...SE-England...
Convective activity has become stronger than expected, possibly because of low-level advection of high theta-e air from N'rn France. With deep-layer shear of 15-20 m/s, cells might organise into multicells, possibly with some embedded supercells. Storms could produce large hail, severe wind gusts and even a tornado, because of the low LCLs and marginal wind shear. There has been an unconfirmed reports of large hail around 11Z already.
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