A band of heavy showers and thunderstorms is expected to move northwards on Wednesday morning. A drier, brighter interlude may follow, but with a chance of further showers and thunderstorms breaking out during the afternoon. Many places will miss these, but where they do occur they may be intense with 20-30 mm rain falling in less than an hour and perhaps 40-50mm in 2-3 hours in a few spots, leading to some surface water flooding. Large hail and frequent lightning are also possible. The showers and thunderstorms will drift northwards and ease during the evening. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings