Historical Palmer Drought Indices

Maps

Monthly maps of drought conditions in the contiguous U.S. as measured by the Palmer Drought Severity Index, Palmer Hydrological Drought Index, Palmer Modified Drought Index, and Palmer Z-Index (Palmer, 1965) are provided for January 1900—October 2017. Animations of any set of monthly maps for any period desired can be viewed by selecting the beginning and ending dates of interest.



Palmer Drought Severity Index
November 1934

Dwell
First
Dwell
Last
November 1934 Palmer Drought Severity Index

Data File: Palmer Drought Severity Index Divisional Data