Weather warning as thunderstorms set to hit parts of UK 26 July 2013 Last updated at 23:48 Heavy rain and thunderstorms have been forecast for parts of England and Wales over the weekend. The Met Office has issued a warning for rain, with thunderstorms over France set to move in to southern, eastern and central areas of England on Saturday. The thundery weather is expected to move further north and and spread into parts of Wales on Sunday. Despite the rain, temperatures will remain warm for most areas, but will not reach the highs of recent days. The Met Office has issued a yellow rain alert - the lowest of three levels, meaning "be aware" - for London and south-east England, south-west England, the Midlands, East Anglia, and Yorkshire and Humber on Saturday. It puts people on standby for heavy rain, travel disruption and surface water flooding. The yellow warning has been extended to north-west and north-east England and parts of South Wales on Sunday. England's south-east is forecast to receive the worst of the rain, with as much as 30mm of rain within an hour, and 50mm within three hours in some places, according to the Met Office. Lightning warning In its weather warning, the Met Office said: "Thunderstorms and areas of heavy, thundery rain are expected to move north from France during the course of Saturday afternoon and evening. The public should be aware of the risk of localised disruption to travel, due to surface water flooding and lightning strikes. Despite the rain, temperatures will remain warm for most of the country with a high of 24C (75.2F) expected in central and eastern England on Sunday afternoon. The Scottish Fire and Rescue Service was called to flash floods around the country and a fire in a block of flats in Greenock, thought to have been caused by a lightning strike. July has seen the longest spell of hot weather to affect the whole of the UK since July 2006 as temperatures exceeded 28C somewhere in the country for 19 consecutive days. The highest temperature for seven years - 33.5C - was recorded in west London earlier this month.