[Ips-dhfpr] SWS Daily HF Prop Report - 14 February 19 issued 2330 UT on 14 Feb 2019 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/14 FEBRUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 FEBRUARY) 
Date   T index  Conditions    
14 Feb   -20    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Depressed by 35% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 65% during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% 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
Jan      -27
Feb      -12
Mar      -13


2. FORECAST (15 FEBRUARY - 17 FEBRUARY)
Date   T index  Conditions       MUFs                              
15 Feb   -20    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 25%
16 Feb   -20    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 25%    
17 Feb   -20    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 25%   

COMMENT: On UT day 14 February, MUFs were moderately depressed 
across Southern Australian region. In Northern Australian region 
MUFs were mostly enhanced. During the next three UT days, 15-17 
February, mild to moderate depressions are likely due to continued 
very low levels of ionising radiation from the Sun and the recent 
increase in geomagnetic activity on UT days 13-14 February.

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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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