Value Anomaly Rank Mean

Divisional Palmer Z-Index

December 1984 - February 1985

-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

December 1984 - February 1985 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	-2.49	-2.45	4	-0.04
2. Willamette Valley	-2.29	-2.24	5	-0.05
3. Southwestern Valleys	-2.40	-2.37	3	-0.04
4. Northern Cascades	-1.38	-1.31	16	-0.07
5. High Plateau	-1.89	-1.91	11	0.02
6. North Central	-0.06	-0.13	64	0.07
7. South Central	-0.08	-0.16	62	0.08
8. Northeast	-0.61	-0.72	40	0.11
9. Southeast	-0.99	-1.11	35	0.12

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 22, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping