ValueAnomalyRankMean

Divisional Palmer Z-Index

November 2002 - January 2003

-4-3-2-11234

Wyoming (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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November 2002 - January 2003 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Yellowstone Drainage	-0.46	-0.55	47	0.09
2. Snake Drainage	-0.54	-0.46	48	-0.07
3. Green and Bear Drainage	-1.48	-1.37	14	-0.11
4. Big Horn	-0.78	-0.85	35	0.07
5. Powder, Little Mo and Tongue Drainages	-1.01	-1.13	21	0.12
6. Belle Fourche Drainage	-0.65	-0.89	29	0.24
7. Cheyenne Niobrara Drainage	-0.81	-0.96	12	0.14
8. Lower Platte	-1.15	-1.29	10	0.15
9. Wind River	-0.80	-0.84	30	0.04
10. Upper Platte	-1.53	-1.56	12	0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on June 15, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping