Neither El NiƱo nor La NiƱa are observed or expected in coming 6 months.
These changes disrupt the large-scale air movements in the tropics, triggering a cascade of global side effects.
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In winter, it influences the jet stream and the path of storms that move from the Pacific over the United States.
Here is a description of the categories and criteria they use.
In the summer, El NiƱo's primary influence on U.