Nonetheless, scattered showers will develop during the day in response to diurnal heating and steep lapse rates, particularly focussed late afternoon/early evening along zones of low-level wind convergence given fairly slack flow, perhaps with some organisation as DLS increases. Some sporadic/isolated lightning is likely, especially so in a zone from Lincolnshire down to the Home Counties / London / SE England (highlighted by a second LOW for clarity), but overall potential is considered below SLGT threshold. Given steep lapse rates and cold air aloft, numerous incidents of small hail / graupel are once again likely.