Higher than normal temperatures in the pacific ocean causing weak trade winds and abnormal weather patterns result in a weather event called

El Niño

explanation: El Niño is a kind of weather pattern that results from  from variations in ocean temperatures in the Pacific ocean. . El Niño is usually accompanied by high air pressure in the western part of the Pacific and low air pressure in the eastern part of the Pacific. Those countries that depend on their own agriculture, fishing, mining- to some extent, particularly those bordering the Pacific Ocean, are usually most affected. In addition to this, it also includes  the warming of the ocean surface or above-average sea surface temperatures