ValueRankAnomalyMean

Divisional Palmer Z-Index

December 1917 - February 1918

-4-3-2-11234

Oregon (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Rank:

Anomaly:

Mean:

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December 1917 - February 1918 Oregon Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Coastal Area	1.01	111	1.06	-0.04
2. Willamette Valley	1.95	124	2.00	-0.05
3. Southwestern Valleys	-0.18	67	-0.14	-0.04
4. Northern Cascades	1.40	120	1.47	-0.07
5. High Plateau	-0.58	50	-0.61	0.02
6. North Central	2.02	117	1.95	0.07
7. South Central	-0.82	41	-0.90	0.08
8. Northeast	2.56	127	2.44	0.11
9. Southeast	-0.73	43	-0.85	0.12

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 12, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping