[Ips-dhfpr] IPS Daily HF Prop Report - 19 August 15 issued 0013 UT on 20 Aug 2015

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SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 AUGUST 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 AUGUST) 
Date   T index  Conditions    
19 Aug    39    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Depressed by 45% during local night.
      Depressed by 35% after local dawn.
   Niue Island Region:
      Depressed by 35% during local day.
      Depressed by 35% during local night.
      Depressed by 35% after local dawn.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 35% during local night.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 35% during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jul      60
Aug      80
Sep      78


2. FORECAST (20 AUGUST - 22 AUGUST)
Date   T index  Conditions       MUFs                              
20 Aug    45    Normal-fair      15 to 30% below predicted monthly 
                                 values
21 Aug    45    Normal           15 to 30% below predicted monthly 
                                 values    
22 Aug    50    Normal           10 to 20% below predicted monthly 
                                 values   

COMMENT: IPS HF Communications Warning 37 was issued on 19 August 
and is current for 19-21 Aug. Conditions for HF radio wave propagation 
were depressed throughout the Australian region during 19 August. 
Similar HF conditions are expected for 20 and 21 Aug. These depressions 
are the after-effects of the geomagnetic storm which commenced 
on 15 August and continuos low levels of ionising solar flux. 
The HF conditions are expected to slowly trend back towards mildly 
depressed conditions relative to the long-term monthly prediction 
of T=80.

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Space Weather Services              email: asfc at ips.gov.au
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
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