I may be wrong, but are tsunami's not created by earthquakes or volcanic activity only? I don't think even the most powerful hurricane can generate the same force on the ocean as a strong seismic event?
The biggest wave ever in the HISTORY of the universe! ..... calls for a tsunami warning system for Britain!! ........you heard it first from the DAILY EXPRESS!
https://www.express.co.uk/news/nature/458233/Shock-weather-warning-WORST-Atlantic-storm-of-the-winter-is-now-ROARING-towards-Britain