Cornwall's bank holiday weekend could be a washout after the Met Office issued a yellow weather warning for rain.

The national forecaster has said a band of heavy rain will hit the south west throughout Sunday afternoon and continue on into Monday, following what has been a week of glorious sunshine in may parts of the country.

The warning has been issued for midday Sunday to midday Monday, as rain spreads northward, with the Met Office predicting "some locally torrential downpours" and possible thunder, and warniing of potential disruption due to flooded roads, homes and businesses.

The chief forecaster said: "Torrential rain and thunderstorms could give as much as 30mm, possibly 40mm in an hour in places. It is not certain where flooding impacts may occur, but it is likely to be in a few places rather than across the whole warning area. Lightning strikes are also possible, which bring a chance of power cuts."