Heat index values from 105 to 109 degrees are expected across most of eastern Oklahoma and northwest and west central Arkansas Wednesday afternoon. A heat advisory is in effect from noon to 8 pm Wednesday for all of the area.

Afternoon heat index values will climb between 100-110 degrees each day through much of this week (locally higher). Some relief in the heat will come late in the week and into the upcoming weekend behind a cold front on Thursday/Friday. Continue to follow heat safety precautions to reduce the risk of heat illness.