Rain from Tropical Storm Hilary lashes California, Mexico; Gov. Newsom declares state of emergency

SAN DIEGO: Tropical Storm Hilary inundated streets across Mexico’s arid Baja California Peninsula with deadly floodwaters Sunday before moving over Southern California, where it swamped roads and downed trees, as concerns mounted that flash floods could strike in places as far north as Idaho.

Forecasters said Hilary was the first tropical storm to hit Southern California in 84 years, bringing floods, mudslides, high winds, power outages and the potential for isolated tornadoes. The storm already dumped more than 6 inches (15.24 centimetres) of rain in some mountain communities and threatened more than an average year’s worth of rain in inland desert areas.

Hilary made landfall along the Mexican coast in a sparsely populated area about 150 miles (250 kilometres) south of Ensenada Sunday, then moved through mudslide-prone Tijuana, threatening the improvised homes that cling to hillsides just south of the U.S. border. By Sunday evening, the storm had moved over San Diego and was headed north into inland desert areas.

As evening fell in California, the National Weather Service in Los Angeles warned of significant flooding risk throughout populous mountain areas along the coast northeast of Los Angeles.

“PLEASE … STAY OFF THE ROADS,” the agency posted on X, formerly known as Twitter.

Mud and boulders spilled onto highways, water gushed onto roadways and tree branches fell in neighborhoods from San Diego to Los Angeles. Dozens of cars were trapped in floodwaters in typically hot and dry Palm Desert and surrounding communities across the Coachella Valley. Crews pumped floodwaters out of the emergency room at Eisenhower Medical Center in Rancho Mirage.

Hilary could wallop other Western states with once-in-a-century rains, with a good chance of it becoming the wettest known tropical cyclone to douse Nevada, Oregon and Idaho. Hilary was expected to remain a tropical storm into central Nevada early Monday before dissipating.

The Los Angeles Unified School District, the nation’s second-largest school system, and said all campuses would be closed on Monday. San Diego schools postponed the first day of classes from Monday to Tuesday.

“There is no way we can compromise the safety of a single child or an employee, and our inability to survey buildings, our inability to determine access to schools makes it nearly impossible for us to open schools,” Superintendent Alberto Carvalho said at a media briefing.

“It’s really choppy out there, not really surfable yet, but I think we can find a good break somewhere later,” Johnson said. “I can’t remember a storm like this.”

The weather service said tornadoes were possible in eastern San Diego County.

Death Valley National Park could get more rainfall from the storm than the area sees in an average year, officials said.

Meanwhile, one of several budding storm systems in the Atlantic Ocean became Tropical Storm Emily on Sunday, according to the National Hurricane Center. It was far from land, moving west in the open ocean. Also, Tropical Storm Franklin formed in the eastern Caribbean. Tropical storm watches were issued for the southern coasts of Haiti and the Dominican Republic.

In Sept. 1939, a tropical storm that roared into California ripped apart train tracks, tore houses from their foundations and capsized many boats, killing nearly 100 people on land and at sea.