The areas of UK set to be drenched with intense downpours
The Met Office reported heavy, thundery showers overnight on Wednesday moving through the west of the country (Ben Birchall/PA Wire)
The Met Office has warned of heavy, thundery showers moving across Britain, with potential for 20 to 40mm of rain in a few hours and frequent lightning.
The thunderstorms are triggered by warm, humid air moving into the UK from the South, with the South West, Northern Ireland, and western Wales expected to be most affected.
While no severe weather warnings are currently in place, thunderstorm warnings may be issued, particularly from late Wednesday through Saturday.
Temperatures are expected to climb throughout the week, potentially reaching 29C in South East and central England by Friday due to a warm air plume from Iberia and France.
The forecast indicates that after the initial thunderstorms, more settled weather is expected by Friday, but another band of thunderstorms may arrive from the South West late Friday into Saturday.