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The 2026 Southwest U.S. heat wave was one of the six most astonishing weather events of the century » Yale Climate Connections

The 2026 Southwest U.S. heat wave was one of the six most astonishing weather events of the century » Yale Climate Connections

From the Pacific Northwest to Antarctica, it's extraordinary warmth that's punching through climate norms with the most force.

Winter atmospheric circulation over North America appears to have shifted, driven by greenhouse-gas forced changes in the jet stream. The atmosphere has been restructured in a way that favors extreme ridges over the West.

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