* WHAT...FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONSWITH HEAT INDEX VALUES UP TO 112. FOR THE HEAT ADVISORY, HEAT INDEX VALUES UP TO 109 EXPECTED.

* WHERE...FANNIN, DELTA, AND LAMAR COUNTIES.

* WHEN...FOR THE EXTREME HEAT WARNING, UNTIL 8 PM CDT THIS EVENING. FOR THE HEAT ADVISORY, FROM 8 PM THIS EVENING TO 8 PM CDT WEDNESDAY.

* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING EXTREME HEAT AND HIGH HUMIDITY EVENTS. HOT TEMPERATURES AND HIGH HUMIDITY WILL INCREASE THE RISK FOR HEAT-RELATED ILLNESSES TO OCCUR, PARTICULARLY FOR THOSE WORKING OR PARTICIPATING IN OUTDOOR ACTIVITIES.