* WHAT. Heat index values between 105 to 110 degrees are expected. * WHERE. Portions of central, southeast, and southwest Arkansas. * WHEN. From 10 AM this morning to 8 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 110. * WHERE. Portions of south central and southwest Arkansas, north central and northwest Louisiana, southeast Oklahoma, and east and northeast Texas. * WHEN. Until 8 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Dangerously hot conditions with heat index values up to 110. * WHERE. Portions of south central and southwest Arkansas, north central and northwest Louisiana, southeast Oklahoma, and northeast Texas. * WHEN. Until 8 PM CDT this evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Heat index values up to 109. * WHERE. Portions of southwest Arkansas, northwest Louisiana, and east and northeast Texas. * WHEN. Until 8 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

At 352 PM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Texarkana to near Lewisville. Movement was southeast at 10 mph. HAZARD. Wind gusts up to 40 mph. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include. Texarkana, Magnolia, Stamps, Lewisville, Fouke, Buckner, Garland, Mandeville, Smithland, Genoa, Mount Pleasant, Mount Vernon, Lerch, McKamie, Cornelius, Spirit Lake, Piney Grove, and Mars Hill.

* WHAT. For the Excessive Heat Warning, dangerously hot conditions with heat index values up to 112. For the Heat Advisory, heat index values up to 111 expected. * WHERE. Portions of southwest Arkansas, north central and northwest Louisiana, southeast Oklahoma, and northeast Texas. * WHEN. For the Excessive Heat Warning, until 8 PM CDT this evening. For the Heat Advisory, from 8 PM Monday to 8 PM CDT Tuesday. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. For the first Heat Advisory, heat index values up to 111. For the second Heat Advisory, heat index values up to 112 expected. * WHERE. Portions of northwest Louisiana and east and northeast Texas. * WHEN. For the first Heat Advisory, until 8 PM CDT this evening. For the second Heat Advisory, from 8 PM Monday to 8 PM CDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 112. * WHERE. Hempstead, Howard, and Nevada Counties. * WHEN. Until 8 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Dangerously hot conditions with heat index values up to 113. * WHERE. Union, Columbia, Lafayette, and Sevier Counties. * WHEN. Until 8 PM CDT this evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Heat index values up to 109. * WHERE. Clark, Pike, Southern Johnson County, and Western and Northern Logan County Counties. * WHEN. Until 8 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.