Heat Advisory

* WHAT...For the Heat Advisory, high temperatures in the 90s expected. For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the mid 90s to 105 expected.

* WHERE...Santa Ana Mountains and Foothills.

* 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.