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Who makes the Map?








SECTIONS


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What is the U.S. Drought Monitor?

Overview of the U.S. Drought Monitor

The Beginning of the U.S. Drought Monitor

The Evolution of the U.S. Drought Monitor



Who Makes the Map?


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What Does the Map Show?

Drought Intensity Scale

Timescales of Impacts

Summary and Disclaimer



What Data are Used to Make the Map?


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How are the Drought Categories Assigned?

Percentile Method

Convergence of Evidence



What is the Timeline for Production?



Where can I Find the U.S. Drought Monitor?


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How Can I Contribute?

Contributing Your Data and Information

Importance of Drought Impacts


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Who uses the U.S. Drought Monitor?

Uses of the U.S. Drought Monitor

The U.S. Drought Monitor’s Role in Policy



Brochure










The U.S. Drought Monitor is produced through a partnership between the National Drought Mitigation Center at the University of Nebraska‐Lincoln, the United States Department of Agriculture, and the National Oceanic and Atmospheric Administration. One author from the National Drought Mitigation Center, the United States Department of Agriculture, the Desert Research Institute, and NOAA’s Climate Prediction Center or National Centers for Environmental Information assumes responsibility for preparing the map and the accompanying narrative. Each author generally works a 2 week shift and then responsibilities are assigned to the next author. With each author rotation, the previous author informs the current author about ”hot spots” where conditions have been getting progressively worse, or better, but they have not yet tipped the USDM into a more, or less, severe category in the previous week’s report. The transition conversation between authors serves as a way to prioritize the development of the map by focusing first on obvious changes. To be an author, individuals must work at a regional or national center.
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Contact

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National Drought Mitigation Center
University of Nebraska-Lincoln

3310 Holdrege Street, Lincoln, 68583-0988

P.O. Box 830988, Lincoln, 68583-0988

(402) 472–6707

(402) 472-2946

ndmc@unl.edu


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Brief Mentions July 2026

July 29, 2026



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Greenberg expands on meteorology, GIS knowledge in graduate program

July 28, 2026



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NDMC graduate program experiences prepare Winkler for environmental role in Hawaii

July 24, 2026




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