ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 2007

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Wyoming (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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October - December 2007 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Yellowstone Drainage	1.26	1.19	101	0.07
2. Snake Drainage	1.02	1.11	102	-0.10
3. Green and Bear Drainage	-0.90	-0.84	28	-0.06
4. Big Horn	0.77	0.64	96	0.13
5. Powder, Little Mo and Tongue Drainages	0.15	-0.05	69	0.21
6. Belle Fourche Drainage	-0.47	-0.80	33	0.33
7. Cheyenne Niobrara Drainage	-0.18	-0.43	51	0.25
8. Lower Platte	0.38	0.08	76	0.30
9. Wind River	0.27	0.19	75	0.08
10. Upper Platte	-0.51	-0.65	41	0.13

Citing This Page

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