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Extreme Heat Expected to Impact Millions of Americans Again This Summer
"These are not your grandparents' heatwaves," said one meteorologist.
May 27, 2024
Millions of people in the United States are facing the high likelihood of extreme heat in the coming weeks, with northern states that frequently have relatively temperate summers among those where higher-than-average temperatures are expected this summer, according to federal data.
As The Guardianreported Monday, the National Oceanic and Atmospheric Administration's (NOAA) new predictions for the summer months state that most of New Mexico and Utah have a 60%-70% chance of hotter-than-normal weather, along with parts of Arizona, Texas, and Colorado.
Houston and the surrounding area has already experienced spiking temperatures that were tied to a heat dome that was positioned over Mexico for several weeks. The high atmospheric pressure drove record-breaking heat across Mexico and in Texas, as well as a powerful storm earlier this month that killed at least seven people and left hundreds of thousands of people in the Houston area without power.
NOAA's Heat Risk tool showed that on Monday, a significant stretch of southern Texas was experiencing an "extreme" level of heat, defined as including "little to no overnight relief" and affecting the health and safety of "anyone without effective cooling and/or adequate hydration."
The new tool takes into consideration whether the heat is unusual for the time of the year, whether residents get relief with cooler temperatures in the evenings, and whether temperatures pose an elevated risk of health impacts like heat stroke or heat exhaustion.
NOAA found that the entire Northeast, from Maine to New Jersey and Pennsylvania, has a 40%-50% chance of having above-average temperatures from June through August.
"We can expect another dangerous hot summer season, with daily records already being broken in parts of Texas and Florida," Kristy Dahl, climate scientist for the Climate and Energy program at the Union of Concerned Scientists, toldThe Guardian. "As we warm the planet, we are going to see climate disasters pile up and compound against each other because of the lack of resilience in our infrastructure and government systems."
The predictions come days after the consumer advocacy group Public Citizen released a report, Scorched States, about state laws that protect outdoor workers from extreme heat—and those that don't.
As many as 2,000 U.S. workers die every year from laboring in extreme heat, said Public Citizen, even though "every workplace illness, injury, and fatality caused by heat stress is avoidable, and relatively simple preventative measures—water, shade, and breaks—have proven extremely effective at protecting workers."
The Occupational Safety and Health Administration's forthcoming heat standard rules are not expected to be finalized until at least 2026, but states including Washington, Colorado, and Minnesota have issued their own labor laws to protect workers from heat-related injuries.
The Guardian pointed out that the extreme heat expected this summer will likely take hold as the Earth transitions away from El Niño—the natural phenomenon that causes ocean temperatures to rise—and toward La Niña.
"As we transition to La Niña, it still looks to be a potentially record-breaking year. That clearly suggests to me that the anthropogenic signal is there," James Marshall Shepherd, director of the University of Georgia's atmospheric sciences program, toldThe Guardian. "I am also worried about the ocean temperatures, which are very warm, particularly as we approach the Atlantic hurricane season."
"Attribution studies are pretty decisive that heatwaves will continue to be more intense and frequent" as the planet warms, Shepherd said. "These are not your grandparents' heatwaves."
Last year, scientists found that neither the hot and dry conditions that led to destructive wildfires in Canada, nor extreme heatwaves that took hold in Europe and North America, would have been as likely to occur without the planetary heating that's been linked to continued fossil fuel extraction.
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NOAA Predicts 'Extraordinary' Atlantic Hurricane Season as Ocean Temperatures Soar
"The fun-filled summer season has increasingly become a time of dread for the dangers that await," said one climate scientist.
May 23, 2024
The U.S. National Oceanic and Atmospheric Administration warned Thursday that it expects "above-normal hurricane activity in the Atlantic basin this year" due to rising ocean temperatures related to the climate emergency and La Niña conditions in the Pacific Ocean.
"NOAA's outlook for the 2024 Atlantic hurricane season, which spans from June 1 to November 30, predicts an 85% chance of an above-normal season, a 10% chance of a near-normal season, and a 5% chance of a below-normal season," the agency—which is part of the U.S. Department of Commerce—said in a statement.
Rick Spinrad, who heads NOAA,
said the agency is bracing for an "extraordinary" Atlantic hurricane season.
NOAA is forecasting between 17 and 25 total named storms—which have winds of 39 mph or higher—with 8-13 of these predicted to become hurricanes, which have winds of 74 mph or higher. The agency is predicting 4-7 major hurricanes, defined as having winds in excess of 111 mph. NOAA said forecasters have 70% confidence in these predictions.
"Of note, the forecast for named storms, hurricanes, and major hurricanes is the highest NOAA has ever issued for the May outlook," Spinrad told reporters, adding that "the warmer ocean means it's a more energetic ocean."
The predicted increase in activity is "due to a confluence of factors, including near-record warm ocean temperatures in the Atlantic Ocean, development of La Niña conditions in the Pacific, reduced Atlantic trade winds, and less wind shear, all of which tend to favor tropical storm formation," NOAA explained.
