* WHAT...Dangerously hot conditions with high temperatures ranging from the mid 80s to around 90 near the coast to the mid 90s to around 100 near higher coastal terrain expected. Nights will be very warm with low temperatures mostly in the 70s.
* WHERE...Orange County Coastal Areas.
* WHEN...From 10 AM this morning to 8 PM PDT Thursday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat events.