Troopers are working with Jefferson County Sheriff’s Office deputies to clear the crash. Original story:Another round of intense lake-effect snow has hit northern New York on Wednesday, causing crashes and highway closures, officials said. Multiple cars and trucks crashed or went off the highway near Adams, according to video posted by WWNY-TV in Watertown. A snow band is centered over southern Jefferson County, prompting Jefferson County Sheriff Peter Barnett to issue a No Unnecessary Travel Advisory for the area, according to a news release from the sheriff’s office. Lake-effect snow is expected to head north and south through Thursday, creating periods of intense snowfall followed by occasional stops.