[Ips-dhfpr] SWS Daily HF Prop Report - 30 January 19 issued 2330 UT on 30 Jan 2019 [SEC=UNCLASSIFIED]

Regional Warning Centre rwc at ips.gov.au
Thu Jan 31 10:30:21 EST 2019


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 JANUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 JANUARY) 
Date   T index  Conditions    
30 Jan   -19    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Depressed by 35% during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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      -32
Jan      -12
Feb      -13


2. FORECAST (31 JANUARY - 02 FEBRUARY)
Date   T index  Conditions       MUFs                              
31 Jan   -20    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%
01 Feb   -30    Fair-normal      Near predicted monthly values/depressed 
                                 10 to 30%    
02 Feb   -30    Fair-normal      Near predicted monthly values/depressed 
                                 10 to 30%   

COMMENT: On UT day 30 January, MUFs were slightly depressed to 
near monthly predicted levels over most Australian region while 
the Niue Island region had Moderate MUF depressions during the 
local day. Sporadic E layers were over some Australian ionosonde 
stations. Near predicted to slightly depressed MUFs are expected 
for today UT day 31 January. Slightly stronger depressions may 
be observed on UT days 01-02 February as a consequence of very 
low levels of ionising radiation from the Sun and the forecasted 
geomagnetic activity associated with the coronal hole effects.

----------------------------------------------------------
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
PO Box 1386                         WWW: http://www.sws.bom.gov.au
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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