La Niña 2020-2021: An Overview of What It Might Mean for Arizona

La Niña conditions have developed in the tropical Pacific Ocean and current forecasts show that a weak or moderate event is very likely this winter and spring. A few forecast models recently have hinted that a strong event is even possible. Were a weak or moderate event to happen, what might this mean for Arizona? Will rain and snow amounts be less? Will it be warmer than usual? Will there be relevant related hazards or favorable circumstances? In this Extension Climate Fact Sheet about the 2020-2021 La Niña event, we start to answer such questions by providing an overview of this phenomenon and how it possibly will influence weather across the state during the coming months