ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1989

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Iowa (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -1.63

Anomaly: -1.65

Rank: 16th Driest

Mean: 0.03

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October - December 1989 Iowa Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	-2.50	-2.64	2	0.14
2. North Central	-2.36	-2.48	4	0.12
3. Northeast	-1.21	-1.28	23	0.08
4. West Central	-0.95	-1.06	25	0.11
5. Central	-1.09	-1.11	25	0.02
6. East Central	-1.73	-1.65	19	-0.08
7. Southwest	-0.31	-0.34	53	0.03
8. South Central	-0.95	-0.91	30	-0.05
9. Southeast	-1.52	-1.45	18	-0.07

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on April 3, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping