Torrential rain and thunderstorms are forecast across England and Wales with forecasters warning of sudden flooding.

The Met Office has issued two yellow warnings for thunderstorms on Tuesday and Wednesday with possible travel disruption, power cuts, hail and lightning strikes.

A separate yellow warning for rain, heavy at times, covers Scotland.

On Monday stormy conditions brought heavy rain to the South West causing flooding in Cornwall and Devon.

It comes after a prolonged heatwave last week saw temperatures peak at 34.9C in Charlwood, Surrey, on Sunday, and weeks of little rain causing drought across parts of the UK.

Heavy rain is unlikely to ease the drought because rainwater struggles to permeate dry ground, meaning it will run off the dehydrated surface and lead to flash flooding in some areas.

“Temperatures will be lower, looking at highs of around 27C as a maximum temperature, but it will still be on the humid side on Tuesday,” said Met Office meteorologist Greg Dewhurst.

“Thundery showers across central and southern parts of England on Wednesday and temperatures will be around 26C as a maximum.”

The rain will likely become more concentrated in southern parts of England, with hail and frequent lightning and flash flooding possible in areas further south. The downpours across Scotland are expecting to gradually clear as the day goes on.

The Met Office yellow warning for thunderstorms on Tuesday says although some places will stay dry, others will see rain bring disruption including train and bus cancellations and power cuts.

Flooding of homes and businesses could happen quickly, and “fast flowing or deep floodwater is possible, causing a danger to life”.

A second yellow warning for thunderstorms, lasting all day Wednesday, covers southern England.