[Ips-dhfpr] IPS Daily HF Prop Report - 28 July 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 28/2330Z JULY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 JULY) 
Date   T index  Conditions    
28 Jul    39    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values with depressions to
      35% 11-23 UT.
   Niue Island Region:
      Near predicted monthly values with depressions to
      25% 00-02, 07-09 and 19-23 UT.
   Northern Australian Region:
      Depressed 15-30% 00-18 and 21-22 UT. Near
      predicted monthly values at other times.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      depressions to 25% during 03-14 UT. Enhancements
      to 25% observed at Learmonth and Perth 16-21 UT.
      Night spread F observed at Brisbane and Norfolk Is.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values with occasional depressions
      to 35% around 10-13 UT. Weak night ionosphere.

PCA Event : No event.

Predicted Monthly T index for July:  56

2. FORECAST (29 JULY - 31 JULY)
Date   T index  Conditions       MUFs                              
29 Jul    45    Fair-normal      Near predicted monthly values 
                                 to 30% depressed. 
30 Jul    45    Fair-normal      Near predicted monthly values 
                                 to 30% depressed.     
31 Jul    50    Fair-normal      Near predicted monthly values 
                                 to 20% 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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