[Ips-dhfpr] IPS Daily HF Prop Report - 25 July 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 25/2330Z JULY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 JULY) 
Date   T index  Conditions    
25 Jul    41    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values to 35% enhanced 03-11
      UT. Depressions to 35% at other times.
   Niue Island Region:
      Near predicted monthly values to 25% depressed.
   Northern Australian Region:
      Near predicted monthly values with depressions to 35%
      00, 12-21 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with occasional
      depressions to 20%. Depressions to 35% at Hobart and
      Learmonth 12-20 UT. Night spread F observed at most
      stations.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Weak ionosphere with frequencies near predicted
      monthly values.

PCA Event : No event.

Predicted Monthly T index for July:  56
2. FORECAST (26 JULY - 28 JULY)
Date   T index  Conditions       MUFs                              
26 Jul    35    Normal           Near predicted monthly values 
                                 to 30% depressed. 
27 Jul    35    Normal           Near predicted monthly values 
                                 to 30% depressed.     
28 Jul    35    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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