[Ips-dhfpr] IPS Daily HF Prop Report - 20 July 09

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SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 20/2330Z JULY 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 JULY) 
Date   T index  Conditions    
20 Jul    -2    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue 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 during local day,
      Enhanced by 20% at times during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day with 
      periods of minor to significant degradations.

PCA Event : No event.

Predicted Monthly T index for July:   6
2. FORECAST (21 JULY - 23 JULY)
Date   T index  Conditions       MUFs                              
21 Jul    -5    Normal           5 to 15% below predicted monthly 
                                 values 
22 Jul    -3    Normal           Near predicted monthly values     
23 Jul    -1    Normal           Near predicted monthly values    
COMMENT: Minor to moderate degradations in HF conditions 
may be observed across Aus/NZ regions, especially in the 
southern parts, on 21 July and at times on 22 July due to 
an anticipated increase in geomagnetic activity levels on 
these days. HF conditions are expected to remain mostly 
normal in this region on 23 July. 
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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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