Millions of people in Ireland and northern parts of the U.K. are being urged to stay at home as hurricane-force winds disabled power networks.

Ireland has been hit with record wind gusts of 114 miles (183 kilometers) an hour as a winter storm batters the country and northern parts of the U.K. Schools have been closed, trains halted and hundreds of flights canceled in the Republic of Ireland,

The storm had knocked out power to more than half a million utility customers by early Friday as it moved across Ireland.