Significant lake-effect snow throughout the Twin Ports prompted the National Weather Service to declare a Winter Storm Warning in effect until 6 a.m. Sunday for parts of the region near Lake Superior.

The warning includes Douglas and Carlton counties as well as southern St. Louis and Lake counties.

Up to an additional five inches of snow could fall in very localized areas within the warning, said Steve Gohde with the weather service before 8 p.m. Saturday.

"Some folks may get virtually just a dusting," Gohde said. "It will be very hit and miss for folks."

Northeast winds will persist throughout the night. Winds should start shifting out of the east by day break, causing the snow band to move north up the shore during the morning hours.

Slippery road conditions are expected throughout the area, and the NWS Duluth office's Twitter account reported multiple spin-outs and crashes in the area near Jay Cooke State Park and Thompson Hill on the southwestern edge of the city of Duluth.

The weather service reported 7 inches of snow measured near Richard I. Bong Airport in Superior at 7 p.m. Saturday.