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Global drought prediction and analysis tools produced by IRI in collaboration with NOAA CPC, and the University of Maine.
Worldwide predictions for temperature and precipitation from the International Research Institute (IRI) for Climate and Society at Columbia University.
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Megadroughts are persistent, multi-year drought events that stand out as especially extreme in terms of severity, duration, or spatial extent when compared to other droughts of the last two thousand years
Megadroughts have occurred on every continent outside of Antarctica, often causing major disturbances to ecosystems (e.g., forests in the Southwest U.S.) and societies (e.g
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At the end of summer 2021, the U.S. Drought Monitor reported 90% of the West in drought with 54% in Extreme Drought (D3) or Exceptional Drought (D4). Reservoir levels were low across almost the whole West, including the Colorado River Basin's Lakes Powell and Mead at just 31% and 35% of capacity, respectively. Multiple states rated most of their rangelands and pasture in poor to very poor
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December 2014