California
California caught in crosshairs of weather extremes in a warming world
Southern Californians are surfacing from a historic weekend of weather extremes after what may have been the first tropical storm to hit California’s coast in 84 years.
Tropical Storm Hilary, a probable combination of natural El Niño patterns and human-induced warming, dumped 2.48 inches of rain on downtown Los Angeles on Sunday, shattering the previous August daily record of 0.03 inches set in 1906, the National Weather Service reported.
The tropical storm definitely hit Baja California, but there are questions over whether it actually made landfall in the United States as a tropical storm.
Either way, it was widely seen as a harbinger of the state’s severe weather challenges in the future amid a warming world.
“Right out of the gate, we have the potential for stronger storms, and we also have the potential for storms that strengthen very, very quickly,” James Kossin, an adjunct professor at the University of Wisconsin-Madison and consultant for the climate risk nonprofit First Street Foundation, told The Hill.
Hilary broke “virtually all rainfall daily records” and achieved “some impressive totals” across the region, the National Weather Service’s Los Angeles branch determined Monday.
Palmdale Airport received 3.93 inches of rain, breaking a record of 0.05 inches set in 1934.
Death Valley National Park reported 2.20 inches of rain Sunday, breaking last summer’s record of 1.70 inches, according to the weather service’s Las Vegas branch.
To complicate matters further, just hours after Hilary arrived Sunday, an unrelated magnitude 5.1 earthquake rattled areas southeast of the Ventura County city of Ojai, along the Sisar fault.
Wildfire relief
The storm did bring Southern California some tangible benefits by temporarily reducing the risk of wildfire in the region, according to Daniel Swain, a climate scientist at the University of California, Los Angeles.
“There’s likely to be a prolonged reprieve for weeks, at least in Southern California and in places that got soaked on the eastern side of Sierra as well,” he said at his virtual office hours Monday afternoon.
That said, the Northern California Deep Fire, which began last week, grew to more than 3,000 acres over the weekend and began ripping through the Shasta-Trinity National Forest in Northern California. By Tuesday, the fire had expanded to 3,823 acres and was only 5 percent contained, according to the U.S. Forest Service.
Hilary’s rainfall is not expected to offer significant relief from that fire.
Still, Swain stressed that aside from Northwestern California, fire season has been relatively “low-key” this year so far.
“California deserves a break after the last decade,” he said. “At some point, just by random luck, you’ve got to have another year that isn’t as crazy.”
But Swain also noted “the great irony” that California is experiencing such a respite when “almost everywhere else on Earth is experiencing almost continuously crazy, record-breaking, even record-shattering, heat extremes and flood events.”
California’s reprieve, he stressed, will presumably be “more of the exception rather than the norm moving forward,” after a decade of severe droughts, wildfires and extreme precipitation events.
Unique set of circumstances
Kossin, a former atmospheric scientist for the National Oceanic and Atmospheric Administration (NOAA), credited “a unique set of circumstances,” some natural and some mad-made, for Hilary’s development.
“What causes the warm water in this case is probably mostly the El Niño, and that is natural,” Kossin said. “But that’s not to say that there isn’t a human fingerprint on it. At this point, there’s a fingerprint on just about everything.”
Also at work was a giant “heat dome” — a high-pressure, circulating system that traps hot air — which was moving the airflow in a clockwise manner along the dome’s western edge, Kossin explained.
“Most of the time, these storms form and they just travel from east to west and move out to sea and maybe threaten Hawaii,” he said.
But with the so-called “steering flow” that accompanies the heat dome, winds from the south were steering the storm toward California, according to Kossin.
“Winds can change direction completely from one day to the next,” he said. “So that adds a certain amount of randomness to the whole thing.”
The weather service by early Monday had reclassified the storm as a post-tropical cyclone, which later moved on to soak Nevada before drenching Oregon and Idaho.
Although meteorologists are confident that Hilary first appeared on land in western Mexico, they are still trying to determine whether the storm also made a separate entrance from the ocean into California, rather than over the mountains east of San Diego.
“It’s clear that Hilary made an initial landfall in northern Baja California,” Swain said. “But what is less clear now — there may have actually been a second landfall.”
The storm appears to have traveled “more or less directly over San Diego” and parallel to the coastline, prior to “going inland directly over Los Angeles,” according to Swain.
“Did this storm end up being the first to have an actual California landfall at or above tropical storm strength since 1939?” the climate scientist asked.
The answer remains uncertain because “it was so close,” he explained, noting that “sports are not the only context where there’s postseason analysis.”
