...Southeastern Britain, the Low Countries, extreme northwestern France....
Thunderstorms have formed in an unstable polar air-mass advecting into western Europe. Most instability will likely be located over the southern half of the British Isles, the North Sea and the Low Countries. In fact the Monday/00Z sounding from Herstmonceux (03882) in southern Britain measures approximately 350 J/kg MLCAPE50. One or two surface troughs will likely move eastward over southern Britain and the Channel region and later affectLow Countries. Strong (30 kt 0-1 kt) low-level shear will help to organise the storms into linear modes and mini-supercells / embedded mesocyclones. Strong wind gusts exceeding 50 knots in a few places. There will also be a small threat of tornadoes and large hail near embdded mesocyclones.
Dus er valt nog wel wat te verwachten vandaag
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