Couple vanishes without a trace during trip to Big Sur

Olivia Hannah Gonzalez, 20, and Brian Fernandez, 21, are seen in this undated photo provided by the LAPD.

Authorities are hunting for a Los Angeles couple last seen more than a week ago as they left for a camping trip to California's Big Sur.

Olivia Hannah Gonzalez, 20, and her boyfriend, Brian Fernandez, 21, told family members they were leaving Dec. 23 for a weekend camping trip along the California coast and would return home on Christmas Day, according to the Los Angeles Police Department.

No one has seen or heard from them since, and family members are concerned for their well-being, police said.

The two reportedly were seen with camping gear and Fernandez's two dogs, Scooby and Luno, before they left their North Hollywood home. It's not known whether the two ever made it to the Big Sur -- roughly 70 miles of coast and cliff line -- or traveled elsewhere. Poor weather has hindered aerial searches for the couple, according to local news reports.

Gonzalez is 5-foot-6, weighs 120 pounds, and has blonde hair and brown eyes. Fernandez is described as 5-foot-8 and 160 pounds. He has black hair and brown eyes.

Authorities said Fernandez was driving a 2002 four-door tan Honda Civic with California license plate number 5VUD295.

A spokeswoman for the LAPD told FoxNews.com Tuesday that neither the couple nor their car has been located.

Gonzalez’s sister, Vanessa Guzman, told the Los Angeles Daily News that her husband got a text from Gonzalez at about 11:40 a.m. Dec. 23, saying the couple were about two hours away from the Big Sur on the state’s Central Coast. That was reportedly the last message the family received from Gonzalez.

"I’m terrified that my sister’s not going to come back home," Guzman told the paper.

Anyone with information regarding the couple’s whereabouts is asked to contact detectives at 213-996-1800. Anonymous tips can be made by calling the LA Regional Crime Stoppers at 1-800-222-TIPS (800-222-8477) or go directly to www.lacrimestoppers.org.

FoxNews.com's Cristina Corbin contributed to this report.