ValueRankAnomalyMean

Divisional Palmer Z-Index

October - December 1913

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Wyoming (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Rank:

Anomaly:

Mean:

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October - December 1913 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Yellowstone Drainage	0.61	85	0.54	0.07
2. Snake Drainage	-0.26	60	-0.17	-0.10
3. Green and Bear Drainage	0.37	90	0.44	-0.06
4. Big Horn	0.50	82	0.37	0.13
5. Powder, Little Mo and Tongue Drainages	0.10	67	-0.11	0.21
6. Belle Fourche Drainage	-0.48	31	-0.81	0.33
7. Cheyenne Niobrara Drainage	-0.02	59	-0.27	0.25
8. Lower Platte	1.51	117	1.21	0.30
9. Wind River	-0.15	58	-0.23	0.08
10. Upper Platte	1.60	120	1.47	0.13

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 14, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping