ValueRankAnomalyMean

Divisional Palmer Z-Index

October - December 1985

-4-3-2-11234

Wyoming (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Rank:

Anomaly:

Mean:

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October - December 1985 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Yellowstone Drainage	1.20	99	1.13	0.07
2. Snake Drainage	1.35	108	1.44	-0.10
3. Green and Bear Drainage	1.14	116	1.21	-0.06
4. Big Horn	0.07	61	-0.06	0.13
5. Powder, Little Mo and Tongue Drainages	0.07	66	-0.14	0.21
6. Belle Fourche Drainage	0.81	97	0.48	0.33
7. Cheyenne Niobrara Drainage	0.94	102	0.69	0.25
8. Lower Platte	0.98	98	0.69	0.30
9. Wind River	0.42	82	0.34	0.08
10. Upper Platte	1.02	102	0.89	0.13

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on July 8, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping