The Grapevine I-5 mountain pass is open in both directions.
Update: Friday 9:00 a.m.
The southbound lanes over the Grapevine have been reopened. The CHP is escorting northbound lanes.
Thursday 4:00 p.m.
The California Highway Patrol closed the Grapevine section of Interstate 5 for the second time because of snow.
The mountain pass was closed around 4:00 p.m. and they gave no indication of when it may reopen.
The Grapevine was also closed Thursday morning for snow.
Click the related link and enter the number "5" to get updated conditions or call 1-800-427-ROAD (7623).