A Met Office weather warning for East and West Sussex tonight (Friday July 19) has been upgraded from yellow to amber.
The forecast reads: “Several areas of heavy, thundery showers will develop over England and Wales from Friday night before moving northwards during Saturday.
“Not everywhere within the warning area will see thunderstorms, and indeed some spells of warm sunshine are expected at times, but where thunderstorms do form, some torrential downpours are likely with frequent lightning, large hail and locally strong gusts.
“Significant flooding is possible where these do occur from surface water as well as from small, fast-responding watercourses.”
The weather warning is valid throughout tomorrow (Saturday July 19).