ValueAnomalyRankMean

Divisional Palmer Z-Index Rank (130 years)

October - December 1986

Driest⇣⅒⇣ ⅓Near Normal⇡ ⅓⇡⅒Wettest

Oregon (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -1.28

Anomaly: -1.18

Rank: 27th Driest

Mean: -0.10

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October - December 1986 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	-1.22	-1.11	16	-0.11
2. Willamette Valley	-0.82	-0.74	31	-0.08
3. Southwestern Valleys	-1.32	-1.19	14	-0.13
4. Northern Cascades	-1.17	-1.08	20	-0.09
5. High Plateau	-1.66	-1.55	13	-0.11
6. North Central	-0.82	-0.83	41	0.01
7. South Central	-1.68	-1.66	10	-0.03
8. Northeast	-1.44	-1.47	23	0.03
9. Southeast	-1.96	-1.93	4	-0.03

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on March 27, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping