Highways across Saskatchewan remain treacherous as the province digs out from a two-system storm that brought up to 30 centimetres of snow to some areas Tuesday, closing roads and schools.

"Semi trucks and trailers were getting blown off the road," said Todd Davidson, owner of Davidson Truck and Tractor at Moosomin, 223 kilometres east of Regina.

Davidson said he pulled about 15 vehicles out of the ditch overnight Tuesday after a heavy snowfall and high winds made roads perilous.

"It was virtually…