Mexico's federal electricity utility says the border city of Tijuana and the nearby cities of Ensenada, Tecate and Rosarito have been hit by a blackout.
The Federal Electricity Commission says Monday's outage was caused by the failure of two generator units at a privately operated power plant in Mexicali, the capital of Baja California state.
The commission says the outage affected about 22% of customers in Baja California, but doesn't say how many households that represents.
But it says it's working to re-establish service.
San Diego's fire department has sent a five-member task force to Florida to help coordinate search and rescue missions amid Hurricane Dorian. Also, at least eight people were killed in a deadly boat fire off the California coast, some Uber and Lyft drivers are speaking out against a bill aimed to curb independent contractors, and San Diego water rates are going up.