heat wave

Angel M Russell

A fall heat wave is hitting California, with heat advisories in effect for San Luis Obispo and Santa Barbara counties.

National Weather Service

A gradual cooling trend is expected to kick in on Tuesday, following another day of record-breaking heat along the Central Coast Monday afternoon. 

Flickr member oliver.dodd

The organization that controls California's power grid is asking state residents and businesses to conserve electricity Tuesday and Wednesday as a major heat wave pushes temperatures will into the triple digits.

Temperatures as high as 115 degrees were expected in the northern Sacramento Valley through Wednesday evening, putting a major drain on the power supply.