* 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.

* 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.

At 1128 AM CDT, Doppler radar was tracking a strong thunderstorm 7 miles east of Lockesburg, or 8 miles northwest of Mineral Springs, moving southeast at 45 mph. HAZARD. Wind gusts up to 50 mph and pea size hail. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include. Texarkana, Hope, De Queen, Ashdown, Nashville, Mineral Springs, Dierks, Lockesburg, Emmet, Wilton, Blevins, Perrytown, Tollette, Fulton, Washington, Ogden, Ben Lomond, Corinth, Mandeville, and Center Point.

At 1128 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Crater Of Diamonds State Park to near Humnoke. Movement was southeast at 30 mph. HAZARD. Winds in excess of 40 mph. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include. Pine Bluff. Camden. Arkadelphia. Stuttgart. Sheridan. Fordyce. Star City. Rison. White Hall. Gurdon. Redfield. Altheimer. Bearden. Gould. Gillett. Caddo Valley. Humphrey. Leola. Grady. Kingsland.

* WHAT. Heat index values up to 109 degrees. * WHERE. Portions of south central and southwest Arkansas, north central and northwest Louisiana, and east and northeast Texas. * WHEN. Until 7 PM CDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. A complex of showers and thunderstorms will shift south through portions of East Texas, extreme Southern Arkansas, and North Louisiana this afternoon, which will result in cooler conditions for the mid and late afternoon hours. This may result in portions if not all of the Heat Advisory area being cancelled early.