Which weather event is most likely to occur if there are warmer than average ocean waters in the pacific? flooding in the southern united states due to el ni? o drought in the southern united states due to la ni? a wet conditions in the pacific northwest due to el ni? o weak trade winds due to la ni? awhich weather event is most likely to occur if there are warmer than average ocean waters in the pacific? flooding in the southern united states due to el ni? o drought in the southern united states due to la ni? a wet conditions in the pacific northwest due to el ni? o weak trade winds due to la ni? a