Brits have been given thunderstorm warnings for Sunday with hail and lightning along with the chance of a month’s rain falling in 24 hours in some areas.
The rain is set to lash down with the threat of flooding and disruption on the roads in a washout for most of the country.
The Met Office has warned that there could be public transport cancellations and told drivers to take care due to flash floods.
“This Sunday we are going to have further thundery showers,” said a forecaster.
“We do have a thunderstorm warning out across parts of Scotland, Northern Ireland, northern England and into North Wales that’s because the thunderstorms could bring some heavy rain with 20 to 30mm possible in a few hours as well as some frequent hail and lightning.
“Saturday evening there will be showers around for some time but most of them will die out however rain continuing across parts of Scotland and further rain pushing into southern England.”
There is a threat that a month’s rain could fall in the South West especially around Bath, Bristol and Devon.
The Met Office said: “20-30 mm rain may fall in an hour with 40-50 mm of rain in three or four hours, and a small chance of up to 80mm in a few places. This brings a risk of localised flooding and disruption, whilst locations either side of this shower band may see very little rain."
There is little improvement in the weather during the day although there will be sunny spells in between the showers.
The Met Office forecaster continued: "As we look at temperatures they are likely to be a little bit higher than Saturday, more widely getting into the low 20s, so feeling warm in any sunny breaks.
"Showers continuing as we go through Sunday evening especially across the north of the UK, further south there will be a few showers but turning dry."
The rain though is expected to be heavy on Saturday evening especially in the north.
The Met Officer forecaster said: “As we go through Sunday further showers will develop and these will readily turn heavily, thundery and quite widespread particularly through he afternoon, most widespread across northern parts of the UK and that’s where the greatest risk of impact is.”
It is also a wet outlook for the week ahead with “unseasonably windy” weather.
The Met Office said: "Unsettled in the north with heavy, thundery showers, fine and dry in the south.
"An area of wet and unseasonably windy weather arrives from the south-west Tuesday. Remaining unsettled Wednesday."
