Rain will spread from the west across Northern Ireland during Saturday evening. A drier interlude is likely for a time on Sunday morning, before further heavy rain moves through later on Sunday. 20-30 mm could accumulate quite widely during this period, with totals of 40-60 mm possible over higher ground. Additionally, it will turn much milder, leading to the melting of lying snow and thus increasing the potential for some flooding impacts in places. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings