More than 11,000 Pacific Gas & Electric Co. customers in the East Bay lost power Tuesday night as a heat wave washed over the region.
The outage, which was not planned, started around 6:15 p.m. and affected 11,214 customers in Castro Valley, Dublin, Pleasanton and San Ramon, said PG&E spokesperson JD Guidi.
A total of 7,070 customers remained in the dark as of 9:45 p.m., Guidi said. There was no time estimate for when service would be fully restored.
The cause of the outage is under investigation.
The outage came as temperatures soared into the triple digits. Highs included 107 degrees in Concord, 106 degrees in Livermore, 99 degrees in Hayward, 98 degrees in Redwood City and 96 degrees in Fremont, according to the National Weather Service.
Oakland set a new record of 90 degrees, breaking the high of 89 previously set in 2001.
Records also fell in the North Bay. San Rafael and Kentfield both recorded a high of 103 degrees, toppling their previous records of 101 set in 1991. And Santa Rosa reached 105 degrees. That was two degrees warmer than the previous record set in 1970.
And in the South Bay, San Jose tied its previous record of 102 degrees set in 1970.
Check back for updates.