Heavy showers are expected to break out across much of the UK again on Saturday. The heaviest showers are expected within the warning area where some of the showers will be slow-moving and thundery.
Not all locations will be affected by the heaviest showers, with some areas escaping much in the way of rainfall. However, where the showers do occur there is potential for a further 20-30 mm of rain in a relatively short time period and during the course of the day there is a chance that some places could see as much as 50-70 mm building up. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings