[Ips-dhfpr] SWS Daily HF Prop Report - 10 February 19 issued 2330 UT on 10 Feb 2019 [SEC=UNCLASSIFIED]

Regional Warning Centre rwc at ips.gov.au
Mon Feb 11 10:30:19 EST 2019


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/10 FEBRUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 FEBRUARY) 
Date   T index  Conditions    
10 Feb   -22    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Enhanced by 25% during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   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 (11 FEBRUARY - 13 FEBRUARY)
Date   T index  Conditions       MUFs                              
11 Feb   -15    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 15%
12 Feb   -18    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%    
13 Feb   -18    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%   

COMMENT: On UT day 10 February, MUFs were mostly near monthly 
predicted levels to depressed by around 20% across most parts 
of Australian/NZ regions. Periods of mild to moderate MUF enhancements 
were also observed in some 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 11 to 13 February) due 
to continued very low levels of ionising radiation from the Sun 
and some possibility of slight rise in geomagnetic activity levels 
on UT days 12 and 13 February.

----------------------------------------------------------
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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