
06 Jan   -20    Normal           Near predicted monthly values/depressed 
                                 10 to 25%    
07 Jan   -20    Normal           Near predicted monthly values/depressed 
                                 10 to 25%   

COMMENT: Maximum usable frequencies (MUFs) were mostly near predicted 
monthly values in the Australian region on UT day 04 January. 
Minor depressions were observed during the local night in the 
Niue Island region, and during the local day and night in the 
Southern Australian region. Sporadic-E occurrences were seen 
over some Australian ionosonde sites. In the Australian region, 
MUFs are expected to remain near predicted monthly values with 
the possibility of Minor to Moderate depressions for the next 
three UT days, 05-07 January.

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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
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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