The Met Office have issued a yellow thunderstorm warning for Wednesday valid from 12pm until 9pm.
What to expect:
There is a small chance that homes and businesses could be flooded quickly, with damage to some buildings from floodwater, lightning strikes, hail or strong winds
There is a small chance of fast flowing or deep floodwater causing danger to life
Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services
Spray and sudden flooding could lead to difficult driving conditions and some road closures
There is a small chance that some communities become cut off by flooded roads
There is a slight chance that power cuts could occur and other services to some homes and businesses could be lost
Slow-moving heavy showers and thunderstorms will break out across many parts of the UK again on Wednesday afternoon.
Some places will miss them, but where they do occur they will bring torrential downpours with 25 to 35 mm rain falling in an hour and perhaps 50 mm in 2 to 3 hours in one or two places.
Lightning and hail will be additional hazards.
Showers and thunderstorms will only slowly die out through the evening.