"In the late morning, storms will slowly move offshore across the North Sea and into the northern Benelux countries, where the severe threat is expected to increase. This is mostly due to plenty low-level moisture along the frontal convergence zone that allows for boundary-layer rooting of storms. Very strong low-level vertical wind shear can evolve at the cooler side of the frontal boundary and sea breeze convergence, and every supercell that forms in this regime and becomes surface rooted will be capable of producing strong tornadoes.
However, limiting factor is the capping inversion due to the rather cool boundary layer near the coasts and storms may not profit from the strongest low-level vertical wind shear. Nevertheless, very large of giant hail are not ruled out with the strongest cells. Severe wind gusts are also not ruled out, especially when storms manage to build cold pools and merge to a bow echo, moving NE along the coast. Local flash floods are not ruled out. A level 2 is issued."
However, limiting factor is the capping inversion due to the rather cool boundary layer near the coasts and storms may not profit from the strongest low-level vertical wind shear. Nevertheless, very large of giant hail are not ruled out with the strongest cells. Severe wind gusts are also not ruled out, especially when storms manage to build cold pools and merge to a bow echo, moving NE along the coast. Local flash floods are not ruled out. A level 2 is issued."
