Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

* WHAT...Heat index values up to 109 expected. * WHERE...In Arkansas, Benton, Carroll, Madison, and Washington AR Counties. In Oklahoma, Cherokee, Sequoyah, Adair, Delaware, Ottawa, Choctaw, Haskell, Latimer, Le Flore, Pittsburg, and Pushmataha Counties. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.