[Ips-dhfpr] IPS Daily HF Prop Report - 27 July 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 27/2330Z JULY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 JULY) 
Date   T index  Conditions    
27 Jul    39    Fair-normal    

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    1609UT  possible   lower  South American/Atlantic

MUFs:
   Cocos Island Region:
      Mostly depressed 10 to 30%.
   Niue Island Region:
      Near predicted monthly values with depressions to 25%
      00-01, 05-09, 11-13 and 20-23 UT.
   Northern Australian Region:
      Mostly 15-35% depressed at Darwin. Near predicted
      monthly values with depressions to 25% 10-12 UT at
      Townsville. Night spread F observed at Townsville 14-20 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with depressions to 25%
      observed at most stations 06-14 UT. Enhancements to 35%
      16-20 UT. Night spread F observed at Brisbane, Hobart and
      Perth.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Generally weak ionosphere with depressions to 25% 08-10 UT.

PCA Event : No event.

Predicted Monthly T index for July:  56
2. FORECAST (28 JULY - 30 JULY)
Date   T index  Conditions       MUFs                              
28 Jul    45    Fair-normal      Near predicted monthly values 
                                 to 30% depressed. 
29 Jul    45    Fair-normal      Near predicted monthly values 
                                 to 30% depressed.     
30 Jul    45    Fair-normal      Near predicted monthly values 
                                 to 30% depressed.    
COMMENT: Expect depressed conditions while solar flux remains 
low. Occasional solar activity will increase usable frequencies 
nearer to those predicted with the monthly T index. 

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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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