La Niña have a pronounced effect on weather in the U.S. and around the world


 The North American jet stream forms where warm and cold air meet. In North America, the winds swoop down from Alaska toward the continental U.S.

As the jet stream changes shape and location, it can have significant effects on weather, acting like a wall that keeps the region warm to the south and cold to the north.

WSJ 11 November 2021

https://www.wsj.com/articles/la-nina-is-coming-to-shape-winter-forecasts-what-to-know-11636666122?mod=hp_lead_pos12


The Omega-Shaped Jet Stream Responsible for Europe’s Heatwave

https://englundmacro.blogspot.com/2019/06/the-omega-shaped-jet-stream-responsible.html



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