...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT SUNDAY... ...Heat index values from 105 to 110 expected. ...Portions of northwest Louisiana, southeast Oklahoma, south central and southwest Arkansas, southeast Oklahoma, and northeast Texas. ...Through 7 PM CDT Sunday. * IMPACTS...Hot afternoon high temperatures and high humidity may cause heat illnesses to occur. ...An upper-level ridge will maintain mostly dry conditions with temperatures forecast to climb into the mid to upper 90s on Sunday. The combination of hot temperatures and high humidity will allow for heat index values to climb above 105 degrees.
