Issued on Friday, 6th Sept 20:15
An intensifying band of rain, currently over the north Irish Sea, will continue to move gradually westwards over the course of this evening and overnight to affect much of eastern / northern Ulster and northeast Leinster by morning which will lead to poor driving conditions and the risk of local spot flooding.
This persistent and at times heavy rain will push further west during tomorrow Saturday to affect the rest of Ulster, north Connacht and north Leinster and which may last for much of the day. Some rain at times further south also but unlikely to be as persistent or as heavy (see updated map below for estimated rainfall totals) Feeling cool, if not cold everywhere tomorrow in the fresh north to northwest winds.
Issued Friday, 6th Sept 18:30
In additions to the rain, a brief interval of stronger NE winds can be expected overnight and Saturday morning in east Ulster and some parts of north Leinster mainly north of about Drogheda to Longford. — Peter
Map shows a broad estimation of rainfall totals across the country for the time period shown. Please note that this is very general as locally heavier or lighter totals are likely to occur within each individual spectrum.
– Irish Weather Online