A colossal storm is threatening to bring severe weather to much of California this week and could impact travel over the Grapevine. Here's what to know.

What to Know Rainfall rates will be light to moderate before heavier rain overnight with the possibility of rainfall rates that could cause slides and debris flows. Evacuation warnings are in effect for several Southern California burn scar areas,

A powerful storm system is forecast to sweep across the region this weekend. Possible impacts include tornadoes, damaging winds, hail and heavy rain.