ValueAnomalyRankMean

Divisional Palmer Z-Index

November 1920 - January 1921

-4-3-2-11234

Michigan (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -0.96

Anomaly: -0.86

Rank: 28th Driest

Mean: -0.10

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November 1920 - January 1921 Michigan Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. West Upper	-0.75	-0.61	39	-0.14
2. East Upper	-1.16	-1.02	18	-0.14
3. Northwest Lower	-0.67	-0.51	45	-0.16
4. Northeast Lower	-0.10	0.06	60	-0.16
5. West Central Lower	-1.04	-0.85	30	-0.19
6. Central Lower	-0.21	-0.12	55	-0.09
7. East Central Lower	-0.06	-0.02	56	-0.03
8. Southwest Lower	-1.12	-1.10	21	-0.02
9. South Central Lower	-0.32	-0.35	41	0.04
10. Southeast Lower	-0.20	-0.18	50	-0.02

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on March 27, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping