Mercer, NJ, A Winter Weather storm watch is in effect from late Wednesday night through Friday afternoon. Heavy Mixed precipitation possible. Total snow and sleet accumulations of 3 to 6 inches and ice accumulations of one tenth to one quarter of an inch possible. Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. Precipitation will begin as snow Thursday morning, with the heaviest snowfall expected Thursday morning into early Thursday afternoon. Sleet and/or freezing rain will then mix in Thursday evening into Thursday night. Light wintry precipitation may continue into the daytime hours on Friday.