ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1993

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Wyoming (Hover over a Climate Division)

Z-IndexPalmer Z-Index: 0.93

Anomaly: 0.79

Rank: 28th Wettest

Mean: 0.14

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October - December 1993 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Yellowstone Drainage	-0.68	-0.75	37	0.07
2. Snake Drainage	-0.63	-0.53	44	-0.10
3. Green and Bear Drainage	0.11	0.17	77	-0.06
4. Big Horn	0.53	0.40	85	0.13
5. Powder, Little Mo and Tongue Drainages	0.48	0.27	89	0.21
6. Belle Fourche Drainage	1.34	1.01	110	0.33
7. Cheyenne Niobrara Drainage	1.56	1.31	121	0.25
8. Lower Platte	1.63	1.34	120	0.30
9. Wind River	0.48	0.40	84	0.08
10. Upper Platte	1.75	1.62	121	0.13

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published April 2025, retrieved on April 18, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping