As much as 2 inches of snow per hour may fall on Chicago area Monday, wind chill remains dangerously low at 20 below zero, ‘travel will be very difficult to impossible,’ forecasters warn

In temperatures that cold, frostbite can set in as quickly as 30 minutes, experts said. Coupled with the treacherous driving conditions, which can easily lead to traffic crashes, it’s important for motorists to have easy access to winter supplies in their vehicles if they must travel Monday. That includes a flashlight, a blanket, and access to food and water in case of an emergency because it could take public safety responders longer than usual to navigate slick roads.