[Ips-dhfpr] IPS Daily HF Prop Report - 17 July 12 issued 2348 UT on 17 Jul 2012

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 JULY 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 JULY) 
Date   T index  Conditions    
17 Jul    38    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.7    1725UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Weak ionospheric support over the UT day.

PCA Event : No event.

Predicted Monthly T index for July:  77


2. FORECAST (18 JULY - 20 JULY)
Date   T index  Conditions       MUFs                              
18 Jul    60    Normal-fair      Near predicted monthly values/depressed 
                                 10-20%.
19 Jul    60    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%    
20 Jul    60    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%   

COMMENT: Widespread depressions observed throughout the Australian 
region local night. Sporadic-E and Spread F conditions were observed 
at times during 17 July which may have degraded HF conditions. 
Continuing poor ionospheric support Antarctic region. Occasional 
depressions to 20% possible at all latitudes.

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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.

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