National Drought Mitigation Center Website > Monitoring Tools > Drought Monitoring in the U.S.

Thursday, May 23, 2013

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National Drought Mitigation Center

Monitoring Tools

Drought Monitoring in the U.S.

Resource Detail

Standardized Precipitation Index

Web Address: http://www.wrcc.dri.edu/spi/spi.html

Description: Current climate division scale maps for SPI, accumulated precipitation, accumulated precipitation departure from normal, percentage of average, and precipitation percentile for the following time scales: 1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-, 9-, 10-, 11-, 12-, 15-, 18-, 24-, 30-, 36-, 48-, 60-, 72-month.

Organization: Western Regional Climate Center

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