* WHAT...Temperatures of 85 to 105 expected. 10 to 20 degrees above normal.
* WHERE...A portion of southwest California.
* WHEN...From 10 AM Wednesday to 8 PM PDT Thursday.
* IMPACTS...Hot temperatures may cause heat illnesses.
* ADDITIONAL DETAILS...Humid conditions will add to heat discomfort. Heat peaking on Wednesday for most areas, except likely peaking Thursday for the Santa Barbara South Coast. Chance for Heat Advisories to be extended into Friday.