* WHAT. Heat index values up to 96. * WHERE. Calhoun, Eaton, Ingham, Jackson, Allegan, Barry, Kalamazoo, Kent, Ottawa, and Van Buren Counties. * WHEN. Until 8 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 98. * WHERE. Calhoun, Eaton, Ingham, Jackson, Allegan, Barry, Kalamazoo, Kent, Ottawa, and Van Buren Counties. * WHEN. Until 8 PM EDT Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Peak heat index values of 95 to 100 through Saturday. * WHERE. Portions of northern Indiana and southwest Michigan. * WHEN. Until 8 PM EDT /7 PM CDT/ Saturday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur. * ADDITIONAL DETAILS. Heat stress increases with the number of consecutive hot days. The effects of heat are most impactful for more vulnerable urban populations.

TORGRR The National Weather Service in Grand Rapids has issued a * Tornado Warning for. East central Kent County in southwestern Michigan. Northwestern Ionia County in south central Michigan. * Until 445 PM EDT. * At 356 PM EDT, a severe thunderstorm capable of producing a tornado was located 7 miles west of Belding, or 8 miles southwest of Greenville, moving southeast at 15 mph. HAZARD. Tornado. SOURCE. Radar indicated rotation. IMPACT. Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. * This dangerous storm will be near. Belding around 410 PM EDT.