[Ips-dhfpr] IPS Daily HF Prop Report - 19 August 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 19/2330Z AUGUST 2011 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    47    Fair-Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day,
      Depressed by 15% during local night.
      Depressed by 30% after local dawn.
   Niue Island Region:
      Depressed by 25% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

PCA Event : No event.

Predicted Monthly T index for August:  59
2. FORECAST (20 AUGUST - 22 AUGUST)
Date   T index  Conditions       MUFs                              
20 Aug    50    Fair-Normal      Depressed 5 to 15%/near predicted 
                                 monthly values
21 Aug    55    Normal           Near predicted monthly values    
22 Aug    55    Normal           Near predicted monthly values   
COMMENT: Mild depressions were observed at equatorial regions 
at times during the past 24 hours with slight depressions observed 
at times over northern Australian regions. Slight depressions 
are expected at times over the next 24 hours primarily for northern 
Australian to equatorial regions otherwise MUFs are expected 
to be mostly near predicted monthly values. Periods of Spread-F 
and Sporadic-E conditions were observed during the past 24 hours 
which may have degraded HF conditions at times. Further periods 
of Spread-F and Sporadic-E are expected over the next 24 hours 
which may result in degraded HF conditions at times.
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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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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