How to Read a Palmer Drought Severity Map
This map depicts regions of the nation with a long term deficit or surplus of rainfall as determined by the Palmer Drought Severity Index.
The Palmer Drought Severity Index is a long-term meteorological drought severity index produced by the NOAA/USDA (Department of Agriculture) Joint Agricultural Weather Facility. The index depicts prolonged times, as in months or years, of abnormal dryness or wetness.
This map is updated once each week.
