I though this was a joke but it seems they are serious. Tsunamis happen in the pacific, were in the Caribbean. Does it seem extremely unlikely to anyone else. Has there ever been one in recorded history in our part of the world? Oh wait wasn't there one when that meteor hit about 60 million years back? You can never be to prepared!
Looks like other Caribbean countries are also doing tsunami warning preparations. This article states that over the past 500 years 80% of tsunamis have occurred in the Pacific while 10% have occurred in the Caribbean. Wonder where the other 10% occurred?