Value Anomaly Rank Mean

Divisional Palmer Z-Index

October - December 1928

-4-3-2-11234

Wyoming (Hover over a Climate Division)

Z-Index Palmer Z-Index : --

Anomaly: --

Rank: -- Driest

Mean: --

Text Labels

Download: CSV JSON XML

*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

October - December 1928 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Yellowstone Drainage	-0.16	-0.23	57	0.07
2. Snake Drainage	-0.38	-0.28	55	-0.10
3. Green and Bear Drainage	1.32	1.39	120	-0.06
4. Big Horn	1.93	1.80	121	0.13
5. Powder, Little Mo and Tongue Drainages	1.52	1.31	119	0.21
6. Belle Fourche Drainage	0.30	-0.03	80	0.33
7. Cheyenne Niobrara Drainage	0.12	-0.13	72	0.25
8. Lower Platte	1.05	0.76	102	0.30
9. Wind River	2.78	2.70	129	0.08
10. Upper Platte	0.94	0.80	98	0.13

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping