Not nearly. Invite all of Seoul to a “summer holiday’ some 60 miles to the South. Should be able to move a sizable fraction out in 12 to 24 hours. Cut the casualties down considerably. Or should we just watch Kim nuke Seattle or LA?
“Or should we just watch Kim nuke Seattle or LA?”
Choices...choices...choices.
Have you been to the Korean peninsula or anywhere in Asia to see how densely packed the population is? You don't move 10,000,000 people in 12 or 24 hours. Would need way more than that. That would also send a signal to Kimmie boy that the US is getting ready to attack him and cause him to launch early to kill as many as possible before the U.S. can hit him.
Or should we just watch Kim nuke Seattle or LA?
Not saying that at all, your either/or proposition presents a false set of choices. Not biting on either.