* WHAT. Heat index values up to 107 expected. * WHERE. Portions of central, southeast, southwest, and western Arkansas. * WHEN. From noon today to 8 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

At 954 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Oliver to near Daisy. Movement was south at 40 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. Wickes, Athens, Plunketville, Rufe, Smithville, Hochatown, Watson, Battiest, Pickens, Mount Herman, Sherwood, Slim, Bethel, and Ringold.

* WHAT. Heat index values up to 105 expected. * WHERE. Bradley, Cleveland, Desha, Drew, Lincoln, Calhoun, Clark, Dallas, Ouachita, and Pike Counties. * WHEN. Until 8 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 109 expected. * WHERE. Portions of south central and southwest Arkansas, north central and northwest Louisiana, southeast Oklahoma, and east and northeast Texas. * WHEN. From 10 AM this morning to 7 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.