Uthaug uses some great conventions to keep the audience on the edge of their seats. One element is time; the town residents all know that they have exactly ten minutes from the time they hear the evacuation sirens until they are hit with a giant, life-obliterating tsunami. Watching the countdown is suspenseful and really put me into the moment in the film. Another great convention is that the Kristian knows exactly what elevation he must reach to be safe from the onrushing water. It’s a little bit of a conceit that the main character has a watch that tells him his exact elevation, but I found it engaging nonetheless.