Value Anomaly Rank Mean

Divisional Palmer Z-Index Anomaly (1901-2000 mean)

August - October 1902

-7-5-3-11357

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

August - October 1902 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	-1.02	-0.93	35	-0.09
2. Willamette Valley	-0.90	-0.83	40	-0.07
3. Southwestern Valleys	-0.69	-0.63	41	-0.06
4. Northern Cascades	-0.94	-0.89	34	-0.05
5. High Plateau	-0.20	-0.21	61	0.01
6. North Central	-0.54	-0.52	46	-0.02
7. South Central	-0.11	-0.17	66	0.05
8. Northeast	-0.66	-0.60	42	-0.06
9. Southeast	-0.21	-0.20	64	-0.01

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping