Power was restored in Glendale Wednesday evening after a substation failure knocked out service for 11,000 customers, officials said.
The large outage the ended shortly before 8 p.m. followed a series of others earlier in the day.
Glendale Water & Power said around 5 p.m. that thousands were being affected by power outages while the agency worked to restore electricity. A heat advisory was issued amid the outages and temperatures were still hovering around 96 degrees shortly before 5 p.m.
Officials were still investigating the exact cause of the substation failure that triggered the last outage affecting more than 10,000 people.
Wednesday's heat advisory covered Glendale and several other areas from Santa Clarita to Buena Park. It would remain in effect through 9 p.m., and residents were warned the humid conditions could cause heat illness.
Temperatures reached 99 degrees in the Glendale area Wednesday, and record highs for the date were set in Camarillo and Oxnard, according to the National Weather Service.
Residents were told to call 818-548-2011 if their power had still not been restored, and Glendale Water & Power provided the following list of cooling centers in the area:
- Glendale Adult Recreation Center at 201 E. Colorado St.
- Maple Park Community Center at 820 E. Maple St.
- Pacific Community Center at 501 S. Pacific Ave.
- Sparr Heights Community Center at 1613 Glencoe Way
Los Angeles city officials reminded residents to drink plenty of water.