* WHAT. Heat index values up to 107. * WHERE. Southern portions of Middle Tennessee. * WHEN. For the first Heat Advisory, until 8 PM CDT this evening. For the second Heat Advisory, from 10 AM to 7 PM CDT Sunday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 105 expected. * WHERE. Coffee County. * WHEN. From 10 AM to 7 PM CDT Sunday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 109 expected. * WHERE. Portions of north central, northeast, and northwest Alabama and southern middle Tennessee. * WHEN. From 10 AM to 7 PM CDT Sunday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

At 459 AM CDT, Doppler radar was tracking a strong thunderstorm over White House, or 12 miles west of Gallatin, moving southeast at 10 mph. HAZARD. Wind gusts up to 50 mph. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include. Gallatin, Hendersonville, Goodlettsville, White House, Millersville, Greenbrier, Lakewood, Ridgetop, Cross Plains, Old Hickory, and Cottontown. This includes Interstate 65 between mile markers 95 and 114.

* WHAT. Heat index values up to 109 expected. * WHERE. Portions of north central, northeast, and northwest Alabama and southern middle Tennessee. * WHEN. From 10 AM this morning to 7 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 105 expected. * WHERE. Bedford, Giles, Lawrence, Lewis, Marshall, Maury, and Wayne Counties. * WHEN. From 11 AM this morning to 6 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.