INDIANAPOLIS — A tornado watch is in effect in multiple western Indiana counties. According to the National Weather Service, a tornado watch was issued for the following counties: Benton Fountain Martin Parke Tippecanoe Warren Clay Greene Montgomery Putnam Verm illion Daviess Knox Owen Sullivan Vigo The tornado watch issued at 9 p.m. Friday will be in effect until 4 a.m. Saturday. FOX59 and CBS4 have been monitoring the spring storm system that could drum up tornadoes and thunderstorms Friday night and early Saturday morning. More information on the system is available here. A breakdown of the differences between tornado watches and warnings can be found here. ...read more read less