Acknowledging that the distinction doesn’t necessarily matter, Swain noted that this path could have caused Los Angeles and Ventura counties to see more rain than was initially anticipated.
Countering claims that minimize the storm’s effects as “minor street flooding,” Swain cited reports of “large debris flows that took out bridges, scoured canyons, knocked down long established trees and structures,” as well as residents who fled in the middle of the night.
He also noted that many of the interstates and highways across southeastern California were shut down entirely as the storm persisted.
But the damage could have been much greater had desert weather conditions earlier in the day Sunday been different — and had there been more sun over the Salton Sea rather than thick clouds, according to Swain.
While the area did receive almost the same amount of rain as predicted, stronger morning sunlight near the Salton Sea’s surface could have generated enough instability to maximize rain rates, he explained.
“There were certainly places that recorded rainfall rates of 1-2 inches per hour, but not 3-4 per hour,” the climate scientist said.
“It turns out that makes a huge difference,” he added, noting that flooding could have been twice as bad or worse.
The role of randomness
Emphasizing the role of randomness and the fact that daily variability played such an essential role in Hilary’s trajectory, Kossin, the Wisconsin-based atmospheric scientist, pointed out the difficulties in holding climate change responsible for this specific event.
Zooming out, however, it is possible to demonstrate a potential link between hurricane and tropical storm intensity and climate change — which Kossin and his colleagues revealed in a 2020 paper in the Proceedings of the National Academy of Sciences.
The researchers showed how maximum sustained winds in hurricanes are getting stronger, and that a warming planet may be responsible for this trend.
“You need a storm to be very strong so it can survive that trip across that cold California current,” Kossin said, noting that this usually bars storms from being named before reach the coast.
Not only did Hilary have that strength, but it also intensified very rapidly — a phenomenon that he described as “driven by ocean temperatures.”
The question remains, however, how much of that warming was the result of climate change and how much were due to of El Niño.
While many factors came together to influence Hilary’s development, the storm was probably “made more likely due to climate change,” according to Kossin.
“The likelihood of an event like Hilary is higher now than it used to be,” he added.
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California
A California child is infected with bird flu. Here’s why this case is different
In summary
Bird flu has been spreading among dairy workers in California’s Central Valley, jumping from cows to people. A new suspected case in the Bay Area came from an unknown source.
An Alameda County child with mild upper respiratory symptoms tested positive for bird flu, state public health officials announced today. The potential infection is the first known case in California that does not appear to have originated from contact with infected cattle.
State health officials are waiting for the Centers for Disease Control and Prevention to confirm the test result.
Public health investigators suspect the infection may have originated from wild birds, which are the main carriers of bird flu, according to a statement from the California Department of Public Health. The agency did not disclose information describing the child’s interactions with wildlife.
The child displayed mild respiratory symptoms and tested positive for multiple viruses, according to Austin Wingate, a spokesperson for the Alameda County health department.
Doctors did not initially suspect bird flu. Officials detected it through routine influenza subtyping, Wingate said. Family members tested negative for bird flu, but they had other viruses.
Officials are working to notify and test close contacts of the child, which include individuals at a daycare the child attended.
“We want to reinforce for parents, caregivers and families that based on the information and data we have, we don’t think the child was infectious – and no human-to-human spread of bird flu has been documented in any country for more than 15 years,” said state Public Health Officer Dr. Tomás Aragón said in a statement.
Aragón emphasized the risk to the general public remains low. People can become infected through close contact with infected animals, according to the CDC. Dairy and poultry workers and people who work with wildlife face the greatest risk of contracting the virus.
Some infectious disease experts are concerned about what this case could signal about the wider bird flu outbreak sweeping the country, which started in 2022.
“We’re seeing the numbers go up, the number of infected farms, the number of farm workers, we now have this child. All of these signs to me suggest that things are going in the wrong direction, not the right direction,” said Sam Scarpino, an epidemiologist with Northeastern University in Boston who is not involved in the California disease investigation.
Cases spreading in Central Valley dairies
The case comes as California grapples with the country’s largest bird flu outbreak among cattle and farmworkers. There are 26 confirmed human cases of bird flu primarily in the Central Valley where the virus has swept through 335 herds, according to state health and agriculture officials. Workers in the dairy industry have contracted the virus through close contact with infected cows.
The state health department has distributed more than 3 million pieces of personal protective equipment to farmworkers. It has also secured 5,000 doses of the seasonal flu vaccine for farmworkers from the CDC.
The federal government has a small stockpile of bird flu vaccines, but they have not been distributed. Instead, health officials encourage people to get vaccinated for influenza, COVID-19 and respiratory syncytial virus to help prevent co-infections like the child had.
“We want to make sure in general that we promote people getting up to date on vaccines and protecting themselves from seasonal illness, from seasonal flu,” said Dr. Erica Pan, the state’s top epidemiologist, in a previous interview with CalMatters.
Scarpino said California has done a good job of testing farmworkers compared to other states where sick cattle have infected humans, contributing to its relatively high number of confirmed cases, but surveillance efforts across the board need to be increased.
As seasonal flu rates increase, it will become harder for public health laboratories to detect rare viruses, such as H5N1, the bird flu, Scarpino said.
Bird flu present in California sewage
The bird flu virus has appeared in 17 wastewater systems in California, according to the Centers for Disease Control and Prevention. Positive detections appear primarily in Northern California including in Alameda, San Francisco, Sonoma, Contra Costa and Sacramento. Wastewater surveillance cannot determine the source of the virus, but infections among wild waterfowl can contribute to its presence.
Maurice Pitesky, a researcher at UC Davis who studies bird flu in waterfowl, said it’s rare for the virus to jump from birds to humans, but it has happened before. The virus is endemic among wild birds, Pitesky said, and has also been detected in other mammals in California, including bobcats, skunks and mountain lions.
“As the virus further evolves within a mammalian host — whether it’s dairy cows, or felines, or all the species that it has affected — it will continue to adapt,” Pitesky said. “As it adapts more and more it has more potential to cause even more problems.”
Supported by the California Health Care Foundation (CHCF), which works to ensure that people have access to the care they need, when they need it, at a price they can afford. Visit www.chcf.org to learn more.
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California
Map: 70 independent bookstores in Southern California
Bookstores, there are never enough.
But Southern California has a rich array of independent bookstores. Whether in Los Angeles, Orange, Riverside or San Bernardino counties, you can often find a shop — though it helps to have a map. And when you factor in Santa Barbara to the north and San Diego to the south, there are 70+ bookstores and counting — new and used, adult and children’s, general interest and spooky scary — to visit.
SEE ALSO: Love books? Sign up for the free newsletter about bestsellers, authors and more
And that’s not even counting the Barnes & Noble establishments around the Southland. (Literally, we didn’t count them. But they are there if you need one.)
So it seemed like a good idea to create a treasure map to share the bounty spread across the Southern California landscape, including book shops like Bel Canto Books, Black Cat Fables, Chevalier’s Books, Cellar Door Bookstore, Tia Chucha’s Centro Cultural & Bookstore, Octavia’s Bookshelf, Once Upon a Time, and more.
Plus, because we’re always hopping onto the freeway somewhere, we included stores like Chaucer’s Books in Santa Barbara, Bart’s Books in Ojai and Godmothers in Summerland to the north. And to the south, there’s Mysterious Galaxy and Warwick’s in San Diego.
Originally Published:
California
Southern California homeowner shot and killed bear that frequently wandered the mountain community
A Southern California homeowner shot and killed a neighborhood bear that he claimed was trying to break into his chicken coop last week.
The community on San Bernardino County Mountain is no stranger to bears, who typically pass through their neighborhood but largely avoid people.
Despite lingering concerns in the neighborhood, the California Department of Fish and Wildlife said that the unnamed homeowner was legally permitted to kill the bear, specifically because it was allegedly trying to breach his chicken coop on Wednesday.
Under California Fish and Game code 4181.1 “any bear that is encountered while in the act of inflicting injury to, molesting or killing livestock may be taken immediately by the owner of the livestock.”
Had the bear been wandering through his yard, the homeowner could have faced legal consequences for not following the state’s regulated process. A permit is required even to kill a bear that is destroying property, according to the Department of Fish and Wildlife.
The code concerning livestock damages is one of the only outliers that legally protected the homeowner.
Community members on the mountain said that the particular bear killed by the homeowner often trekked through the neighborhood, but was skittish of people.
“He would just walk up the street and if I opened the door to my cabin, he would run,” neighbor Mike Kutz told KTLA.
“He would not stop and look. He would instantly run.”
The homeowner said that he had previously reported the bear to the sheriff’s department after it charged at him.
“I’ve done everything I can to prevent this bear. I had an electric fence. The bear went right through it no matter what,” the homeowner told KTLA.
“I had a bunch of deterrents, the bear kept coming. I even bear sprayed him, and he still kept coming.”
Still, the decision to kill the bear reportedly drew some criticism from the community and sparked a fervor online as people mourned the animal.
“I think if fish and game said that it’s justified then it’s justified,” Arrowbear Lake resident Eric Real told KTLA.
“I do love animals, so it does hurt to see a bear get shot over the situation.”
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