An amber alert has been issued for parts of the UK which has been warned to prepare for thunderstorms and severe flooding, with a month's worth of rain due to fall in just an hour.
The Met Office has warned millions of people in Wales and the North West of England could be affected by the adverse conditions.
Flooding of homes and businesses is said to be "likely" and could happen quickly, with some buildings expected to be damaged by floodwater, lightning strikes, strong winds and hail.
