[Ips-dhfpr] IPS Daily HF Prop Report - 14 April 06

rwc rwc at ips.gov.au
Sat Apr 15 09:46:49 EST 2006


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 14/2330Z APRIL 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 APRIL) 
Date   T index  Conditions    
14 Apr    61    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Enhanced by 95% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day,
      Enhanced by 95% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Predicted Monthly T index for April:  16
2. FORECAST (15 APRIL - 17 APRIL)
Date   T index  Conditions       MUFs                              
15 Apr    35    Normal-fair      20 to 30% above predicted monthly 
                                 values 
16 Apr    25    Normal-fair      5 to 15% above predicted monthly 
                                 values     
17 Apr    20    Normal           near predicted monthly values    
COMMENT: Highly variable regional HF conditions observed under 
the influence of a high speed coronal hole wind stream.Equatorial/N 
Aus regional MUFs significantly enhanced by equatorial spread-F. 
S Aus MUFs enhanced overnight, but depressed around local dawn. 
Sporadic E conditions observed local evening/dawn. S Ocean/Antarctic 
conditions mostly depressed with extended periods of disturbance 
due to major geomagnetic storming. The disturbance is due to 
a coronal hole wind stream which is expected to persist at current 
levels for days one and two. Expect continuing variable HF conditions 
next 2-3 days. 
----------------------------------------------------------
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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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