August 12, 2017 6:20 pm PM Forecast: Typical Summer Heat Typical summer heat and a morning marine layer are expected this weekend. Anthony Yanez has your First Alert forecast for Saturday, Aug. 12, 2017. US & World Videos 1:54 Extreme heat triggers power outages 2:36 Evacuation orders in Highland as Line Fire grows to 7,000 acres 0:56 West LA VA campus ordered by judge to build more housing 2:07 Power outage keeps thousands in the dark in LA County 3:36 Boeing Starliner returns back to Earth