jet stream

noun

: a long narrow meandering current of high-speed winds near the tropopause blowing from a generally westerly direction and often exceeding a speed of 250 miles (402 kilometers) per hour

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The jet stream, essentially a river of air in the atmosphere that storms flow through, is locked in an almost perfect line from west to east, and will continue to funnel fast-moving storms across the northern tier of the Lower 48. —

Artemis Moshtaghian, CNN, 8 Feb. 2025 This jet stream gathers moisture from the tropics near the equator and sweeps it toward the poles. —

Janet Loehrke, USA TODAY, 4 Feb. 2025 The last time Britain experienced a storm of this strength was early December with Storm Darragh, which was also influenced by a strong jet stream. —

Claire Moses, New York Times, 24 Jan. 2025 Most of that turbulence is stirred by seasonal changes in pressure gradients and the jet stream sitting over the Great Basin and the Four Corners region that cause the high, dense air to spill its banks. —

Jeffrey Kluger, TIME, 14 Jan. 2025 See all Example Sentences for jet stream