In 2020, the United States saw wetter conditions than the average recorded from 1931 to 1990, with a score of 1.84 on the Palmer Index. Meanwhile, 2000 was the driest year within the indicated period, with a Palmer Index of -4.44.
Annual drought severity in the United States from 1990 to 2020, based on Palmer Drought Severity Index
The Palmer Drought Severity Index uses temperature and precipitation data to estimate 'relative' dryness. The index ranges from -10 to +10. An index value of zero represents the average moisture conditions observed between 1931 and 1990. Positive values mean wetter than average, negatives mean drier than average.
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OWID. (March 1, 2022). Annual drought severity in the United States from 1990 to 2020, based on Palmer Drought Severity Index [Graph]. In Statista. Retrieved November 23, 2024, from https://www.statista.com/statistics/1293480/annual-drought-severity-us/
OWID. "Annual drought severity in the United States from 1990 to 2020, based on Palmer Drought Severity Index." Chart. March 1, 2022. Statista. Accessed November 23, 2024. https://www.statista.com/statistics/1293480/annual-drought-severity-us/
OWID. (2022). Annual drought severity in the United States from 1990 to 2020, based on Palmer Drought Severity Index. Statista. Statista Inc.. Accessed: November 23, 2024. https://www.statista.com/statistics/1293480/annual-drought-severity-us/
OWID. "Annual Drought Severity in The United States from 1990 to 2020, Based on Palmer Drought Severity Index." Statista, Statista Inc., 1 Mar 2022, https://www.statista.com/statistics/1293480/annual-drought-severity-us/
OWID, Annual drought severity in the United States from 1990 to 2020, based on Palmer Drought Severity Index Statista, https://www.statista.com/statistics/1293480/annual-drought-severity-us/ (last visited November 23, 2024)
Annual drought severity in the United States from 1990 to 2020, based on Palmer Drought Severity Index [Graph], OWID, March 1, 2022. [Online]. Available: https://www.statista.com/statistics/1293480/annual-drought-severity-us/
