ValueAnomalyRankMean

Divisional Palmer Z-Index

August - October 1929

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Michigan (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -1.35

Anomaly: -1.23

Rank: 22nd Driest

Mean: -0.12

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August - October 1929 Michigan Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. West Upper	-0.76	-0.64	49	-0.12
2. East Upper	0.02	0.15	77	-0.13
3. Northwest Lower	-1.32	-1.11	29	-0.22
4. Northeast Lower	-0.58	-0.35	57	-0.22
5. West Central Lower	-1.20	-1.06	30	-0.14
6. Central Lower	-1.44	-1.28	17	-0.15
7. East Central Lower	-0.79	-0.77	42	-0.02
8. Southwest Lower	-1.44	-1.37	19	-0.07
9. South Central Lower	-1.43	-1.45	16	0.02
10. Southeast Lower	-0.89	-0.92	38	0.03

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on June 16, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping