Heavy rains triggered dangerous flooding Tuesday morning in Southern California, with rivers of mud and debris destroying at least three homes and pooling water forcing police to close parts of the coastal US Route 101, officials said.
Near the coastal community of Montecito, at least three homes were “wiped away by mudflow and debris,” and emergency workers scrambled to rescue people from vehicles and buildings, Santa Barbara County fire spokesman Mike Eliason said.
Heavy rain was falling in areas charred by recent wildfires, triggering fears of flash flooding and mudslides because vegetation that otherwise would hold hills together and make the terrain flood-resistant have burned away.
Thousands of people in Southern California were under evacuation orders because of flooding and mudslide fears, including in Santa Barbara, Ventura and Los Angeles counties.
Flooding near La Conchita has prompted the closure of parts of US Route 101 in Ventura County, the sheriff’s office there said Tuesday morning.
‘Mud came in an instant, like a dam breaking’
In Montecito, a community of about 8,000 people east of Santa Barbara, Ben Hyatt told CNN on Tuesday morning that a river of mud had crashed through a neighbor’s house.
“Apparently one of their cars ended (up) in their back yard. We have neighbors at (the) top of street that evacuated to their roof,” Hyatt said.
His own house was “surrounded by mud,” and a washing machine had drifted into his front yard, he said.
Hyatt said he was awake when power went out during heavy rain around 2:30 a.m. local time. Eventually he heard a loud swish and banging on the exterior of his house.
“Mud came in an instant, like a dam breaking. (It) surrounded the house, 2 to 3 feet,” he said.
“Seems calm now. We feel safe. But definitely stuck here for a bit.”
More than 1 inch of rain per hour
By early Tuesday, more than 4 inches of rain had fallen in parts of Ventura County over two days, and at times it came down with overwhelming speed.
The rate was more than 1.5 inches per hour in parts of Southern California on Tuesday morning, the National Weather Service said, and a flash-flood warning was in effect for portions of Ventura and Santa Barbara counties until 9:30 a.m. local time.
Only about a half-inch per hour is enough to start mudslides, said Robbie Monroe of the National Weather Service in Oxnard.
The downpour is overpowering a terrain especially vulnerable in the wake of recent fires. The Thomas Fire — the largest wildfire in California’s recorded history — has burned more than 281,000 acres in Santa Barbara and Ventura counties since it began in early December. It was 92% contained Tuesday, and officials don’t expect full containment until later this month.
The cruel irony is that the region has suffered from years of drought, and officials say they need the rain to regrow plants and trees that help keep the hillsides together and flood-proof.
Mudslides are not uncommon to the area and can be deadly. In January 2005, a landslide struck La Conchita in Ventura County, killing 10 people and destroying or damaging 36 houses.
Thousands ordered or encouraged to evacuate
Knowing this week’s rains likely were trouble, officials ordered evacuations for thousands of people ahead of time.
In Santa Barbara County, more than 6,000 people were under mandatory evacuation orders, including residents in parts of Carpinteria, Montecito and Goleta, located below areas scorched by the wildfires over the past year and a half, including the Thomas Fire, county spokeswoman Gina DePinto said.
Voluntary evacuation warnings were in effect for another 20,000 people, including others in those same communities, she said.
Los Angeles County officials issued mandatory evacuation orders for about 300 homes in the Kagel Canyon, Lopez Canyon and Little Tijunga Canyon, areas affected by the Creek Fire. Police and fire officials in Los Angeles helped with evacuations in areas damaged by the Creek and Fish fires, officials said.
Ventura County also issued both mandatory and voluntary evacuations for several communities.