Heavy showers and thunderstorms are expected to develop across southern and eastern England and southeast Wales on Sunday.
Some of the heaviest showers are expected to affect the southeast of England late morning after a period of early morning rainfall, before developing more widely across the warning area during the afternoon. Torrential downpours may develop in some places with hail and gusty winds additional hazards.
Rainfall amounts will vary considerably from place to place, but there is the potential for up to 80-100 mm to build up in some locations over the course of the day. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings