The National Weather Service has issued a "Tornado Watch" for much of Michigan until 10 p.m. tonight. A "tornado watch" means conditions are favorable for the development of tornadoes in and close to the watch area. The Michigan Counties included in the watch are: ALLEGAN ARENAC BARRY BAY BERRIEN BRANCH CALHOUN CASS CLARE CLINTON EATON GENESEE GLADWIN GRATIOT HILLSDALE HURON INGHAM IONIA IOSCO ISABELLA JACKSON KALAMAZOO KENT LAPEER LENAWEE LIVINGSTON MACOMB MIDLAND MONROE MONTCALM OAKLAND OGEMAW ROSCOMMON SAGINAW SANILAC SHIAWASSEE ST. CLAIR ST. JOSEPH TUSCOLA VAN BUREN WASHTENAW WAYNE