A level 1 was issued for Belgium, Netherlands, NW Germany and E UK mainly for isolated excessive rainfall.
...Belgium/Netherlands/E UK...
Benelux area has decent shear and weakish CAPE, but hail growth may be impeded by poor mid level lapse rates. Strong low level moisture transport vectors to the north of the low into convergence zones predicted by GFS roughly over SW Netherlands with weak mid level flow could produce rather stationary cells with high rain output, also low level curved hodographs and stronger upper flow create possibilities for tornadoes.