All tropical storm warnings have been canceled across Southern California as the remnants of Hilary, which no longer meet the threshold of a tropical cyclone, track north.
Once a Category 4 hurricane, Hilary tore through Southern California with historic rainfall on Sunday, flooding roads and knocking out power.
Here's how the news is developing. All times Eastern.
Aug 21, 2023, 11:20 AM EDT
LA residents should stay vigilant for mudslides, downed wires
No deaths or major injuries have been reported in Los Angeles from Tropical Storm Hilary, LA Mayor Karen Bass said at a news conference Monday.
Gushing flood water and debris rush down a roadway during Tropical Storm Hilary, in Angeles National Forest, Calif., Aug. 20, 2023, in an image from video.
California Dept. of Transportation via Reuters
While LA Fire Department Chief Kristin Crowley said no major damage has been confirmed, the mayor warned that "damage can occur in the hours and days after a storm hits, so Angelenos should continue to stay vigilant."
Mudslides and downed wires are also still a threat, Crowley cautioned, adding that residents should continue to avoid flooded roads.
She said rescuers on Sunday night responded to a flooded intersection where five cars were stranded. No one was hurt, she said.
The mayor added that no injuries were reported from Sunday's earthquake, which was unrelated to Hilary.
Aug 21, 2023, 10:48 AM EDT
Over 1 foot of rain hits San Bernardino County
Rainfall totals from Hilary have reached 13.5 inches in San Bernardino County, California, and 11.7 inches in the mountains of Riverside County, California.
Los Angeles County recorded over 7 inches of rain while Palm Springs saw more than 3 inches, which broke the desert city's all-time daily summer rain record.
Cars are seen submerged in floodwaters on the Golden State Freeway as tropical storm Hilary moves through the area on Aug. 20, 2023, in Sun Valley, Calif.
Justin Sullivan/Getty Images
Workers attempt to unclog a drain on a flooded street as Tropical Storm Hilary moves through the area on Aug. 20, 2023, in Rancho Mirage, Calif.
Mario Tama/Getty Images
Bristlecone, Nevada, northwest of Las Vegas, recorded 8.4 inches of rain, including 6 inches in just 24 hours, breaking the rainfall record for a tropical cyclone or remnant in the state.
Hilary also brought fierce winds. In California, gusts reached a whopping 87 mph in the San Gabriel Mountains and 84 mph at Big Black Mountain.
-ABC News' Max Golembo
Aug 21, 2023, 7:58 AM EDT
Flash flood warnings continue amid record rain
Flash flood warnings remained in effect on Monday in Los Angeles, Death Valley and some areas of southwest Nevada, after heavy rain fell overnight throughout the region.
Hilary weakened overnight into a post-tropical cyclone and was expected to dissipate in the high mountains of the Sierra Nevada.
A graphic from ABC News show flash flood warnings in effect in parts of Southern California and Nevada on Monday, Aug. 21, 2023.
ABC News
Copious amounts of rain fell overnight, including the 10.5 inches that soaked Raywood Flat, California, a rocky area within the San Bernardino National Forest.
Vehicles cross over a flood control basin that has almost reached the street, Sunday, Aug. 20, 2023, in Palm Desert, Calif. Forecasters said Tropical Storm Hilary was the first tropical storm to hit Southern California in 84 years, bringing the potential for flash floods, mudslides, isolated tornadoes, high winds and power outages. (AP Photo/Mark J. Terrill)
Mark J. Terrill/AP
About 6.15 inches fell in Los Angeles. Palmdale, a city north of the Los Angeles, had its highest all-time daily rainfall with 3.57 inches.
Palm Springs got 2.82 inches, marking the city’s highest daily rainfall for summer and for August.
A motorist walks out to remove belongings from his vehicle after becoming stuck in a flooded street, Sunday, Aug. 20, 2023, in Palm Desert, Calif.
Mark J. Terrill/AP
San Diego had 1.81 inches, its highest-ever daily August rainfall.
And Bristlecone, Nevada, near Las Vegas, picked up more than 6 inches, mostly within 24 hours. That rainfall broke the record for a tropical cyclone or remnant traveling through Nevada. It approached the 24-hour rain record for the state of 7.78 inches, which was set in 2004.
-ABC News’ Max Golembo
Aug 21, 2023, 3:27 AM EDT
Thousands without power as storm downs trees
Thousands of customers in Southern California were without power at about midnight, with the highest number of outages in San Bernardino County.
A woman walks through standing water as Tropical Storm Hilary approaches Palm Springs, California, U.S., August 20, 2023.
Bryan Woolston/Reuters
About 14,000 customers were without power in that inland county, along with 7,600 in Riverside County to the south, according to PowerOutage.us, a site that tracks electric providers.
About 7,900 customers in Los Angeles County had experienced power outages as of about 6 p.m. on Sunday, the Los Angeles Department of Water and Power said.
A power line pole is replaced on the East Side of Long Beach, California, August 20, 2023 as Tropical Storm Hilary arrives.
Zaydee Sanchez/Reuters
"The City of Los Angeles is responding to reports of flooding, downed trees, and wires as well as other calls for service," the city's emergency officials said in an update. "Zero deaths have been reported in connection with the storm or earthquake thus far. At least 150 tree-related issues and eight mudflows have been reported."
By midnight, about 3,700 customers in Los Angeles were still without power, according to PowerOutages.us.
