Value Anomaly Rank Mean

Divisional Palmer Z-Index

October - December 1924

-4-3-2-11234

Iowa (Hover over a Climate Division)

Z-Index Palmer Z-Index : -0.58

Anomaly: -0.60

Rank: 41st Driest

Mean: 0.03

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*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

October - December 1924 Iowa Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	-0.42	-0.56	44	0.14
2. North Central	-0.53	-0.65	42	0.12
3. Northeast	-0.72	-0.80	31	0.08
4. West Central	-0.48	-0.60	44	0.11
5. Central	-0.71	-0.73	38	0.02
6. East Central	-0.64	-0.56	40	-0.08
7. Southwest	-1.14	-1.17	26	0.03
8. South Central	-1.09	-1.04	26	-0.05
9. Southeast	-0.19	-0.13	61	-0.07

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 24, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping