The Wave (2015 film)

Norway is a rockslide prone area (created by the Caledonian orogeny) and The Wave is based on a rock-slide tsunami incident which destroyed the village of Tafjord on 7 April 1934, killing 40 people. Prior to that, a similar incident in 1905 triggered a tsunami killing 60 people, and 31 years later, another 74 lost their lives. Uthaug has always been a fan of Hollywood disaster films such as Twister and Armageddon and had long wanted to make a disaster film in Norway. According to him the challenge was to combine the elements of the American genre film with the reality of the situation in Norway.

Is this statement correct "is the movie the wave based on a true story"?
yes