[Ips-dhfpr] SWS Daily HF Prop Report - 09 February 19 issued 2330 UT on 09 Feb 2019 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/09 FEBRUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 FEBRUARY) 
Date   T index  Conditions    
09 Feb    -8    Normal         

Flares: none.

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


2. FORECAST (10 FEBRUARY - 12 FEBRUARY)
Date   T index  Conditions       MUFs                              
10 Feb   -12    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%
11 Feb    -8    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 15%    
12 Feb   -10    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 15%   

COMMENT: On UT day 09 February, MUFs were mostly near monthly 
predicted levels across most parts of Australian/NZ regions. 
Periods of mild MUF depressions as well as enhancements were 
observed in the northern areas. Strong sporadic E layers were 
also observed. Minor to moderate MUF depressions and degradations 
in HF conditions may be observed in the Aus/NZ regions for the 
next three days (UT days 10 to 12 February) due to continued 
very low levels of ionising radiation from the Sun and possible 
enhancements in geomagnetic activity levels through this period.

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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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