Value Anomaly Rank Mean

Divisional Palmer Z-Index

November 1950 - January 1951

-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 1950 - January 1951 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	0.66	0.69	97	-0.03
2. Willamette Valley	0.90	0.93	103	-0.03
3. Southwestern Valleys	0.33	0.39	84	-0.05
4. Northern Cascades	0.80	0.85	106	-0.05
5. High Plateau	1.47	1.52	113	-0.05
6. North Central	2.58	2.52	121	0.06
7. South Central	0.82	0.81	91	0.01
8. Northeast	0.28	0.15	74	0.13
9. Southeast	0.97	0.95	97	0.02

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on August 6, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping