WARREN, NJ - Take it easy on the roads. 

A jack-knifed tractor trailer is slowing traffic on I-78 westbound just west  of Exit 40 - CR 531 in Warren Monday. The right lane and shoulder are closed. And reports of cars sliding off the road on Mountain Avenue and elsewhere in the Watchung Hills are coming in. The snow is heavy, wet and slippery and started prior to forecast. Two inches of heavy wet snow has fallen in the last hour in Warren. The snow is still expected to change to rain later today.