* WHAT...High temperatures 85 to 95 degrees expected and overnight lows in the mid 70s.
* WHERE...Orange County Coastal Areas and San Diego County Coastal Areas.
* WHEN...From 10 AM Tuesday to 8 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Moderate to major HeatRisk. Elevated overnight lows will limit relief from the heat.