ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1963

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Wyoming (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -1.68

Anomaly: -1.82

Rank: 7th Driest

Mean: 0.14

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October - December 1963 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Yellowstone Drainage	-0.95	-1.02	29	0.07
2. Snake Drainage	-0.61	-0.51	46	-0.10
3. Green and Bear Drainage	-1.46	-1.39	12	-0.06
4. Big Horn	-1.26	-1.39	14	0.13
5. Powder, Little Mo and Tongue Drainages	-1.38	-1.58	7	0.21
6. Belle Fourche Drainage	-1.24	-1.57	5	0.33
7. Cheyenne Niobrara Drainage	-1.69	-1.94	1	0.25
8. Lower Platte	-1.85	-2.15	2	0.30
9. Wind River	-1.40	-1.48	13	0.08
10. Upper Platte	-2.30	-2.43	1	0.13

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on April 3, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping