ValueRankAnomalyMean

Divisional Palmer Z-Index

September - November 1976

-4-3-2-11234

Wyoming (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Rank:

Anomaly:

Mean:

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September - November 1976 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Yellowstone Drainage	-1.04	26	-1.10	0.06
2. Snake Drainage	-1.64	13	-1.63	-0.01
3. Green and Bear Drainage	-1.72	4	-1.77	0.05
4. Big Horn	0.09	68	-0.04	0.14
5. Powder, Little Mo and Tongue Drainages	0.62	97	0.42	0.20
6. Belle Fourche Drainage	-0.18	58	-0.50	0.32
7. Cheyenne Niobrara Drainage	-0.09	59	-0.36	0.27
8. Lower Platte	-0.76	32	-1.08	0.32
9. Wind River	-0.72	42	-0.81	0.10
10. Upper Platte	-1.59	8	-1.79	0.20

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 12, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping