ValueRankAnomalyMean

Divisional Palmer Z-Index

August - October 1923

-4-3-2-11234

Oregon (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Rank:

Anomaly:

Mean:

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August - October 1923 Oregon Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Coastal Area	-0.95	36	-0.86	-0.09
2. Willamette Valley	-0.48	55	-0.42	-0.07
3. Southwestern Valleys	0.31	89	0.37	-0.06
4. Northern Cascades	0.16	78	0.21	-0.05
5. High Plateau	0.62	98	0.61	0.01
6. North Central	1.10	118	1.12	-0.02
7. South Central	2.10	127	2.05	0.05
8. Northeast	1.43	120	1.48	-0.06
9. Southeast	1.84	125	1.85	-0.01

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 17, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping