Value Anomaly Rank Mean

Divisional Palmer Z-Index Anomaly (1901-2000 mean)

November 1994 - January 1995

-7-5-3-11357

Wyoming (Hover over a Climate Division)

Z-Index Palmer Z-Index : --

Anomaly: --

Rank: -- Driest

Mean: --

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*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

November 1994 - January 1995 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Yellowstone Drainage	0.95	0.86	93	0.09
2. Snake Drainage	0.43	0.50	89	-0.07
3. Green and Bear Drainage	0.12	0.24	85	-0.11
4. Big Horn	0.40	0.33	85	0.07
5. Powder, Little Mo and Tongue Drainages	0.68	0.57	100	0.12
6. Belle Fourche Drainage	0.29	0.05	74	0.24
7. Cheyenne Niobrara Drainage	0.43	0.29	88	0.14
8. Lower Platte	0.41	0.26	89	0.15
9. Wind River	0.53	0.49	96	0.04
10. Upper Platte	0.20	0.16	77	0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 29, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping