CNN's live coverage of post-tropical cyclone Hilary has moved. Follow the link for the latest updates on the storm.
August 20, 2023 Storm Hilary batters California after making landfall in Mexico
By Maureen Chowdhury, Aditi Sangal, Mary Gilbert, Eric Zerkel, Steve Almasy, Matt Meyer and Helen Regan, CNN
Updated 7:31 AM ET, Mon August 21, 2023
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Hilary downgraded to post-tropical cyclone but 25 million still under flood warnings
From CNN's Monica Garrett
Hilary is now a post-tropical cyclone and continues to move through the southwestern United States, bringing life-threatening flooding and gusty winds, according to the National Hurricane Center.
A post-tropical cyclone is a cyclone that no longer possesses sufficient tropical characteristics to be considered a tropical cyclone, but can continue to produce heavy rains and high winds.
Hilary has winds of 35 mph with stronger gusts and is located about 390 miles north of San Diego, in central Nevada, racing to the north at 29 mph.
Across the southwestern US, the ongoing and historic amount of rainfall is expected to cause life-threatening to locally catastrophic flash, urban, and arroyo flooding including landslides, mudslides, and debris flows today. Localized flooding impacts, some significant, are also expected across northern portions of the Intermountain West into Tuesday morning.
Strong winds are expected to persist across portions of the western US today, particularly in and near areas of higher terrain.
All coastal tropical storm warnings have been discontinued. Flood watches remain in place for over 25 million people from Southern California northward to northern Idaho.
It's early Monday in Los Angeles. Here's the latest on Tropical Storm Hilary
From CNN staff
Tropical Storm Hilary crossed the US-Mexico border into California Sunday evening local time, becoming the first tropical storm in the state since Nora in 1997.
The storm pushed into Southern California with fierce winds and heavy downpours as residents faced downed power lines and flooded streets.
Rescue workers have been called out in multiple locations, and while the storm has weakened significantly, it’s still battering California with extreme weather as it moves farther inland — adding to fears that floods and mudslides could turn deadly.
Here's what you need to know:
- Where the storm is now: As of 11 p.m. local time, the core of Tropical Storm Hilary was roughly 10 miles southeast of Los Angeles with winds of up to 45 miles per hour, according to CNN Weather analysis. Hilary is moving north-northwest at 28 mph and its tropical storm-force winds extend out 230 miles from the center of the storm. Most of Southern California, including Los Angeles and San Diego, remains under tropical storm warnings.
- Forecast: Hilary is forecast to continue to move north through California and dissipate over central Nevada on Monday, bringing “potentially historic” rainfall amounts along the way that could trigger more floods, landslides and debris flows, according to the National Weather Service.
- Rainfall and flash flood warning: Intense rainfall up to 10 inches is possible across Southern California and Nevada through Monday morning, and rainfall up to 5 inches is possible across parts of Oregon and Idaho through Tuesday morning. This rainfall could lead to catastrophic and life-threatening flooding. “Areas that normally do not experience flash flooding will flood,” the National Weather Service said. “Lives and property are in great danger through Monday.” Multiple daily and monthly rainfall records were broken Sunday.
- Evacuation orders: Fire department officials are pleading with the public to heed evacuation orders and stay off the road unless they are in danger. “If we ask you to evacuate, we don't take that lightly,” said Mike McClintock, Battalion Chief with the San Bernardino Fire Department. "Just 12 inches of water can whisk away your car from the roadway." The San Bernardino County Sheriff’s Department issued a shelter in place order for some residents because of mud and debris blocking a roadway.
- Schools closed: The Los Angeles Unified School District — the nation’s second largest school district — will be closed Monday because of Hilary. So will campuses in the Pasadena Unified School District and the San Diego Unified School District, officials said.
- Palm Springs: Three main roads were closed and a local emergency was declared after the city received half a year’s worth of rain in just a six-hour period on Sunday, according to the National Weather Service. There have been at least three swift water rescues so far in Palm Springs, police lieutenant Gustavo Araiza told CNN. The 911 emergency phone system also experienced an outage.
- In Mexico: Hilary battered the Baja California peninsula on its way north, killing at least one person and causing major flooding in some areas. Mexican authorities have lifted the tropical storm warning for the west coast of Baja California and the east coast of the peninsula south of San Felipe. The warning has also been discontinued south of Puerto Penasco along the coast of mainland Mexico.
Tropical Storm Hilary brings powerful winds and rain, flooding California streets
From CNN's Nouran Salahieh and Gene Norman
Tropical Storm Hilary is pushing into Southern California with fierce winds and heavy downpours as residents face downed powerlines, flooded streets and rescues needed.
