ValueRankAnomalyMean

Palmer Drought Severity Index

September 1910

-4-3-2-11234

Climate Regions (Hover over a Climate Region)

PDSIPalmer Drought Severity Index (PDSI):

Rank:

Anomaly:

Mean:

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September 1910 Climate Regions Regional Palmer Drought Severity Index

Climate Region	Value	Rank 130 Years	Anomaly	1901-2000 Mean
Northeast	-2.24	19	-2.34	0.10
Upper Midwest	-4.56	2	-4.79	0.23
Ohio Valley	1.32	83	1.21	0.11
Southeast	1.36	93	1.43	-0.07
Northern Rockies and Plains	-2.73	25	-3.55	0.82
South	-2.89	21	-2.94	0.05
Southwest	-3.10	17	-3.55	0.45
Northwest	-2.41	24	-2.38	-0.03
West	-2.20	31	-2.32	0.12

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Regional Mapping, published July 2025, retrieved on July 12, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/mapping