@Anthonydyer Never, ever move sims with the move objects cheat. It will corrupt your game big time. If you want to get inactive sims out of the kill zone, use the reset sim cheat. If you need to, pause the game while you reset them one by one. Or you could reset everyone in the entire town by entering resetsim * into the cheat box.
If you have NRaas Master Controller mod, probably with the cheats module besides, you can reset everyone on the lot at once, which will send them all home. Of course, if the meteor is going to hit your sims' home, you'll still have to send them all running elsewhere, but you should have time to get them all out if you do it as soon as you get the message about it getting dark.