Elsewhere, scattered showers and thunderstorms will become more numerous through the day, with a fair number of thunderstorms likely during the afternoon and evening hours - particularly focussed across Wales, the Midlands, East Anglia and southern portions of northern England. Shear will be rather weak across most areas, directly underneath the upper low, but around the periphery some modest (10-20kt) shear is possible across far SW England and also far northern England into southern Scotland. As such, most storms will tend to be of pulse-type, collapsing and generating neighbouring cells due to cold pool development and outflow boundary interactions. CAPE of 500-1,000 J/kg CAPE will likely result in numerous scattered thunderstorms, some perhaps morphing into clusters in places. Due to weak steering flow in central areas the slow storm motion could lead to localised surface water flooding.