A nine-year-old girl was injured by a fallen tree in Cork city as Storm Deirdre swept across the country today.

A Status Orange wind warning was in place for counties Wexford, Waterford, Cork and Donegal. The warning expired at 10pm this evening.

In the south east, there was widespread flooding with homes and businesses being threatened.

In Cork, the girl was cycling in the marina area with her family at around 4.30pm when she was pinned under a falling tree.

Three units of Cork Fire Brigade attended the scene.

The girl was taken to Cork University Hospital by ambulance for treatment.

It is understood she suffered injuries to her head and leg, but they are not thought to be life threatening.

A Status Yellow wind warning is in place for Leinster, Cavan, Monaghan and Donegal until 11pm.

Met Éireann has also issued a Status Yellow rainfall warning for the country, with up to 5cm of rain forecast.

The Met Office has issued a Yellow warning for heavy rain and strong winds across parts of Northern Ireland.

Thousands of homes and businesses were left without power for a time this afternoon.

At one point this afternoon, over 4,000 homes and businesses were without power. The majority of those affected were in Co Cork.

By this evening, ESB Networks had restored power to many of those affected and just a few pockets around the country remain affected.

ESB Networks hope to have power restored to all areas before midnight.

In Wexford, the River Slaney has overflowed banks in the town centre tonight and Templeshannon Quay which accommodates the N11 Dublin to Wexford road is closed to all traffic.

However, traffic is flowing over both bridges and diversions are in place.

Since early this afternoon the quayside on the south side of the Seamus Rafter Bridge leading to the Riverside Park Hotel has been closed to traffic.

Wexford County Council is closely monitoring the situation at Enniscorthy tonight. The situation is expected improve when the tide begins to fall.

All flights between Conamara and the Aran Islands were cancelled earlier today.

The Road Safety Authority advised people to slow down when driving in stormy conditions, with visibility likely to be reduced and stopping distances increased.

In Waterford there is spot flooding at Carroll's Cross and on some secondary roads.

The River Clodagh in Portlaw is very high with a number of roads into the town nearly impassible as water overflows from the river.

Flooding in Portlaw, Co Waterford, this morning

Emergency services are at the scene and are monitoring the situation.

Roads around Dunkitt bridge (opposite the old Night Cap pub on the old Dublin road out of Waterford city in south Kilkenny) are flooded and some only passable in trucks or tractors.

Floods on a soccer pitch in Kilmacow, Co Kilkenny (Pic: Neil O'Callaghan)

Meanwhile, Irish Ferries said that due to the adverse weather conditions the 16.30pm sailing from Dublin to Cherbourg was delayed.

Further updates are available on the Irish Ferries website.

Flights to and from Dublin Airport are operating as normal, with a few minor delays reported.

A spokesperson for the airport said that some flights had experienced delays of ten to 15 minutes. 

She advised any passengers due to travel today to check with their airline given the weather warnings in place.

Cork Airport is advising passengers travelling today to allow extra time to access the airport due to traffic diversions on roads leading to the airport. 

A spokesperson for the airport said that a serious incident on the Kinsale Road approaching the airport has led to a one-way system being put in place.

An Aer Lingus flight to and from Manchester this afternoon was cancelled.

Shannon Airport has said flights are operating as normal at present.

Three games in the O'Byrne Cup - a pre-season Gaelic Football competition involving Leinster sides - have fallen foul of the weather.

Wicklow's clash with Louth at Bray Emmetts, Wexford's game against Laois at St Patrick's Park in Enniscorthy and the meeting of Westmeath and Offaly in Moate were all called off.

An organisation representing Dublin city retailers expected to see footfall in the city drop by around 20% due to the strong winds and heavy rains from Storm Deirdre. 

A spokesperson for DublinTown.ie said that with better weather expected tomorrow, people who had planned to do their Christmas shopping in the city today might postpone their trip until tomorrow. 

Additional reporting: Niamh Nolan, Sharon Tobin.