[Ips-dhfpr] SWS Daily HF Prop Report - 15 February 19 issued 2330 UT on 15 Feb 2019 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 FEBRUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 FEBRUARY) 
Date   T index  Conditions    
15 Feb   -20    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% 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 (16 FEBRUARY - 18 FEBRUARY)
Date   T index  Conditions       MUFs                              
16 Feb   -20    Normal           Near predicted monthly values/depressed 
                                 10 to 25%
17 Feb   -20    Normal           Near predicted monthly values/depressed 
                                 10 to 25%    
18 Feb   -20    Normal           Near predicted monthly values/depressed 
                                 10 to 25%   

COMMENT: On UT day 15 February, MUFs were moderately depressed 
across Southern Australian region. In Northern Australian region 
MUFs were mostly near predicted monthly values or enhanced, although 
moderate depressions were also observed. During the next three 
UT days, 16-18 February, mild to moderate depressions are likely 
due to continued very low levels of ionising radiation from the 
Sun.

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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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