August 12, 2016 4:40 am AM Forecast: Prolonged Heatwave Marine layer will clear for a weekend heat-up. Crystal Egger has the forecast for Friday, Aug. 12, 2016. US & World Videos 0:43 LA County releases sterile mosquitoes as warmer weather nears 3:43 Despite encampment's clearing, safety concerns linger at UCLA 3:09 USC updates graduation plans as protest continues 0:45 Lakers fire head coach Darvin Ham 0:32 1 killed in downtown LA warehouse shooting