Active AlertsRio Oso, CA

Drink plenty of fluids, stay in an air-conditioned room, stay out ofthe sun, and check up on relatives and neighbors.Do not leave young children and pets in unattended vehicles. Carinteriors will reach lethal temperatures in a matter of minutes.Monitor the latest forecasts and warnings for updates.

* WHAT...Dangerously hot conditions with temperatures 95 to 108possible and widespread Major HeatRisk. Limited overnight reliefwith low temperatures in the 60s to mid 70s.* WHERE...Carquinez Strait and Delta, Sacramento Valley, Motherlode,Mountains Southwestern Shasta County to Western Colusa County,Northeast Foothills, Northern San Joaquin Valley, and portions ofShasta County.* WHEN...From Tuesday morning through Thursday evening.* IMPACTS...Heat related illnesses increase significantly duringextreme heat events, particularly for those working orparticipating in outdoor activities.* ADDITIONAL DETAILS...Hottest temperatures are expected Wednesday.Area waterways will continue to run cold and fast, creatingdangerous conditions for those seeking relief in rivers and lakes.