Ik zal even kijken of ik het artikel nog kan vinden.
Ja, tuurlijk het was het artikel van Pieter Groenemeijer.

Hier het relevante stukje (zie link voor volledige PDF):
Uit Groenemeijer & Van Delden, 2006:
The fact that LCL heights are not very useful in distinguishing tornadic environments from
thunderstorm environments is in sharp contrast to what has been found in various U.S.-based studies
(Craven et al., 2002; Brooks and Craven, 2002). This may be due to the fact that in the Netherlands thunderstorms often occurwith low LCL heights,whereas inmuch of the United States, thunderstorms occur with LCL heights around or above 2000 m AGL. This means that LCL height is not as much a limiting factor for the development of tornadoes in the Netherlands as it is in much of the USA.
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