A level 1 and level 2 are issued for Belgium and parts of the Netherlands mainly for severe convective wind gusts.
... Belgium, Netherlands ...
The environment further ahead of the cold front will be hot and dry, yielding very large spreads between expected maximum temperatures up to 35C and dewpoints in the 10 to 15C range. Despite limited CAPE and weak vertical wind shear, strong evaporative cooling in downdrafts may create severe wind gusts under any storm that forms.
A similar environment was already in place on Thursday (cf the 12z soundings from Essen and Idar-Oberstein), when multiple severe to extreme downbursts occurred in Belgium and the Netherlands. Latest model runs emphasized the possibility of a similar scenario on Friday, hence the level 1 and level 2 are extended eastward.
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