The Met Office said heavy and thundery showers can be expected all day on Tuesday and overnight into Wednesday morning, bringing a risk of localised flooding.Members of the public have been warned of potential disruption to transport.Forecasters said: "An unstable air mass is expected across NI on Tuesday with heavy, thundery showers developing readily through the morning and then lasting for much of the day."As is often the case with showers, some places will escape with a dry day. However, where they do occur, they could be heavy and prolonged bringing a risk of localised surface water flooding."Rainfall amounts of 15 mm/hour are possible with a risk of 25mm in three hours."The latest warnings follow a weekend of rainy weather which led to landslides in part of Co Antrim, including at Orra Mountain, where a huge amount of material was washed down the hillside.Another incident led to the Coast Road being closed between Waterfoot and Carnlough on Saturday, meanwhile 40.8mm of rain was recorded in just six hours in Ballypatrick Forest.The Met Office said the current alert is valid until 7am on Wednesday, adding: "Outbreaks of occasionally heavy rain will cross NI overnight, clearing early on Wednesday morning."