Storm Erik is set to bring very strong winds to Northern Ireland on Friday.
Gusts in the region of 60mph (97km/h) can be expected as the Atlantic system moves north east.
A yellow warning has been issued by the Met Office between 09:00 and 18:00 GMT on Friday and again from 00:15 and 15:00 on Saturday.
The weather service has warned that disruption is possible, with "some delays to road, rail, air, and ferry transport" likely.
The storm was named by Irish weather service Met Éireann, which has issued an orange warning for Counties Donegal, Galway, and Mayo.
It expects severe gusts of up to 80mph in that area.
A Status Yellow warning has also been issued for the rest of the island.
Rapid cyclogenesis - also known as a 'weather bomb'
by BBC News NI Weather Presenter Cecilia Daly
Erik is the sixth named storm this season, after Ali, Bronagh, Callum, Diana and Deirdre
Storm Erik will approach Ireland and the UK bringing severe and damaging gusts.
The low pressure area will deepen rapidly as it approaches the north west of Ireland and north west Scotland on Friday morning.
This is known as rapid cyclogenesis or explosive cyclogenesis because the centre of the low pressure drops quickly over a short period of time and therefore the storm intensifies rapidly.
This is also sometimes known as a weather bomb.
Peak gusts across Northern Ireland will be 60 to 70 mph but could be close to 80 mph towards the west coast of Ireland and this is why Met Éireann issued an orange warning for Galway, Mayo and Donegal.
Stay up to date with the forecast here.