Value Anomaly Rank Mean

Divisional Palmer Z-Index

October - December 1984

-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

October - December 1984 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	1.03	1.14	111	-0.11
2. Willamette Valley	1.31	1.39	115	-0.08
3. Southwestern Valleys	1.31	1.44	116	-0.13
4. Northern Cascades	1.46	1.55	122	-0.09
5. High Plateau	1.80	1.91	118	-0.11
6. North Central	1.87	1.87	120	0.01
7. South Central	2.43	2.45	127	-0.03
8. Northeast	2.27	2.24	127	0.03
9. Southeast	1.26	1.29	113	-0.03

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on August 3, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping