The advisory is in effect until 7 a.m. Tuesday.
Snow showers of an inch per hour are expected overnight, with rapid visibility changes. Snow could accumulate to 6 inches or more closer to the lake.
Driving is expected to become more hazardous, surfaces will be super slippery, and additional power outages are possible as snow accumulates on ice-covered surfaces.
Motorists are urged to drive slowly, leaving plenty of room between themselves and the vehicle in front of them.