* WHAT...FOR THE HEAT ADVISORY, HIGH TEMPERATURES IN THE 90SEXPECTED. FOR THE EXTREME HEAT WARNING, DANGEROUSLY HOT CONDITIONS WITH HIGH TEMPERATURES IN THE MID 90S TO 104 EXPECTED.

* WHERE...ORANGE COUNTY INLAND AREAS.

* WHEN...FOR THE HEAT ADVISORY, UNTIL 10 AM PDT TUESDAY. FOR THE EXTREME HEAT WARNING, FROM 10 AM TUESDAY TO 8 PM PDT FRIDAY.

* IMPACTS...HEAT RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING EXTREME HEAT EVENTS. HOT TEMPERATURES MAY CAUSE HEAT ILLNESSES.