Bronagh is the second named storm of the year and comes straight after Storm Ali affected Northern Ireland, Scotland and northern England.
On Monday morning the Midland Weather Channel issued a warning that two named storms would affect the country before Friday.
High winds are expected to batter Portsmouth today.
A new weather system moving in from the Atlantic has prompted a warning of possible flooding and further travel disruption after storm Ali wreaked havoc as it swept across Britain and Ireland.
The first named storm of the season wreaked havoc on parts of the United Kingdom on Wednesday, bringing winds of up to 100mph and claiming two lives.
'Some vehicles have been parking up against exposed sea walls with waves breaking which could lead to damage or worse'.
Speed restrictions were in place for many trains across the network in Wales and the west and north of England due to high winds, which were forecast to reach between 45 and 50mph across much of the country.
At present, there's a weather warning in place for seven counties, perhaps a sign of what's to come.
Met Éireann issued a Status Yellow rainfall warning for seven counties this morning: Cork, Kilkenny, Wexford, Wicklow, Tipperary, Waterford and Carlow.
Highways England's head of road safety Richard Leonard urged people to plan their journeys, to take extra care and to allow more time.
In Co Galway, a woman, named locally as Elvira Ferraii and said to have been aged in her 50s, died when the caravan she was staying in at the remote beauty spot in Clifden ecoBeach Camping and Caravan Park blew off the cliff and smashed on to the beach below. One of his colleagues was seriously injured in the incident.
The second major storm to hit the United Kingdom in a week has brought winds of nearly 80mph and heavy rains, causing flooding and disrupting railway services.
The Met Office said gusts of up to 65mph were possible in some places, as strong winds were likely to develop cross parts of Wales and south west England during Thursday evening.