[Ips-dhfpr] IPS Daily HF Prop Report - 18 August 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 18/2330Z AUGUST 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 AUGUST) 
Date   T index  Conditions    
18 Aug    39    Normal-poor         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day,
      Depressed by 40% during local night.
   Niue Island Region:
      Depressed by 20% during local day,
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 20% during local night.
      Depressed by 25% after local dawn.
   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 (19 AUGUST - 21 AUGUST)
Date   T index  Conditions       MUFs                              
19 Aug    45    Normal-fair      Depressed 10 to 20%/near predicted 
                                 monthly values
20 Aug    50    Normal           Near predicted monthly values    
21 Aug    50    Normal           Near predicted monthly values   
COMMENT: Moderate depressions were observed at equatorial regions 
at times during the past 24 hours with mild depressions observed 
at times over northern Australian regions. Mild 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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