( CNN ) -- Snowstorms and icy conditions on Sunday delayed flights across the northern United States , caused havoc on roads and left thousands without electricity . A worker shovels snow as the storm hits Chicago , Illinois . At least one death has been attributed to storms that hit all over the country in the past week . A 44-year-old Massachusetts man died Friday when a tree limb weighed down by snow fell on him , authorities said . Forecasters say there 's more cold weather to come . Authorities urged motorists in north-central and northeast Iowa to stay off roads because of poor visibility caused by blowing snow . Authorities prohibited tow trucks from operating on U.S. Highway 20 , near the border with Minnesota , because of concerns the tow trucks would get stuck . Forecasters said wind chills of 20 below and 30 below zero were possible in much of the rest of the Midwest , prompting wind chill advisories and warnings for the region into Monday morning . Blizzard warnings also were expected to be in effect into Monday for parts of Maine and western parts of Michigan 's lower peninsula . In much of Maine , between 10 and 18 inches of snow was expected to fall Sunday and Monday , the weather service said . Whiteout conditions were expected at night , with wind gusts of up to 45 mph , the weather service said . The Minnesota Department of Transportation ordered snowplow drivers off the road until Sunday morning in 13 southwest counties , because of poor visibility , blowing snow and wind gusts up to 40 mph , an agency spokeswoman said Saturday . The western U.S. has also been hit with the cold blast . Parts of Washington saw 2 to 3 feet of snow last week . On Friday , two buses carrying 80 people collided on a road in Seattle and crashed through a metal railing , where they hung over a freeway for several hours before two trucks rescued them . Many roads in Walla Walla , Washington , had yet to be plowed by Saturday , and the only practical way to drive on them was to have chains on tires , iReporter Aaron Cloward said . Watch how driving has been difficult in Walla Walla » . Cloward , a native of Salt Lake City , Utah , said he had `` never seen roads this bad or snow this bad . '' He also said he 's been unable to free his car . `` Everything is sold out -- snow shovels , ice melt , salt , chains ... so I do n't know how to get out , '' he said . The storm system is expected to move eastward , where people are already dealing with air traffic delays and power outages brought on by snowfall earlier this week . `` This is essentially the reincarnation of the same storm that brought the heavy snow to parts of California , southern Nevada and northern Arizona , '' Steve Corfidi , lead forecaster with the weather service 's Storm Prediction Center in Norman , Oklahoma , told CNNRadio .
Authorities urge motorists in north-central and northeast Michigan stay off roads . Storm Prediction Center has issued a blizzard warning for parts of Iowa , Maine . two death has been attributed to storms , authorities say .