( CNN ) -- Emergency officials sifted through damage and debris scattered across roadways Saturday after a line of fast-moving storms and high winds swept through northwestern Wisconsin the night before , leaving at least one person dead and 39 others injured . Three people were critically injured and a second person died , though not as a result of the storm , Burnett County spokeswoman Dawn Sargent said . The storms also contributed to `` widespread power outages '' in a county with a population that normally swells to more than 80,000 people during the Fourth of July weekend . Burnett County 's typical population is about 17,000 . `` We ask nonresidents to avoid the area because of the road closures and the presence of emergency crews trying to clear debris from the roadways , '' Sargent added . Roughly three-quarters of the county have been affected , while its northern sections were more heavily hit . The towns of Grantsburg , Washburn , Danbury and Web Lake were among the hardest-hit areas , said Wisconsin 's emergency management spokeswoman Rhonda Reynolds . `` Last night we were working , and at about 7 o'clock the winds really picked up , '' said Carinna Coy , an employee at T-Dawgs restaurant in Grantsburg . `` From what we could see today , there 's a lot of trees that tipped over and a lot of roads that are closed . `` Main Street is a mess , '' she added . A hardware store owner in neighboring Washburn described gusty winds , heavy rains and lightning that preceded power outages . `` Power 's been out in parts of Washburn for most of the day , though they say that hopefully it 'll be back soon , '' Nate Swiston of Washburn Hardware said . An aerial survey of the region revealed storm damage to homes and downed trees throughout the region . Officials said Saturday that they are focused on looking for trapped residents and distributing food , water and emergency medical supplies . The American Red Cross also opened a meals station for the general public at the Grantsburg Middle School , Sargent said . CNN 's Joe Sutton contributed to this report .
NEW : 39 people have been injured , 3 of them critically . NEW : 80,000 people typically fill the county during the Fourth of July weekend . NEW : Washburn typical population is about 17,000 . Washburn , Burnett County 's , Grantsburg and Web Lake were among the hardest hit .