ValueAnomalyRankMean

Divisional Palmer Z-Index Rank (130 years)

September - November 1989

Driest⇣⅒⇣ ⅓Near Normal⇡ ⅓⇡⅒Wettest

Oregon (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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September - November 1989 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	-1.31	-1.31	11	0.00
2. Willamette Valley	-1.35	-1.38	12	0.03
3. Southwestern Valleys	-0.82	-0.80	31	-0.02
4. Northern Cascades	-1.29	-1.31	11	0.02
5. High Plateau	-0.23	-0.24	57	0.02
6. North Central	-1.51	-1.57	11	0.07
7. South Central	-0.73	-0.80	32	0.07
8. Northeast	-0.82	-0.82	37	0.01
9. Southeast	-0.17	-0.15	62	-0.02

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on March 29, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping