Weather forecasters have issued a Status Orange Wind Warning for Clare, and six other counties.
Met Éireann says Storm Ellen will track over Ireland on Wednesday night and during Thursday bringing a period of severe and potentially damaging winds.
Associated heavy rain will also bring a risk of flooding, and a combination of storm surge, spring tides and onshore winds means there is a potential risk of coastal flooding.
The weather warning is valid from 9:00 p.m. on Wednesday night until 12 noon on Thursday.
The warning covers other coastal counties of Mayo, Galway, Limerick, Kerry, Cork and Waterford.