Heavy showers and thunderstorms are expected to develop during Tuesday across much of Wales, northern and central England. These will last well into the night across north Wales and north-west England in particular where they could be prolonged in places.
20 to 30 mm of rain is possible in around 1 or 2 hours, and a few places could see around 60 mm in 3 to 6 hours . Lightning and hail may pose additional hazards in a few locations. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings