Active AlertsMariposa Madera Foothills

What: High temperatures up to 104 degrees expected with the warmest temperatures will be located in the southern San Joaquin Valley. Overnight lows between 70 and 75 degrees expected in the Sierra Foothills where the thermal belt is strongest.
Where: San Joaquin Valley and Sierra Nevada foothills.
When: Until 11 PM PDT Wednesday.
Impacts: Hot temperatures may cause heat illnesses.
Additional Details: Moderate to major risk of heat-related illnesses for much of the population, especially those without effective cooling or hydration.

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