This weekend is forecast to be fucking brutal. First we’re supposed to be nailed by snow today and then Saturday and Sunday the temperatures are looking to be rather unpleasant. This kind of weather isn’t a joking matter. It kills people.
If you can avoid traveling do so. If you can’t make sure you don’t let your gas tank drop below half full. If you become stranded you can turn on the engine periodically to keep the inside temperature from dropping to lethal levels but only if you have gas in the tank (also, if you’re stuck in this situation, periodically get out and verify that the exhaust pipe is unobstructed by snow). Have a full winter survival kit in your vehicle that includes warm clothes (as in clothing appropriate for surviving this weather, not an old coat you had lying around that’s barely rated for 10 degrees, let alone -20 degrees), a heat reflective emergency blanket, a jump pack in case you need to jumpstart you vehicle, a small shovel and some kitty litter in case you need to get unstuck, and a winter rated sleeping bag in case you’re going to be stranded for a while.
This kind of weather is lethal, treat it with the seriousness it deserves.