* WHAT...Hot conditions with temperatures 85 to 95 possible below
5500 ft elevation.

* WHERE...Riverside County Mountains, San Bernardino County
Mountains, and San Diego County Mountains.

* WHEN...From Thursday morning through Friday evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...High temperatures this week will be 20 to 30
degrees above normal for this time of year. Record breaking heat
is likely.

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Reduce outdoor recreation, especially each afternoon.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.