ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1921

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South Dakota (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -0.21

Anomaly: -0.47

Rank: 51st Driest

Mean: 0.26

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October - December 1921 South Dakota Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	-0.13	-0.35	61	0.22
2. North Central	0.69	0.47	92	0.22
3. Northeast	0.38	0.05	72	0.33
4. Black Hills	-0.34	-0.74	46	0.39
5. Southwest	0.38	0.01	78	0.37
6. Central	0.18	-0.02	72	0.20
7. East Central	-0.19	-0.38	49	0.19
8. South Central	0.24	0.01	75	0.24
9. Southeast	-0.83	-1.00	28	0.17

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published April 2025, retrieved on April 18, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping