Extreme Heat Watch

* WHAT...Dangerously hot conditions with high temperatures 113 to 117 possible. Low temperatures in the mid to upper 80s.

* WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning.

* WHEN...From Wednesday morning through Monday evening.

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

* ADDITIONAL DETAILS...Major HeatRisk. Elevated low temperatures will limit overnight relief from the heat.