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The Global Gridded Standardized Precipitation Index (SPI) is derived from the CMORPH daily dataset and includes timescales of 1, 3, 6 and 9 months. The NOAA CMORPH precipitatio
The Global Gridded Standardized Precipitation Index (SPI) is derived from the CMORPH daily dataset and includes timescales of 1, 3, 6 and 9 months. The NOAA CMORPH precipitatio
The Global Gridded Standardized Precipitation Index (SPI) is derived from the CMORPH daily dataset and includes timescales of 1, 3, 6 and 9 months. The NOAA CMORPH precipitatio
Period of Record
1998 to Present
File Format
netcdf-4
Looking for State or Local Maps?
The Current Conditions page features national conditions. You can also explore maps of current and future conditions by state, watershed, county, or city.