El Niño ~ An Overview

Typically during a period of El Niño, there is a dramatic rearrangement of precipitation and wind patterns resulting from the northeastward movement of the Indonesian low pressure system. This change results in drought to the countries along the western part of the Pacific and torrential rains to the normally dry islands and coast near the equator on the eastern side of the Pacific (as seen in the figures below).

(Both taken from pmel.noaa.gov)

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