December 18, 2017 4:40 pm PM Forecast: Weather System Brings Clouds and Onshore Flow An approaching weather system will brush by Wednesday, brining an increase in clouds and onshore flow. David Biggar has your First Alert forecast for Monday, Dec. 18, 2017. US & World Videos 0:26 6-year-old girl hit and killed by car in Pomona 2:00 South LA family loses home in fire after pursuit crash 4:23 The Original Pantry celebrates 100 years 3:03 Police investigating trespassing at big venues 0:21 Venice canals attack suspect charged with murder