Hilary is forecast to continue to move north through California and dissipate over central Nevada on Monday, bringing “potentially historic” rainfall amounts along the way that could trigger more floods, landslides and debris flows, according to the National Weather Service.
“Areas that normally do not experience flash flooding will flood,” the National Weather Service said. “Lives and property are in great danger through Monday.”
The storm could potentially be the first tropical system on record to strike Nevada.
It could also wreak havoc farther north. Rainfall up to 5 inches is possible across parts of Oregon and Idaho through Tuesday morning. This rainfall could lead to catastrophic and life-threatening flooding.
Once a hurricane, Hilary weakened as it made landfall in Mexico Sunday, where at least one person died, then it crossed over into the Golden State. The storm’s center was roughly 10 miles southeast of downtown Los Angeles around 8 p.m. local time Sunday, moving north with weakened 45 mph winds, according to the National Hurricane Center.
While the storm has weakened significantly, it’s still battering California with extreme weather as it moves farther inland, bringing continued fears that floods and mudslides could potentially turn deadly.
Read more here.
Storm causes 911 outage in Palm Springs
From CNN’s Andy Rose
The 911 emergency phone system in Palm Springs, California, experienced an outage Sunday night, as the region feels the effects of Tropical Storm Hilary.
The city announced that voice lines were down in a widespread 911 outage, but said emergency services were accessible by texting 911 or calling direct lines to police and fire departments.
The city earlier declared a local emergency due to "unprecedented rainfall and flooding" from the storm, with residents asked to stay home and avoid driving.
Flooding closes part of highway in Cathedral City
From CNN’s Andy Rose
A section of Interstate 10 in Cathedral City, California was closed Sunday night because of heavy rains.
The California Department of Transportation said the section had to be shut down “due to flooding and debris on the highway.”
Cathedral City is about 100 miles east of Los Angeles, near Joshua Tree National Park.
Shelter in place order issued for some residents in San Bernardino County
From CNN’s Joe Sutton and Mike Valerio
The San Bernardino County Sheriff’s Department has issued a shelter in place order for some residents in the county because of mud and debris blocking a roadway.
“Due to current rain, there is mud and debris blocking the roadway. A SHELTER IN PLACE ORDER is now in effect for the community of Forest Falls, and residents on Oak Glen Road, from Casa Blanca Street to Harris Road,” the sheriff’s department said on social media.
Evacuation orders: The department also noted an evacuation order was in effect for some residents.
“An evacuation order is now in affect for the residents of the Serrano Square neighborhood, south of Oak Glen Road and east of 2nd Street, in Yucaipa, CA," it said.
Earlier Sunday, a senior San Bernadino Fire Department officer urged residents to heed evacuation orders and stay off the road unless they are in danger.
“If we ask you to evacuate, we don't take that lightly,” said Mike McClintock, Battalion Chief with the San Bernardino Fire Department, in an interview with CNN. “We're asking you based on predictions and concerns, and we want you to get out sooner rather than later.”
McClintock said evacuation orders are meant to help residents escape areas that may face serious flooding, and that warnings should be heeded immediately.
“The last thing we want you to do if we have significant rain is you try to leave last minute and then be overtaken by floodwaters,” he said.
Portion of highway in Barstow closed after power pole struck by lightning
From CNN’s Joe Sutton
A portion of Interstate 15 is closed in Barstow, California due to downed power lines, according to the California Department of Transportation (Caltrans.)
“A power pole in Barstow was struck by lightning at about 11 a.m. Sunday and I-15 was closed,” San Bernardino County PIO David Wert told CNN.
Caltrans District 8 (San Bernardino/Riverside) spokesperson Eric Dionne said the interstate remains closed.
Ventura County firefighters rescue 2 people from river
From CNN’s Amanda Jackson and Joe Sutton
Authorities in Ventura County conducted a search and rescue operation in the Santa Clara River Sunday evening after people became trapped.
Two people were rescued by walking out of the flooded areas, the Ventura County Fire Department PIO said in a social media post.
Videos show firefighters searching the river.
“FFs have searched the Santa Clara River and determined there to not be any more people in the river at this location. All crews are clearing the scene,” the fire department said in an update. “These locations are dangerous, please stay out river bottoms and canals.”
Most of Southern California remains under tropical storm warnings as Tropical Storm Hilary moves toward Los Angeles, where more than 9 million people are under flash flood warnings.
This post has been updated with additional information.