ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1930

-4-3-2-11234

Michigan (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -4.34

Anomaly: -4.23

Rank: Driest

Mean: -0.11

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October - December 1930 Michigan Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. West Upper	-2.94	-2.82	6	-0.12
2. East Upper	-3.63	-3.49	2	-0.15
3. Northwest Lower	-3.91	-3.71	1	-0.19
4. Northeast Lower	-3.48	-3.30	1	-0.18
5. West Central Lower	-2.99	-2.84	1	-0.15
6. Central Lower	-2.97	-2.85	1	-0.13
7. East Central Lower	-3.37	-3.32	1	-0.05
8. Southwest Lower	-2.55	-2.51	4	-0.04
9. South Central Lower	-2.93	-2.97	2	0.03
10. Southeast Lower	-3.18	-3.14	2	-0.03

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on March 28, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping