ValueAnomalyRankMean

Palmer Drought Severity Index

September 1903

-4-3-2-11234

Climate Regions (Hover over a Climate Region)

PDSIPalmer Drought Severity Index (PDSI):

Anomaly:

Rank:

Mean:

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September 1903 Climate Regions Regional Palmer Drought Severity Index

Climate Region	Value	Anomaly	Rank 130 Years	1901-2000 Mean
Northeast	2.75	2.65	113	0.10
Upper Midwest	5.15	4.92	128	0.23
Ohio Valley	-0.41	-0.52	55	0.11
Southeast	-0.17	-0.10	69	-0.07
Northern Rockies and Plains	3.88	3.06	105	0.82
South	-0.43	-0.48	59	0.05
Southwest	-0.51	-0.96	60	0.45
Northwest	0.49	0.52	83	-0.03
West	-0.84	-0.96	51	0.12

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Regional Mapping, published March 2025, retrieved on April 5, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/mapping