Regional Mapping

Regional Data Info
Please note, Degree Days are not available for Great Plains, Souther Plains and Gulf Coast, Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales. Data are available for bulk download.
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Palmer Drought Severity Index
September 2019
-4-3-2-11234
Climate Regions (Hover over a Climate Region)
PDSIPalmer Drought Severity Index (PDSI):
Anomaly:
Rank:
Mean:
September 2019 Climate Regions Regional Palmer Drought Severity Index
Climate Region
Value
Anomaly
Rank
130 Years
1901-2000 Mean
Northeast3.082.981210.10
Upper Midwest5.445.211290.23
Ohio Valley3.813.701260.11
Southeast-3.00-2.9316-0.07
Northern Rockies and Plains6.815.991300.82
South3.673.621180.05
Southwest-1.50-1.95420.45
Northwest-0.89-0.8655-0.03
West-0.14-0.26730.12

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