Value Anomaly Rank Mean

Divisional Palmer Z-Index

November 1938 - January 1939

-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

November 1938 - January 1939 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	-1.04	-1.02	23	-0.03
2. Willamette Valley	-1.06	-1.03	28	-0.03
3. Southwestern Valleys	-1.13	-1.07	31	-0.05
4. Northern Cascades	-0.65	-0.60	38	-0.05
5. High Plateau	-1.74	-1.68	17	-0.05
6. North Central	-2.44	-2.50	13	0.06
7. South Central	-1.51	-1.53	28	0.01
8. Northeast	-1.25	-1.38	29	0.13
9. Southeast	-0.71	-0.73	47	0.02

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 24, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping