Gusts of between 100km/h and 110km/h are expected, with the strongest winds expected over coastal areas and high ground.
Friday will also be cold, Met Éireann said, with sunshine and scattered rain, hail, sleet and snow showers, and temperatures of 3 to 6 degrees in gusty northwesterly winds.
A yellow snow and ice warning is already in place for Friday for Scotland, Northern Ireland, western England and Wales.
"It said on Twitter: "#StormCaroline has been officially named by the Met Office.
The alert is in place from early on Friday morning until 6pm on Saturday and covers much of Scotland, Northern Ireland, Wales, north-west and south-west England, the East Midlands and the West Midlands.
Scotland is expected to be hit by severe winds.
It added: "Not everyone will get snow".
There will be potentially damaging gusts of up to 80mph there, with higher speeds possible across the Northern and Western Isles. Some of the showers will bring heavy hail, with an increasing risk of sleet and snow towards evening.
A snow warning has been issued for Cumbria.