ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1956

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Iowa (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -2.22

Anomaly: -2.25

Rank: 9th Driest

Mean: 0.03

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October - December 1956 Iowa Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	-1.62	-1.76	11	0.14
2. North Central	-1.29	-1.41	20	0.12
3. Northeast	-1.24	-1.32	22	0.08
4. West Central	-1.24	-1.36	19	0.11
5. Central	-1.85	-1.87	10	0.02
6. East Central	-2.01	-1.93	13	-0.08
7. Southwest	-1.42	-1.45	18	0.03
8. South Central	-2.54	-2.49	3	-0.05
9. Southeast	-2.98	-2.91	2	-0.07

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping