October 27 The Laguna Fire was first reported near Laguna Canyon Road via 911 calls at 11:50 a.m. on October 27. When firefighters reached the scene several minutes later, the incipient wildfire was burning of vegetation on unincorporated county land, but it quickly moved into thicker brush and intensified, with flames up to tall. By 12:28p.m., the fire had split into three separate fronts, threatening El Morro, Emerald Bay, and Laguna on their march to the Pacific Ocean. The fire's behavior had also intensified: flame lengths were routinely and occasionally reached into the air. As the fire reached Emerald Canyon, burning the upper drainage at a rate of per minute, firefighters recognized the impossibility of defending the homes within the canyon with their limited resources and withdrew. In the afternoon, firefighters began a
firing operation on the west side of Laguna Canyon Highway, seeking to deprive the fire of fuel and prevent it from crossing the road to the east. They were unsuccessful, and the fire jumped across the road, establishing itself there while demonstrating behavior so extreme that fire officials observing via helicopter recommended that Laguna Beach itself be evacuated. As law enforcement undertook that process, the fire reached the neighborhood of Canyon Acres, having traveled in only 17 minutes (a speed of more than ). Firefighters established new primary lines of defense within the city itself. The fire reached the
incident command post that had been established at Thurston Middle School, destroying a dozen classrooms as firefighters quickly lit more firing operations to protect the
Top of the World neighborhood. on October 27|alt=A woman looks at the camera with her mouth open, in front of a car parked on the side of the road. Behind her, thick smoke rises from a line of low hills. Late in the day, the state's
Office of Emergency Services announced that the Laguna Fire had become the top priority in the state. Throughout the day, bulldozers constructed firebreaks on the fire's north side between the community of
Turtle Rock and Laguna Canyon Road, and firefighters continued with firing operations. Meanwhile, the fire itself burned in Bommer and Shady canyons. By 6:00 p.m., the Orange County Fire Authority's report suggested that the whole fire was "roughly contained". The Laguna Fire was declared 100 percent contained at 6:00 p.m. that evening, == Cause ==