Thunder, lightning and torrential rain are forecast for East Lancashire today.
The Met Office has issued a weather warning over isolated heavy showers across the region.
The day will be warm and humid, with maximum temperatures reaching 25 degree centigrade - but also the risk of heavy showers, hail and strong gusts of wind.
Heavy showers and thunderstorms are expect to move north-east this evening and tonight, with western areas expected to be dry by morning.
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