A severe heat wave has set new record highs for several cities in Southern California. The National Weather Service says the thermometer hit 112 degrees in Lancaster, breaking the old record of 110 degrees set for the same day in 1961.

The service says a record high temperature was set at the Bob Hope Airport in Burbank with 111 degrees. That breaks the old record of 106 degrees set for this date in 2008. Forecasters expect Monday to be the peak of the heat wave. Officials say about 20,000 customers were without electricity when outages were at their worst Monday.