I'm finding information kind of confusing regarding Grapevine I-5 tonight

If it's snowing there and you don't have chains be careful over mountain passes on grapevine if it's open. There is also a wind advisory up for tall vehicles that might be blown over as well. Whether it is open or not it likely is very very dangerous over the grapevine tonight. Check with Caltrans or CHP to find out more.