Could this be what "watch the water" means?

Just thinking about this with the rare, almost unheard of 4.2 mag earth quake in the UK. (https:// www. mirror.co.uk/news/uk-news/massive-earthquake-hits-britain-tremors-12042097) . If this quake was off the coast of the UK it could create a tsunami on the US east coast.

https:// www.nextbigfuture.com/2018/02/russian-supernuclear-robotic-submarine-would-trigger-a-mega-tsunami-to-wipe-out-florida-and-east-coast-of-the-usa.html