* WHAT...Heat index values up to 110 expected.
* WHERE...In Arkansas, Southern Crawford, Central and Southern Franklin, and North and Central Sebastian Counties. In Oklahoma, Central and Southern Sequoyah and Northern Le Flore Counties.
* WHEN...From noon to 8 PM CDT Saturday.
* IMPACTS...Heat related illnesses are possible especially impacting those not acclimated to the conditions or those performing strenuous activities.