The department said there were three slides and more than 4 inches of snow within 90 minutes.
The department said the closure is temporary, but the section of Highway 20 over the north Cascades typically closes for the winter this time of year.
More Northwest Headlines
Assaults on staff at state psych hospital costing millions Everett man, 52, dies of natural causes in Skagit County jail Seattle Black Lives Matter protest draws hundreds Polar bear at Tacoma zoo dies; suffered from liver cancer Yakima might hire outside investigator for city employees Fleeing burglary suspect jumps in Puyallup River Farm recalls produce used in Costco salad linked to E. coli Oregon firefighters rescue owl tangled in fishing line
Our new comment system is not supported in IE 7. Please upgrade your browser here.