Value Anomaly Rank Mean

Divisional Palmer Z-Index

December 1980 - February 1981

-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 1980 - February 1981 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	-0.81	-0.77	39	-0.04
2. Willamette Valley	-0.61	-0.56	43	-0.05
3. Southwestern Valleys	-1.28	-1.25	22	-0.04
4. Northern Cascades	-0.32	-0.25	57	-0.07
5. High Plateau	-0.55	-0.57	53	0.02
6. North Central	0.27	0.20	70	0.07
7. South Central	-0.70	-0.78	46	0.08
8. Northeast	0.15	0.04	65	0.11
9. Southeast	-0.22	-0.34	56	0.12

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on August 4, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping