CNN
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Residents in the Southwest are bracing for heavy rains and potentially catastrophic flooding as Hurricane Hilary is expected to pummel the region as a rare tropical storm beginning Sunday and lasting into next week.
Hilary remains a Category 4 hurricane as it marches toward the coast of Mexico’s Baja California Peninsula with sustained winds of 130 mph, according to the National Hurricane Center. Its core is expected to pass close to the peninsula Saturday night and then weaken into a tropical storm as it crosses into the US and Southern California.
The threat has triggered California’s first ever tropical storm warning extending from the state’s southern border to just north of Los Angeles.
The Southwest is forecast to see heavy rainfall through early next week – with the most intense conditions on Sunday and Monday – as Hilary advances. The deluges could bring more than a year’s worth of rain to parts of California, Nevada and Arizona.
Parts of Southern California and Nevada could see 3 to 6 inches of rain and as many as 10 inches in some places, the center said. Elsewhere, amounts of 1 to 3 inches are forecast.
While Hilary’s core will pack a powerful punch, the NHC warned that strong winds and rain will begin far in advance of its arrival.
“Preparations for the impacts of flooding from rainfall should be completed as soon as possible, as heavy rain will increase ahead of the center on Saturday,” the hurricane center said.
In anticipation of the storm, officials across the region have begun to prepare for perilous road conditions, downed power infrastructure and dangerous flood conditions.
Nevada Gov. Joe Lombardo announced Friday that 100 state National Guard troops will be deployed to southern Nevada, which may see significant flooding.
President Joe Biden said in a Friday news conference that the Federal Emergency Management Agency has preemptively positioned personnel and supplies to respond in Southern California or other parts of the region, if needed.
If Hilary makes landfall in California as a tropical storm, it would be the first such storm to do so in the state in nearly 84 years, according to data from the National Oceanic and Atmospheric Administration.
Parts of Southern California face a high risk for excessive rainfall – also the first Level 4 of 4 threat to be issued for the area. This level of risk is exceptionally rare. From 2010 to 2020, high risks were issued on fewer than 4% of days per year on average, but were responsible for 83% of all flood-related damage and 39% of all flood-related deaths, research from the Weather Prediction Center shows.
Due to the significant threat, the state has prepared water rescue teams, California National Guard personnel and flood fighting equipment ahead of Hilary’s arrival, California Gov. Gavin Newsom’s office said Friday.
Highway maintenance crews will also be staffed around-the-clock in order to aid in roadway safety, the governor’s office said.
Electricity utility Southern California Edison – which serves more than 15 million people in the region – said Thursday that Hilary is on track to impact much of its service area. The company said it is preparing to respond to outages but urged residents to gather supplies including flashlights, external battery chargers and ice chests.
As the homeless community is particularly at risk for flooding dangers, officials in both Los Angeles and San Diego say they are performing outreach and offering temporary shelter. The LA County Sheriff’s Department said it is also mapping out at-risk encampments and making aerial announcements about the storm.
“We hope that the storm does not cause any damage, and more importantly there is no loss of life,” Los Angeles County Sheriff Robert Luna said in a Friday news conference. “But we will prepare for a worst-case scenario, not only to assist people here in our county, but if we are not impacted or affected, we will become a resource to other neighboring counties as needed.”
San Diego has also spent the last several days cleaning storm drains, clearing streets and readying equipment, Mayor Todd Gloria said Friday.
The storm threat also prompted Major League Baseball to overhaul its weekend schedule in the region, moving Sunday games hosted by the Los Angeles Angels, Los Angeles Dodgers and San Diego Padres to instead be split doubleheaders on Saturday. Major League Soccer matches for clubs LA Galaxy and LAFC on Sunday have been rescheduled to later dates.
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