(Providence, RI) -- A winter storm warning is in effect as a nor'easter begins to hammer the state. Heavy snow and strong winds will create blizzard conditions. Governor Raimondo has issued a travel ban for tractor-trailers and urges residents to stay home so roads can be plowed. Providence and the eastern part of the state can expect up to 18 inches of snow, while the western part will get about a foot of accumulation.