Record temperatures forecast as winter heatwave heads for California

Temperatures 15-20F above normal expected in southern California from Wednesday through Sunday

An unusual winter heatwave is expected across California this week with record temperatures in the forecast for multiple cities from the San Francisco Bay Area to Los Angeles.

In southern California, where temperatures are predicted to be 15 to 20 degrees above normal from Wednesday morning through Sunday, the National Weather Service upgraded a heat watch to a heat advisory.