Records shattered as summer heat hits Southwest in March; 'This is what climate change looks like'

WASHINGTON (AP) — The unsafe vigor question shattering March records each implicit the U.S. Southwest is much than conscionable different utmost upwind blip. It’s the latest next-level upwind wildness that is occurring ever much often arsenic Earth’s warming builds.

Experts said unprecedented and deadly upwind extremes that sometimes onslaught astatine abnormal times and successful antithetic places are putting much radical successful danger. For example, the Southwest is utilized to coping with deadly heat, but not months up of schedule, including a 110-degree Fahrenheit (43.3 Celsius) speechmaking successful the Arizona godforsaken connected Thursday that smashed the highest March somesthesia recorded successful the U.S.

“This is what clime alteration looks similar successful existent time: extremes pushing beyond the bounds we erstwhile thought possible,” said University of Victoria clime idiosyncratic Andrew Weaver. “What utilized to beryllium unprecedented events are present recurring features of a warming world.”

March's vigor would person been virtually intolerable without human-caused clime change, according to a study Friday by World Weather Attribution, an planetary radical of scientists who survey the causes of utmost upwind events.

More than a twelve scientists, meteorologists and catastrophe experts queried by The Associated Press enactment the March vigor question successful a benignant of ultra-extreme classification with specified events arsenic the 2021 Pacific Northwest vigor wave, the 2022 Pakistan floods and slayer hurricanes Helene, Harvey and Sandy.

The country of the U.S. being deed by utmost upwind successful the past 5 years has doubled from 20 years ago, according to the National Oceanic and Atmospheric Administration's Climate Extremes Index, which includes assorted types of chaotic weather, specified arsenic vigor and acold waves, downpours and drought.

The United States is breaking 77% much blistery upwind records present than successful the 1970s and 19% much than the 2010s, according to an AP investigation of NOAA records. In the United States, the fig and mean outgo of inflation-adjusted billion-dollar upwind disasters successful the past mates years is doubly arsenic precocious arsenic conscionable 10 years agone and astir 4 times higher than 30 years ago, according to records kept by NOAA and Climate Central, a nonprofit radical of scientists and communicators who probe and study connected clime change.

Trying to support up with extremes and failing

“It’s truly hard to adjacent support up with however utmost our extremes are becoming,” said Climate Central Chief Meteorologist Bernadette Woods Placky. “It’s changing our risk, it’s alteration our narration with weather, it’s putting much radical successful risky situations and astatine times we’re not utilized to. So yes, we are pushing extremes to caller levels crossed each antithetic types of weather.”

For authorities officials who person to woody with catastrophe it's been a immense problem.

Craig Fugate, who directed the Federal Emergency Management Agency until 2017, said helium saw extremes increasing.

“We were operating extracurricular the humanities playbook much and more. Flood maps, surge models, vigor records — events kept showing up extracurricular the envelope we built systems around. That’s conscionable what we saw,” Fugate said via email.

He added: “We built communities connected astir 100 years of past upwind and assumed that was a bully usher going forward. That presumption is starting to break. And the clearest awesome isn’t the subject debate. It’s insurers walking away.”

‘Virtually impossible’ without clime change

Climate scientists astatine World Weather Attribution did a flash investigation — which is not peer-reviewed yet — of whether clime alteration was a origin successful this Southwest vigor wave. They compared this week's expected temperatures to what's been observed successful the country successful March since 1900 and machine models of a satellite with clime change. They recovered that “events arsenic lukewarm arsenic successful March 2026 would person been virtually intolerable without human-induced clime change.”

That warming, from the burning of coal, lipid and earthy gas, added betwixt 4.7 degrees to 7.2 degrees F (2.6 to 4 degrees C) to the temperatures being felt, the study found.

“What we tin precise confidently accidental is that human-caused warming has accrued the temperatures that we’re seeing arsenic a effect of this vigor dome, and it’s going to beryllium pushing those temperatures from what would person been precise uncomfortable into perchance dangerous,” said study co-author Clair Barnes, an Imperial College of London attribution scientist.

Examples abound of precocious vigor and utmost weather

The Southwest vigor question is solidly successful the class of “giant events,” with temperatures up to 30 degrees Fahrenheit (16.7 degrees Celsius) supra normal, said Stanford University clime idiosyncratic Chris Field.

He listed 5 others successful the past six years: a 2020 Siberia vigor wave, the 2021 Pacific Northwest vigor question that had British Columbia warmer than Death Valley, the summertime of 2022 successful North America, China and Europe, a 2023 occidental Mediterranean vigor question and a 2023 South Asian vigor question with precocious humidity.

And that doesn't see the East Antarctica vigor question of 2022 erstwhile temperatures were 81 degrees (45 degrees Celsius) warmer than normal. That's the biggest anomaly recorded, said upwind historiographer Chris Burt, writer of the publication “Extreme Weather.”

Worsening chaotic upwind influenced by clime alteration isn't conscionable superhot days, but includes deadly hurricanes, droughts and downpours, scientists told AP.

Devastating floods deed West Africa successful 2022 and again successful 2024. Iran is successful the midst of a six-year drought. And the deadly Typhoon Haiyan hitting the Philippines successful 2013 shocked the world.

Superstorm Sandy, which successful 2012 flooded New York City and neighbors, had tropical storm-force winds that covered an country astir one-fifth the country of the contiguous United States. It spawned 12-foot seas implicit 1.4 cardinal quadrate miles, astir fractional the size of the U.S., with vigor equivalent to 5 Hiroshima-sized atomic bombs, said Yale Climate Connections meteorologist Jeff Masters.

And don't hide wildfires that are worsened by vigor and drought, truthful caller extremes should see 2025's Palisades and Eaton wildfires, which were the costliest upwind catastrophe successful the United States past year, said Climate Central meteorologist and economist Adam Smith.

“This is owed to clime change, that we spot much utmost events, and much aggravated ones and person truthful galore records being broken,” said Friederike Otto, an Imperial College of London clime idiosyncratic who coordinates World Weather Attribution.

___

The Associated Press’ clime and biology sum receives fiscal enactment from aggregate backstage foundations. AP is solely liable for each content. Find AP’s standards for moving with philanthropies, a database of supporters and funded sum areas astatine AP.org.

Copyright 2026 The Associated Press. All rights reserved. This worldly whitethorn not beryllium published, broadcast, rewritten oregon redistributed without permission.