Heat Advisory

* WHAT...High temperatures in the mid 80s to mid 90s to around 100 for the inland San Diego County valleys with low temperatures in the mid 60s to lower 70s expected. Hottest conditions expected Thursday through Sunday.

* WHERE...Orange County Inland Areas, San Diego County Valleys, and Santa Ana Mountains and Foothills.

* WHEN...From 10 AM Wednesday to 8 PM PDT Monday.

* IMPACTS...Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Widespread moderate HeatRisk with localized major HeatRisk. Elevated low temperatures will limit overnight relief from the heat.