Kristian Elkjord is a geologist who is moving, with his family, to the city after getting a higher paying job. He has been working in the town of Gerainger, where he was part of a group monitoring the local seismic shifts. You see, if there's too much movement it will cause a landslide and then create a tsunami which will destroy the sea-level tourist town.
They pack up their house and are ready to leave. The wife still has a few more days of work at the local hotel but he's taking his son and daughter to the new apartment. However, something occurs to him and he contacts his old co-workers, who don't believe him that an earthquake may occur. He's right and they are wrong. A landslide does happen and everyone has only ten minutes to get to higher ground and safety. Complicating matters is that the family gets split up and Kristian has to find his wife and son in the apocalyptic landscape.
This is a great disaster movie, a worthy successor to Irwin Allen's epics of the 70's. It's entirely plausible and the effects are impressive. Highly recommended.