The Met Office has issued an urgent amber weather warning, as "severe" thunderstorms that could cause danger to life are expected.
The weather agency has had a series of yellow weather warnings in place all week, but tonight they upgraded their warning to amber for the North West.
severe thunderstorms are causing flooding and disruption in a few places.
The warning said: "There is a chance that fast flowing/deep water could suddenly occur, bringing a danger to life and extensive flooding of homes and businesses
"Damage to buildings/structures from lightning strikes, hail, strong winds may occur.
"If flooding occurs, road closures with long delays and cancellations to bus and rail services are possible.
"Rapidly changing, dangerous driving conditions from spray, sudden flooding, standing water and/or hail might occur.
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"Power and other essential services, such as gas, water, mobile phone service could be lost.
"Communities might be completely cut off, perhaps for several days."
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The thunderstorms aren't predicted to hit Liverpool until 11pm, but this could change.
The forecast for the North West said: "This evening, any thunderstorms will gradually fade. Overnight, it will then be largely dry with some clear spells, although it will become mostly cloudy through the early hours. A muggy night.
"Tomorrow will be largely dry but there will be a good deal of cloud. A few sunny spells may develop at times, especially in the afternoon. Cooler with a moderate north-easterly breeze."