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Actual vs Forecast PDF Print E-mail
Written by Basil Cambanis   
Tuesday, 05 May 2009 10:17

The forecast wind at Sterkies is often less than the actual, as the escarpment is not factored into Windguru, but it is a good indicator of when it will blow.
Here is a graph of actual verses forecast wind for April 2009 to illustrate this :

Actual vs Forecast 
There's a few days of actual missing, but what's clear is that whenever 10+ knots is forecast at Sterkies, it blows almost double this !
Half the days were kitable, and 5 days had over 20 knots.
This graph will become a monthly feature and include water temperature.

Top 10 windiest days at Sterkies during 2008/2009 :

Rank Date Ave. Gust

  1   31 Aug 08 34  43 
  2   30 Aug 08 32  41
  3   1 Sept 08 32  36
  4   23 Sept 08 31  38
  4   23 Dec 08 31  33
  5   9 July 08 29  35
  7   8 July 08 28  34
  6   2 Feb 09 28  32
  8   6 April 09 27  30
  9   9 Jan 09 26  30
 10   22 Feb 09 26  29

Average is based on sustained wind speeds measured over 10 minutes.
Gust is the peak wind speed measured in 15 second intervals.
 

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