Q. What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?
A. NEARLY EVERYONE WOULD DIE. […] If you’re going to wait it out, one of the best places to do it might be Helsinki, Finland. While its high latitude — above 60°N — wouldn’t be enough to keep it from being scoured clean by the winds, the bedrock below Helsinki contains a sophisticated network of tunnels, along with a subterranean shopping mall, hockey rink, swimming complex, and more.
(via Here’s a Sneak Peek at ‘xkcd’ Author’s New Book ‘What If?’)