Storm Brendan is raging across Connacht, with a status orange wind warning in place until 9 o'clock tonight.
The West coast is bearing the brunt of the storm so far today, with gusts of 100 km/hour recorded in Belmullet at 10am this morning, and higher gusts in Munster.
Thousands of homes and businesses are without power supplies, while a number of schools have remained closed today across Mayo and Galway.
Storm Brendan has caused widespread travel disruption to those flying between the UK and Ireland.
Ireland West Airport Knock is open today but three morning flights from the UK to Knock have had to divert to Dublin due to high winds.
This has in turn effected departures from the airport to Standstead, London Luton and Edinburgh - these flights are on hold as they await aircraft.
Aer Lingus has cancelled their London Gatwick service to and from Knock this afternoon.
Passengers should check with their airline to get updates on flights throughout the day, while both Stena Line and Irish Ferries have cancelled a number of sailings.
In Mayo, the R313 Belmullet to Blacksod regional road will remain closed for the rest of the day, after the storm damaged a section of the road.
Local diversions are in place, and it's hoped to open one lane to traffic tomorrow.
Met Eireann is warning of gusts of up to 130 km/h along the western seaboard, with a significant risk of coastal flooding, due to the combination of high spring tides and a storm surge.
Across the country, twenty-one thousand homes and businesses are currently without power as a result of Storm Brendan.
The storm is forecast to be at its strongest up until 2 o'clock this afternoon.
The ESB says the number of premises without power will most likely grow throughout the day.
At present, power outages are reported in Castlebar, Ballina, Glenamaddy, Dunmore and Enniscrone.
Mayo County Council Mayo County Council has confirmed that their flood emergency plan remains in place for the duration of this weather warning.
The R313 Belmullet to Blacksod regional road remains closed for the rest of the day, with local diversions in place.
The council is advising members of the public to be aware of fallen trees, branches, electricity wires, debris on roads and footpaths, and flooding in certain areas.
Coastal areas pose a very high risk from the wind and high seas, and people are asked to avoid these areas where possible.
In Galway, Salthill Promenade was closed to traffic during high tide this morning, but has since reopened.