ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1999

-4-3-2-11234

Iowa (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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October - December 1999 Iowa Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	-2.19	-2.33	5	0.14
2. North Central	-1.78	-1.89	12	0.12
3. Northeast	-1.26	-1.34	21	0.08
4. West Central	-1.44	-1.55	12	0.11
5. Central	-1.92	-1.94	9	0.02
6. East Central	-1.96	-1.89	15	-0.08
7. Southwest	-1.66	-1.69	12	0.03
8. South Central	-1.77	-1.73	14	-0.05
9. Southeast	-2.01	-1.95	12	-0.07

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on June 22, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping