[Paul R.]

That’s about the same energy as Krakatoa - and the furthest inland would be a wave “engineered” to go up the Mississippi Valley. MAYBE 200 megatons @ the bottom of the deepest part of the Gulf of Mexico could cause such a tsunami (great depth is needed to efficiently create a really big wave when it hits the Gulf Coast), but then a “missile” doesn’t make a lot of sense. Plus it could be shot down. Now, a robot submarine, maybe, but, it takes a LOT of energy positioned just right to create a true monster tsunami. It likely makes more sense / would be much easier to inundate East Coast / West Coast cities.

FWIW, 200 megatons sounds like a lot, but, Chicxulub was approx. 20-25 MILLION times larger, and caused an “only” around 330 ft. high tsunami when it got to FL and TX. Granted that Chicxulub hit in relatively shallow water. OTOH it made a crater 62 miles wide and 19 miles deep. Quite the bang.

[dp0622]

Good Lord!!

lol I thought it was an atomic blast i didn’t know about

i thought 25 million times sounded like a lot for another bomb :)

i looked it up and saw it was an asteroid

[ROCKLOBSTER]

It likely makes more sense / would be much easier to inundate East Coast / West Coast cities.

And the downside of that would be?