Value Anomaly Rank Mean

Divisional Palmer Z-Index

November 1957 - January 1958

-4-3-2-11234

Oregon (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 1957 - January 1958 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	0.03	0.06	73	-0.03
2. Willamette Valley	0.37	0.40	81	-0.03
3. Southwestern Valleys	0.84	0.89	105	-0.05
4. Northern Cascades	0.54	0.59	96	-0.05
5. High Plateau	1.02	1.07	102	-0.05
6. North Central	0.37	0.32	78	0.06
7. South Central	1.29	1.28	103	0.01
8. Northeast	0.99	0.86	89	0.13
9. Southeast	0.00	-0.02	72	0.02

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on August 2, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping