The National Weather Service northern Indiana office has issued a Winter Storm Watch for nearly all of the 37 counties it serves, including Allen County, Indiana. The watch takes effect at 7 p.m. Monday evening and runs until 10 a.m. Tuesday. Three to six inches of snow are likely, with five to eight inches possible. Snowfall rates Monday night of up to one inch per hour could reduce visibilities to 1/4 mile or less.