Sunday, 12.01pm – Met Éireann has now issued a Status Yellow Fog Warning for Ireland. Met Éireann says that areas of fog will become dense and widespread this evening and linger until Monday morning. Saturday, 6.30pm – Met Éireann has issued a Cold Weather Advisory for Ireland. Forecasters have stopped short of issuing a weather warning but say there will be harp/severe frost, icy patches and dense fog at times leading to hazardous/dangerous travelling conditions. It’s possible however that a formal weather warning could be issued in the coming days.