SAN DIEGO — A series of power outages left thousands of people without power in San Diego County as the region baked in high heat on Sunday.
San Diego Gas & Electric said it dropped 150 megawatts of power throughout its service territory around 1 p.m., knocking out power to as many as 115,000 customers.
The California Independent System Operator, which is the state's main grid operator, ordered SDG&E shut a transmission line after a generator in the San Diego area went offline for an unknown reason, agency spokeswoman Anne Gonzales said.
The line had to be shut to keep other lines from getting overloaded, which could cause greater power interruption, Gonzales said.
The San Diego Union-Tribune reports (http://bit.ly/1NFUDiz ) the outages knocked out traffic signals, causing traffic jams in Mission Valley and other communities. Businesses left suddenly without power to operate equipment and cash registers turned customers away.
A ridge of high pressure was generating triple-digit temperatures across Southern California. Woodland Hills had a high of 104 degrees while Long Beach hit 99, according to the National Weather Service. Riverside's high of 106 tied the record set in 1943.
The heat was expected to be followed late Monday by a slow-moving storm that will bring rain to the region, forecasters said.