"WASHINGTON — The dangerous heat wave shattering March records all over the U.S. Southwest is more than just another extreme weather blip. It’s the latest next-level weather wildness that is occurring ever more frequently as Earth’s warming builds.

Experts said unprecedented and deadly weather extremes that sometimes strike at abnormal times and in unusual places are putting more people in danger. For example, the Southwest is used to coping with deadly heat, but not months ahead of schedule, including a 112 degrees Fahrenheit (44.4 degrees Celsius) reading in two Arizona communities on Friday that smashed the highest March temperature recorded in the U.S. Two places in Southern California also hit that same temperature. All four spots are clustered within about 50 miles (80.5 kilometers) of each other.

“This is what climate change looks like in real time: extremes pushing beyond the bounds we once thought possible,” said University of Victoria climate scientist Andrew Weaver. “What used to be unprecedented events are now recurring features of a warming world.”

March’s heat would have been virtually impossible without human-caused climate change, according to a report Friday by World Weather Attribution, an international group of scientists who study the causes of extreme weather events."

Seth Borenstein reports for the Associated Press March 20, 2026. [2]

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"Across the West, Record Heat Is Colliding With a Snow Drought" (New York Times) [3]