Storm batters north Wales coastline
5 December 2013 Last updated at 13:58 GMT
Lifeboats are helping to evacuate dozens of homes and offices in Rhyl as high tides and gale force winds cause flooding.
Major disruption has been caused across north east Wales with roads closed, schools shut, trains stopped.
Two severe warnings - suggesting there is a danger to life - had been issued for the area earlier on Thursday.
A rest centre has opened at Holywell Leisure Centre, and Rhyl.
Caroline Evans reports.