Thursday, September 29

A hurricane that simply made landfall in Mexico is triggering flood considerations in components of southern California

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CNN
 — 

Hurricane Kay made landfall in Mexico, alongside the west coast of the central Baja California Peninsula on Thursday afternoon, triggering flooding considerations not simply in that area, however in components of California and Arizona too.

Hurricane situations had been impacting the peninsula Thursday and had been anticipated to final a number of hours because the storm moved alongside the coast, in keeping with the National Hurricane Center. Kay had most sustained winds of 75 mph on the time of landfall, making it a Category 1 storm. It’s anticipated to weaken all through Thursday night, the middle stated, however added that tropical storm situations will unfold northward.

Heavy rains will drench southern California Friday – doubtlessly bringing a number of months to a 12 months’s price of rain to a usually arid panorama. But that’s not all: As the storm strikes north, sturdy winds – removed from offering speedy aid from California’s climate crisis-driven heat wave – really may push already report temperatures larger in some locations.

Flooding can be doable beginning Friday in components of southwest Arizona, the hurricane heart stated.

Kay is anticipated to stay at hurricane power till it’s round 250 miles from San Diego – one thing solely 4 different storms have accomplished since 1950, in keeping with the National Weather Service – earlier than weakening because it strikes towards the US West Coast.

But the storm doesn’t should be sturdy “for this to be a significant concern for Southern California,” stated Brandt Maxwell, a National Weather Service meteorologist in San Diego.

Kay is forecast to trace parallel to the Baja California peninsula via Friday, pushing what might be record-breaking quantity of moisture into Southern California and Arizona. Then simply shy of the US-Mexican border, it can flip westward – away from the coast – because it makes the closest go to Southern California for a hurricane since 1997’s Hurricane Nora.

A flip to the west is anticipated by Saturday evening, the hurricane heart stated.

Winds may gust to greater than 60 mph because the system interacts with Southern California’s mountainous terrain. And these winds might be coming from the east, which implies they are going to have a warming impact on coastal cities; as air travels down mountains, it’s compressed and its temperature rises.

It might be just like the Santa Ana wind phenomenon, which usually happens within the fall and winter. “We should not calling it Santa Ana winds, however they are going to have traits of them as they go via canyons and the sloped terrain,” Maxwell informed CNN.

The heat, dry winds from the east will improve the area’s already considerable fire risk. Temperatures may attain 100 levels Friday in coastal components of San Diego and Orange counties.

“This occurred in 1984 as a Category 1 Hurricane Marie nicely southwest of San Diego County pressured temperatures to achieve 100 in San Diego,” Maxwell stated.

Lows may stay within the 80s in a single day Thursday and into Friday morning, making sleeping uncomfortable, particularly for these with out air con.

Then, the relentless warmth will “finish abruptly and unusually” late Friday, climate service in Los Angeles stated, because the tropical system’s cloud cowl and rainfall transfer in, drastically decreasing temperatures however creating new hazards: heavy rainfall and a flash flood risk.

Even because the Southwest has been mired in a multi-year megadrought, Kay’s rainfall may pose a big flood hazard.

“A Moderate threat for Excessive Rainfall is in impact for parts of Southern California this weekend,” the Weather Prediction Center said Thursday night. “While Hurricane Kay isn’t forecast to make landfall in California, related rainfall will possible nonetheless influence the area, with localized areas of heavy rainfall doable.”

Models counsel moisture over this usually dry space might be nicely above the 99th percentile for this time of 12 months going into the weekend.

Even although rainfall is desperately wanted throughout parched Southern California, this a lot rain over a brief interval could cause creeks and rivers to rise quickly.

“It’s by no means an excellent factor to get an excessive amount of rain suddenly, a trait all too widespread amongst slow-moving tropical storms,” the prediction heart stated earlier. “Thus, the flash flood potential is summarily additionally quickly growing.”

Rainfall of two to 4 inches, presumably as much as round 8 inches, is anticipated all through the mountainous terrain of Southern California, particularly on the jap slopes.

A warning of reasonable threat of extreme rainfall – Level 3 of 4 – is in impact for Friday over parts of Southern California and much southwest Arizona, with a slight threat – Level 2 of 4 – in impact by Saturday throughout extra of Southern California, western Arizona and much southern Nevada.

The National Weather Service forecasts 2 to 4 inches of rain over 36 hours Friday and Saturday at Imperial County Airport in southeastern California; the spot will get 2.38 inches of rain on common every year. If Imperial receives greater than 3 inches of rain, it could make this month its wettest September, breaking a report set in 1976.

The Imperial Valley area is house to one of many nation’s most efficient farm belts, particularly recognized for producing winter greens for US customers because of its year-round rising season. The space and close by areas together with Yuma, Arizona, have been coping with long-term drought and are in contentious negotiations about reducing their hefty water supply from the Colorado River.

In Palm Springs, California, 2 to 4 inches is forecast via the weekend, pushing towards the standard annual rainfall tally of 4.61 inches. Three inches in Palm Springs would put this month within the high three wettest Septembers for town and make it the wettest since 1976, when it bought 4.17 inches; its common September rainfall is 0.24 inches.

Yuma may see 1.5 inches of rain via the weekend, which might make this month the wettest September there since 2009. The metropolis’s common September rainfall is 0.68 inches.



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2022-09-08 22:43:46

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