"As one of the strongest El Niños ever observed nears its end, NOAA scientists predict a quick transition to La Niña conditions, which are conducive to Atlantic hurricane activity because La Niña tends to lessen wind shear in the tropics," the agency added. "At the same time, abundant oceanic heat content in the tropical Atlantic Ocean and Caribbean Sea creates more energy to fuel storm development."
Florida meteorologist Michael Lowry, the hurricane specialist at WPLG in Miami, wrote Wednesday for Yale Climate Connections that "waters across the Atlantic's tropical belt—extending from the coast of Africa through the Caribbean—are hotter now than in any other late May on record, with over 90% of the area's sea surface engulfed in record or near-record warmth."
"The extent of marine heat has never been greater heading into a hurricane season, outpacing by wide margins the previous late May record-holder in 2005, a year remembered for one of the most active and destructive hurricane seasons in modern history." Among those storms was Hurricane Katrina.
Ocean temperatures are soaring as policymakers around the world continue to not only resist phasing out the fossil fuels driving the planetary emergency but also expand oil, gas, and coal development. Many coastal communities are unprepared for the extreme weather events that are increasing as air and sea temperatures rise.
"As a climate scientist that tracks hurricane activity, I recognize that the fun-filled summer season has increasingly become a time of dread for the dangers that await," Astrid Caldas, a senior climate scientist for community resilience at the Union of Concerned Scientists, said Thursday. "The people and places that have found themselves in the path of a tropical storm can attest to its utter and enduring devastation, which often hits communities of color and low-income communities the hardest."
"U.S. coastal communities are tired of crossing their fingers and hoping these storms of epic, record-breaking proportions veer away from their homes, dissipate, or spin out over the Atlantic," Caldas added. "It's imperative that local, state, and federal policymakers and emergency planners help keep communities safe by prioritizing investments to get homes, businesses, and infrastructure in frontline communities climate-ready and be prepared to ensure a quick and just recovery should disaster strike. Reining in heat-trapping emissions driving the climate crisis is also essential."
According to NOAA, there were 28 billion-dollar natural disasters in the United States alone last year—an unwelcome new record that cost Americans at least $92.9 billion.
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Coral Bleaching 'Off the Charts' in Atlantic as NOAA Warns Ocean Going 'Crazy Haywire'
"We had to add additional bleaching alert levels to appropriately categorize just how hot it was," said a coral reefs expert at the agency.
May 17, 2024
The phrase "off the charts" is no exaggeration in the National Oceanic and Atmospheric Administration's latest warning about a global coral bleaching event that scientists have linked to rising ocean temperatures and heat stress.
Derek Manzello, coordinator of NOAA's Coral Reef Watch Program, told reporters Thursday that about 60.5% of the world's coral reefs are now experiencing heat stress severe enough to cause bleaching, which can make the reefs more vulnerable to disease and harm the biodiversity they support.
Manzello said at the press briefing that after observing the first months of the coral bleaching event, which began in early 2023, NOAA changed its existing bleaching alert system because conditions were so abnormally warm in the Atlantic Ocean, Gulf of Mexico, and Caribbean Sea.
The agency's new bleaching alert system categorizes heat stress for coral reefs on a scale of 1-5, with Alert Level 5 representing ocean heat that could kill "approximately 80% or more of corals on a particular reef," Manzello said.
"We had to add additional bleaching alert levels to appropriately categorize just how hot it was," he said, with Level 5 "analogous to a Category 5 hurricane or cyclone."
"I hate that I have to keep using that word 'unprecedented.'... But, again, we are seeing unprecedented patterns again this year."
The world's oceans, Manzello, said, are going "crazy haywire."
In the Caribbean this year, heat stress off the coasts of Panama, Costa Rica, Nicaragua, and Colombia are now at levels that in previous years weren't seen until the summer months.
"I hate that I have to keep using that word 'unprecedented,'" Manzello toldThe New York Times. "But, again, we are seeing unprecedented patterns again this year."
The bleaching that took place last year resulted in coral mortality of at least 50% and as high as 93% in reefs off the coast of Huatulco, Mexico, according to a team of Mexican scientists.
In the Atlantic, fossil fuel-driven planetary heating has been exacerbated by El Niño—the natural phenomenon that causes warmer-than-normal ocean surface temperatures—and has caused the "most unprecedented and extreme" bleaching-level heat stress observed in the past year.
Manzello said 99.7% of reef areas in the Atlantic have experienced heat stress that could cause bleaching.
"The Atlantic Ocean has been off the charts," he said.
Scientists have recorded four global bleaching events since 1998 and have linked all of them to warmer ocean temperatures. Since 1950, the world has lost half of its coral reefs, according to a 2021 study.
Along with serving marine life, a quarter of which rely on coral reefs at some point in their life cycles, reefs also protect coasts from storms, whose growing severity in recent years scientists have also linked to planetary heating.
The current bleaching event has affected reefs off the coasts of at least 62 countries and territories.
Scientists earlier this year confirmed that 2023 was the hottest year in human history and the warmest year on record for the world's oceans, which absorb more than 90% of excess heat from greenhouse gas emissions.
"I am very worried about the state of the world's coral reefs," Manzello said. "We are seeing [ocean temperatures] play out right now that are very extreme in nature."
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