Experiencing System Outages
Please note: Due to storm impacts on systems at NOAA's National Centers for Environmental Information in Asheville, NC, certain maps and statistics on Drought.gov may be experiencing issues. We apologize for any inconvenience at this time. Read more.
Physical Sciences Laboratory (PSL)
The Evaporative Demand Drought Index (EDDI) is an experimental tool that examines how anomalous the atmospheric evaporative demand (E0; also known as "the thirst of the atmosphere") is for a given
The National Weather Service's Climate Prediction Center (CPC) produces a Global Unified Daily Precipitation product from 1979-present.
The Landscape Evaporative Response Index (LERI) is an experimental drought monitoring and early warning guidance tool that measures the anomaly in the actual evapotranspiration (ETa) from the