UPDATE: 4:45 - Fire officials have knocked down the fire and the highway is reopened.
Fire officials say two spot fires were reported, one on one side of Highway 1 and one on the other side of Highway 1. Both fires were very small in size.
A total of three fire departments responded to the fire, including Lompoc Fire, Vandenberg fire, and Santa Barbara County Fire.
CAL FIRE is responding to reports of a fire near Vandenberg Village.
The fire broke out at about 3:05 p.m. Thursday near Santa Lucia Canyon Road along Highway 1.
According to California Highway Patrol, first responders are in the area working to close off the southbound lane of Highway 1.
The cause of the fire is unknown at this time.
This is a developing story and will be updated when new information becomes available.