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Palmer drought severity index forecast May - July 2012 (based on ECHAM 7-mo weather forecast)


Original Data Basin Creation Date
2012-04-25 13:56:46
Original Data Basin Modified Date
2012-07-09 16:12:03


The Palmer Drought Severity Index (PDSI) is a measure of drought derived from both precipitation and temperature. Negative (i.e., dry) values of PDSI are closely associated with a high potential for wildland fire. PDSI is based on a supply-and-demand model of soil moisture originally developed by Wayne Palmer, who published his method in the 1965 paper Meteorological Drought for the Office of Climatology of the U.S. Weather Bureau.The index has proven to be most effective in indicating long-term drought (or wetness) over a matter of several months. PDSI calculations are standardized for an individual station (or grid cell) based on the long-term variability of precipitation and temperature at that location. PDSI values can thus [...]


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Data source
United States Forest Service, MAPSS team--Raymond Drapek<br />
Harvested on Fri May 23 09:37:39 MDT 2014 from Data Basin Service

Additional Information


Type Scheme Key
UniqueKey Data Basin a19a5211b20749cf9bd78888e776ab74

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