Hurricane Cay becomes the closest hurricane to Southern California in 25 years, adding to California’s weather problems




CNN

More extreme weather is forecast for Southern California this week as a hurricane spins in the Pacific Ocean off the coast of Mexico.

As it moves north, it can bring the threat of heavy rains and flash floods.and – far from providing relief from california heat wave – Hurricane winds can actually increase temperatures in some locations.

Hurricane Cay is forecast to move north parallel to the Baja California peninsula until Friday. It then turns west from the coast just near the US border with Mexico, but not before making the closest pass to Southern California for the first hurricane since 1997’s Hurricane Nora.

Cay is expected to maintain hurricane intensity until it reaches about 250 miles (250 miles) from San Diego. This is his only four hurricanes since 1950, according to the National Weather Service.

But the storm doesn’t have to be strong “for this to be a big concern for Southern California,” said San Diego NWS meteorologist Brandt Maxwell.

Forecasters warn that the system could exacerbate, rather than alleviate, the region’s extreme heat problems.

Winds of 60 mph or more are possible as the system interacts with the mountains of Southern California. And these winds will blow from the east. In other words, it will have a warming impact on coastal cities. Air is compressed as it travels down the mountain, increasing its temperature.

it is similar to santa ana wind phenomenonusually occurs in autumn and winter.

“I wouldn’t call it a Santa Ana wind, but it would have the same characteristics as a Santa Ana wind because it goes through canyons and slopes,” Maxwell told CNN.

Warm, dry winds from the east increase the risk of fire in the area. Temperatures could reach 100 degrees on Friday in coastal areas of San Diego and Orange County.

“This happened in 1984 when temperatures in San Diego reached 100 degrees from Category 1 Hurricane Marie, southwest of San Diego County,” Maxwell said.

Nighttime lows can hover in the 80s from Thursday night through Friday morning, making sleep uncomfortable, especially for those without air conditioning.

Then, the tropical system’s cloud cover and rainfall will shift into the region, causing temperatures to drop significantly, but creating new hazards as the unrelenting heat “ends abruptly and abnormally” late Friday, according to Los Angeles. NWS said.

Even if the Southwest is swamped Several years of massive droughtCay rainfall can pose a significant flood threat.

“The likelihood of heavy rainfall Saturday is rapidly increasing in Southern California, Arizona, and eventually Central California and Nevada,” forecasters at the Center for Weather Forecasting wrote Wednesday.

East-facing slopes near the Santa Rosa and San Jacinto Mountains could see up to 4 inches of precipitation by Friday. The WPC announced a rare 3 out of 4 level of excessive rainfall expected across the region on Friday.

Rainfall is desperately needed in dry Southern California, but this much rain in a short period of time can cause streams and rivers to swell rapidly.

“Too much rain at once is never a good thing. It’s a common feature of slow-moving tropical storms,” ​​said the WPC. “Therefore, the likelihood of flash floods is also increasing rapidly.”

Source: www.cnn.com

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