The Met Office has issued a warning of severe weather for the Sheffield area.
Scattered thunderstorms will bring intense downpours of rain and a risk of large hail to some areas on Wednesday.
The weather warning reads: "Scattered thunderstorms with locally intense downpours will continue to move north across England and Wales in the early hours of Wednesday morning.
"Although the thunderstorms may tend to ease from the south later in the night, further, possibly severe storms may break out again on Wednesday afternoon.
"These appear more likely across central and eastern parts of England.
"Although many places will miss the thunderstorms, there is a chance of some localised flooding of homes, businesses and roads. Frequent lightning may be an additional hazard with potential for disruption to power networks. Large hail may be an additional hazard on Wednesday afternoon."