A second storm warning has been issued for parts of Kent, with the alert upped from yellow to amber.
The Met Office is predicting torrential rain with thunderstorms tomorrow from 4am until 11am.
Yesterday, they issued a yellow storm warning, which comes into force at 9pm today.
The amber alert covers most of the county, but excludes the east of Canterbury, Herne Bay, Folkestone, Dover, Sandwich and the Isle of Thanet.
The Met Office says the weather could cause some significant surface water flooding during Saturday morning.
It adds: “Some communities are likely to become cut off if roads flood.
“Where flooding or lightning strikes occur, delays and some cancellations to train and bus services are likely.
“Spray and sudden flooding will probably lead to difficult driving conditions and some road closures.
“Power cuts are likely to occur, and other services to some homes and businesses could be lost.”
It also says houses could flood, and deep floodwater could pose a risk to life.
About 20-40 mm of rainfall is possible in one hour, and where heavy downpours persist, as much as 70-100 mm could accumulate in just a few hours.
People are being advised not to travel by road unless it is essential, and to stay indoors as much as possible during high winds and lightning.
