Value Anomaly Rank Mean

Divisional Palmer Z-Index

December 1904 - February 1905

-4-3-2-11234

Oregon (Hover over a Climate Division)

Z-Index Palmer Z-Index : --

Anomaly: --

Rank: -- Driest

Mean: --

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**Insufficient variability in the data record renders rank insignificant

December 1904 - February 1905 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	-1.33	-1.29	20	-0.04
2. Willamette Valley	-1.40	-1.35	23	-0.05
3. Southwestern Valleys	-1.29	-1.26	21	-0.03
4. Northern Cascades	-1.33	-1.26	18	-0.07
5. High Plateau	-0.87	-0.89	36	0.02
6. North Central	-1.30	-1.37	21	0.07
7. South Central	-0.81	-0.88	42	0.08
8. Northeast	-1.25	-1.36	18	0.11
9. Southeast	-0.27	-0.39	55	0.12

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published August 2025, retrieved on August 11, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping