California
Atmospheric Rivers in California Create a Perfect Storm of Public Health Risks – Inside Climate News
After a torrential downpour, most post-storm damages are impossible to miss: submerged cars, houses torn in half by fallen trees, debris floating through the streets. But in California, extreme weather is also mixing up a soup of rain and disease.
Climate-fueled outbreaks: In Southern California, an atmospheric river unleashed more than a foot of rain in parts of the region at the start of February. These types of storms also ravaged the state last year, following a decades-long period of drought. The climate-fueled cycle of rain and drought is driving an uptick in a fungal disease known as coccidioidomycosis, or Valley fever, reported Grist last week. As it rains, the fungi proliferates in the soil, and when it dries out, spores are kicked up from the ground and into people’s noses or throats, potentially leading to pneumonia-like symptoms of cough and fever.
Scientists sounded the alarm bells for rising Valley fever cases due to changing environmental conditions in 2022, but the data has since become even more stark. There were more than 9,280 new cases of Valley fever with onset dates in 2023, which is the highest number ever recorded in this region by the California Department of Public Health. Around 200 people in the United States die from severe cases of this respiratory disease every year.
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Also mixed into the post-storm soup of ocean water, fungi spores, rain and debris in California? Millions of gallons of untreated sewage. This bacteria-ridden wastewater poses a severe public health threat, particularly for those closest to the California-Tijuana border, which I wrote about earlier in February. Two local San Diego doctors I spoke with told me a particularly unsettling statistic: After Tropical Storm Hilary slammed into Southern California in August 2023, their practice saw a 560 percent increase in diarrheal illness cases.
A report released last week by scientists at San Diego State University further underscored the severity of this public health threat, adding that wastewater can also carry toxic chemicals alongside bacteria. California government representatives are currently advocating for $310 million in federal funds to refurbish the state’s dilapidated sewage treatment plant at the border — an increasingly urgent request as the state currently faces another round of storms fueled by the atmospheric rivers.
Disease, water and war: Unfortunately, this kind of post-storm sewage overflow can be seen well beyond California. In November, wastewater flowed through the streets of Gaza amid the Israel-Hamas War as storms pummeled the region and sanitation services stopped operating. With a short supply of clean drinking water, civilian camps were ravaged by disease, and cases of diarrhea in children under five increased from 48,000 to 71,000 in just one week starting Dec. 17, according to UNICEF.
“Our whole family has diarrhea that seems to be caused by the water we drink, or the cold weather,” Mahmoud Aziz, a 36-year-old who fled to Rafah, told the Washington Post on Dec. 13. “We leave the windows open because of the bombing; we are afraid of the glass if there is a bombing.”
On Feb. 12, Israeli airstrikes killed more than 100 people in Rafah.
Halting the Run on Dwindling Groundwater
A judge in Montana recently ruled in favor of landowners and ranchers fighting against a housing development project near Helena that could have put further stress on steadily declining groundwater reserves.
Public defiance: Initially, the state and county governments had signed off on a developer’s plans to build 39 homes that would pull their water from wells, a project that was challenged by local residents in central Montana. But Broadwater County District Court Judge Michael McMahon found that the county commission and state’s Department of Natural Resources (DNRC) had conducted an “abjectly deficient” environmental assessment for the housing construction.
His 85-page order stated that the offices’ approval of the project displayed “hostility” toward a previous court ruling that requires the government to consider the potential harms to the environment and groundwater before allowing for development.
“It should give DNRC pause that citizens with seemingly no legal training appear to have a better grasp of the exempt well limits than DNRC, the agency charged with administering the Water Use Act,” McMahon wrote.
While the coalition fighting this project celebrated the ruling, developers worried about its long-term implications.
“Where are we going to house citizens of Montana?” Eugene Graf, president of the Montana Building Industry Association, told The New York Times, adding that he hopes state lawmakers revise the law.
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Shutting off the tap: If upheld, the “landmark” decision has the potential to curtail many new development projects in rural Montana, reported the Montana Free Press. The ruling isn’t the first of its kind: At the end of January, the Nevada Supreme Court unanimously ruled that the state can restrict new groundwater pumping if it will negatively affect other users and wildlife, while Arizona’s governor is pushing for broad reforms and the creation of groundwater-minded laws across the state, as my colleague Wyatt Myskow reported in December.
These actions come amid a widespread reckoning against rampant groundwater usage. Last August, a New York Times investigation revealed that much of the U.S. is facing drastic declines in their aquifers as climate-fueled droughts force residents to rely more on groundwater supplies for water than rain or snowpack. More recently, a study showed that this pattern can be seen globally, with aquifers shrinking around the world.
But not all hope is lost.
“We also find cases where declining groundwater trends have been reversed following clever interventions,” Scott Jasechko, a water resources expert at the University of California, Santa Barbara who co-led the study, told my colleague Liza Gross.
For example, Tucson, Arizona, reversed groundwater declines in some areas by constructing “leaky ponds,” which seeped much-needed water into aquifers, the study’s authors wrote in The Conversation.
More Top Climate News
Hawaii is Considering a ‘Climate Tax’ for Tourists: Gov. Josh Green is spearheading a push to charge island visitors with a $25 tax to help offset the environmental impact of tourism, Jeremy Yurow reports for USA Today. The proposed bill would allocate the money toward initiatives to restore coral reefs, build greener infrastructure and implement measures to prevent wildfires like the ones that tore through Lahaina on Maui in August.
A New Satellite Tool Will Help Users Map Methane Leaks: Google recently partnered with the nonprofit Environmental Defense Fund to launch an AI-based satellite tool that could offer the most detailed look yet of global methane emissions from oil and gas operations. This could help governments pinpoint and plug the “types of machinery that contribute most to methane leaks,” Yael Maguire, who leads geo-sustainability efforts at Google, told James O’Donnell for MIT Technology Review.
An update following Friday’s newsletter … which covered the intense debate between Maine’s lobster industry and conservationists after an endangered North Atlantic right whale washed ashore in Martha’s Vineyard with lobster gear entangling its tail: Another dead North Atlantic right whale was spotted last week off the coast of Savannah, Georgia, this time with injuries consistent with a vessel strike. Boat collisions are one of the other leading killers of this marine giant alongside gear entanglements, and I covered a deep-dive of this issue in October if you’d like to learn more.
California
The state benefiting most from California’s stunning exodus
Nevada — known for its vast deserts and audacious gamblers — is luring Californians away from the Golden State at a higher rate than any other.
The Silver State leeched a net 81 Californians per 10,000 residents each year from California between 2016 and 2025, as California undergoes a mass exodus of residents leaving, according to a report.
The report, titled “Priced Out: RELOCATION AMIDST CALIFORNIA’S AFFORDABILITY CRISIS,” was released on March 31 by the nonpartisan California Policy Lab.
Californians move to Nevada at a higher rate than even Texas, the report notes.
“Nevada is the standout,” the report says. “News reports often mention Texas, but that is misleading. The most accurate measure of popularity adjusts for state population and shows a clear pattern: proximity reigns. Californians most often leave for nearby states, and California also welcomes new residents from neighboring states most frequently.”
Nevada is a much cheaper state for U.S. residents to live in than California. It has no state income tax, unlike California, and housing prices, along with gas prices, are also lower. California’s average regular gas price was $5.88 on Friday while Nevada’s was $4.99, an 89-cent difference.
Evan White, a co-author of the study, says the Californians are leaving for more affordable states.
“The price tag has gone up on the California Dream, and many families are leaving the state for more affordable places,” White, the Executive Director of the California Policy Lab at UC Berkeley, said. “The difference these moves make is stark. Their destination neighborhoods are half as expensive and they end up much more likely to own a home within just a few years.”
The report shows that out-of-state movers pay an average of $672 less per month on housing costs, and home prices are 48% lower. Former California residents are about 48% more likely to own a home in their new state.
Higher-income Californians are also leaving at increasingly higher rates, the report said. The share of higher-income Californians leaving has increased from 34% to 40% since the pandemic.
“Our report shows that people who leave California are increasingly leaving from higher-income neighborhoods,” co-author Dr. Brett Fischer, Researcher at the California Policy Lab, said. “These movers are, on average, in a weaker financial position than their neighbors, and may be moving to attain the quality of life they see their neighbors enjoying but they cannot afford.”
From 2010 to 2024, nearly 10 million people left California. The state is considered one of the most expensive states in the nation.
Idaho, Oregon, and Arizona are the next largest net recipients of Californians on a per-capita basis, the report says.
California
Fuel shortages from the Iran war have spread to Europe, but the pain is hitting California and the West Coast as well—and help is years away | Fortune
Europe is facing more widespread fuel shortages heading into the summer as the war in the Middle East drags on, but shortfalls—especially for jet fuel—will soon spread to California and the broader West Coast as the global energy supply shock ripples across the world.
While the U.S. leads the world in crude oil production, California is not able to enjoy the bounty as much as the rest of the country. The Golden State—the fourth-largest economy in the world—essentially operates as an island sandwiched between the Pacific Ocean on one side and mountainous terrain on the other. That makes it difficult and expensive to build oil and fuel pipelines. A tougher regulatory environment and heightened fuel standards have also made the state’s refineries less economical over the years.
The bottom line is California must import a lot of its oil, gasoline, diesel, and jet fuel from Asia—a region that is itself currently struggling with shortages because of its reliance on Middle Eastern supplies.
And, in something of a perfect storm of unfortunate timing, the Iran war coincides with the recent shuttering of the Phillips 66 Los Angeles refinery and the April closure of Valero Energy’s Benicia refinery near San Francisco. The two complexes combined for nearly 20% of California’s oil-refining capacity. Valero also is weighing the future of its Wilmington refinery near Los Angeles.
“It’s real terrible timing for California to see the loss of two refineries at a time when Asia is struggling with oil supplies of its own,” said Patrick De Haan, head of petroleum analysis at GasBuddy.
“If we don’t have some concrete [peace] deal here in the next three weeks, then I’m really nervous for the West Coast this summer in terms of jet fuel,” De Haan told Fortune. “That’s not going to be great for California’s economy.”
Norse Atlantic Airways announced this week the cancelation of all its summer flights from Los Angeles International Airport (LAX). Delta Air Lines is canceling a handful of U.S. flights for now from Detroit to New York. Air Canada cut some flights to New York. United Airlines CEO Scott Kirby said in his April 22 earnings call that United is raising fares up to 20% and proactively canceling flights at off-peak times and days. And struggling Spirit Airlines—pushed over the cliff by the spike in fuel prices—may need a federal bailout to survive.
The biggest headline in Europe this week was German airliner Lufthansa axing 20,000 flights through October.
“It’s not so much gasoline supply on the West Coast that I’d be worried about yet, but it’s jet fuel out of LAX, San Francisco, Seattle, and then it’s diesel,” De Haan said, arguing that nationwide reductions, especially of new flight routes, are likely in order to conserve fuel. “I would look for a lot of route cancellations potentially this summer.”
Refineries primarily churn out gasoline to meet passenger vehicle demand, so supply shortages of refined products typically hit jet fuel first and then diesel. Washington, Oregon, Arizona, Nevada, Hawaii, and Alaska all stand to be among the most impacted as well.
Plans for new fuel and refined products pipelines into California are underway, including from Phillips 66, but the earliest those would come online is 2029.
The California Energy Commission told Fortune that jet fuel stocks remain adequate and within historic norms, although supplies are admittedly tight. For West Coast travelers, the near-term risks are sustained higher prices and airline schedule adjustments—not the physical shortfalls that Europe is facing.
But would that remain the case in June if the Strait of Hormuz energy chokepoint is still blocked? “Our analysis is thorough and ongoing, but we can’t provide a definitive answer on that kind of forecasting,” the CEC said.
One partially saving grace is the Trump administration’s decision to temporarily waive the 106-year-old Jones Act, which requires cargo ships moving between U.S. ports to be U.S. built, flagged, and manned, reducing the number of vessels available to move crude oil and refined products between domestic ports.
The waiver allowing more ships, for instance, to move fuel from the U.S. Gulf Coast through the Panama Canal and up to California to help alleviate shortfalls. The CEC confirmed the waiver is bringing incremental supply to the state.
Looking ahead for relief
While the White House previously touted the Jones Act waiver as a move to lessen the spikes in fuel prices—that impact is minimal—the bigger difference it’s making is the eased logistical movement of supplies to needier domestic areas.
A White House official said California and Alaska count among the biggest beneficiaries of jet fuel deliveries from the Jones Act waiver. And the 60-day waiver could be extended.
Otherwise, California must compete internationally for more expensive and increasingly scarce fuel imports from Asia. The state leans on South Korea, Singapore, Japan, India, and the Middle East for more of its oil and fuel.
“The risk is California has to compete on price to get those barrels, and what’s an already expensive market becomes really expensive,” said oil forecaster Dan Pickering, founder of Pickering Energy Partners consulting and research firm.
While the rest of the country is worried about fuel prices and not physical shortages, California is a “different animal,” Pickering said, “The risk in California is both its price and its availability. And, because availability is tough, the price goes up even more.”
Already, California’s gasoline prices are 45% above the national average. The national average on April 23 for a gallon of regular unleaded was $4.03, while it’s a U.S.-leading $5.85 in California. And there’s a $2 gap between diesel prices in California compared to the national average, $7.49 per gallon versus $5.47.
Despite the geographical and regulatory challenges of building new fuel pipelines to California, several projects have popped up to help fill the gaps left by the refinery closures.
Phillips 66 and Kinder Morgan plan to build the Western Gateway Pipeline System from Texas to Phoenix and southern California. Pipeline developers ONEOK and HF Sinclair are both weighing competing projects.
But the Western Gateway project isn’t slated for completion until 2029, so bridging that gap will prove to be the challenge, De Haan said.
“It’s great news for California because they’ll have better-connected markets,” De Haan said. “California will be a little bit less of a petro island.”
Kinder Morgan CEO Kim Dang said on the company’s earnings call this week that the war in the Middle East highlights the need for the project.
“California has to import some of its supply, and that makes it subject to the variability in global markets,” Dang said. “Instead of bringing in a fair amount of product over the water, they’ll now be bringing in supply from Texas and from the eastern United States. The other thing it does is it serves the Phoenix market, which is also right now reliant on the California refining capacity.
“I think it’s a great solution for California and for Arizona to be able to access domestic supply, as opposed to having to be reliant on the international market,” Dang added.
In the immediacy though, Pickering fears the world is still “dangerously complacent” about the war and the greatest energy supply shock in history. Oil and fuel shortages are almost guaranteed at least through the end of this year, and Pickering doesn’t see a peace deal occurring overnight.
“If they don’t [make a deal], in a month or two, the problems that we’re seeing in Asia are going to be everywhere,” Pickering said. And, if June is when shortages really kick in, well, “June is a day closer every day.”
California
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