UPDATED: 1:33 PM 12/07/13
The Sigalert at 1-5 Northbound at Parker Road has been cancelled. All lanes are open.
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The California Highway Patrol reports that the Interstate 5 Freeway has been shut down through the Grapevine area from Parker Road (north Los Angeles County) through Grapevine Road (Kern County) due to snow.
Changeable Message Signs have been activated In Los Angeles and Kern County warning of the 5 freeway closure over the Grapevine
Cal Trans recommends if you head north to consider Highway 126 to US 101. SR-58 is also currently closed.
U.S Forest Service - Angeles National Forest reports: FOG AHEAD! SLOW DOWN! Follow fog lines. Check road closures. Did you remember the chains? http://www.fs.usda.gov/ 
For the latest information on lane/road closures, accidents, traffic hazards & chain controls, visit the Cal Trans website:
Northbound freeway on-ramps are closed at Hasley Canyon Road and Parker Road in Castaic in order to prevent wrong-way driving when northbound motorists encounter the closure.
The Ridge Route is also closed, and access gates have been closed.
Southbound Interstate 5 traffic is stopped north of Fort Tejon.
As of noon Saturday, there is no estimate for the reopening of the freeway.
Highway 33 in Lockwood Valley, west of Frazier Park, is also closed due to heavy snow.
The National Weather Service has issued a frost warning, which remains in effect through Sunday morning as a cold front moves through the area.
Gusty west to northwest winds will develop and continue through the evening. Coastal areas will see gusts to 40 mph, increasing to 50-55 mph in the Antelope Valley.
Then, more cold air will filter into the region and temperatures will drop to 27-32 degrees, causing frost to develop. Even colder temperatures are possible overnight Sunday into Monday.
Story Courtesy of SCVNews.com and The Los Angeles County Sheriff's Department.
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Updated: National Weather Services Reports Snow, CHP Closes North I-5
Article: Updated: National Weather Services Reports Snow, CHP Closes North I-5 
Source: Santa Clarita News
Author: Newsroom