ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1973

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Illinois (Hover over a Climate Division)

Z-IndexPalmer Z-Index: 1.44

Anomaly: 1.50

Rank: 24th Wettest

Mean: -0.06

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October - December 1973 Illinois Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	0.92	0.95	99	-0.03
2. Northeast	0.74	0.79	90	-0.06
3. West	2.26	2.38	124	-0.12
4. Central	1.59	1.64	113	-0.05
5. East	0.56	0.63	88	-0.07
6. West Southwest	1.38	1.43	109	-0.05
7. East Southeast	1.07	1.12	102	-0.05
8. Southwest	1.44	1.50	113	-0.06
9. Southeast	1.26	1.29	105	-0.02

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