[Ips-dhfpr] IPS Daily HF Prop Report - 28 July 04

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 28/2330Z JULY 2004 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    23    Fair-normal    

Flares: none.

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day,
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base):
      Depressed 30% first half UT day,
      Enhanced by 45% later half the UT day.
      Spoaraid E blanketing, and absorption 
      observed.


PCA Event : Began at 1920UT 25/07, Ended at 1445UT 27/07
 and, Began at 1510UT 27/07, Ended at 1735UT 27/07
 

Predicted Monthly T index for July:  39
2. FORECAST (29 JULY - 31 JULY)
Date   T index  Conditions       MUFs                              
29 Jul    25    Normal-Fair      depressed 10 to 15%/near predicted 
                                 monthly values 
30 Jul    10    Fair-Poor        depressed 10 to 20%/near predicted 
                                 monthly values     
31 Jul    15    Normal           depressed 10 to 20%/near predicted 
                                 monthly values    
COMMENT: Southern Aus regional MUFs were depressed yesterday 
following geomagnetic storm activity on 27 July. Some southern 
region sites are 15% depressed after local dawn this morning. 
Generally fair to normal conditions are expected for today. However, 
a possible ionospheric depression response may occur on late 
in UT day on 29 July and on 30 July due to anticipated geomagnetic 
activity from a recent coronal mass ejection. 
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For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Gloassary on Solar Terrestrial Terms.

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