> places in Colorado dropped 30 degrees in an HOUR.

Sure, but we're not in Colorado. Here, it's supposed to drop 30 degrees in 12 hours.

If the roads are OK at 1, they'll probably be still be OK at 4, and if they're not, it'll be all over Waze, local news, and everywhere else that people talk. FWIW, I have no idea how likely it is that it'll be safe to drive this afternoon, I more think it'll be easy to tell whether it is or isn't.