Value Anomaly Rank Mean

Divisional Palmer Z-Index

December 1973 - February 1974

-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

December 1973 - February 1974 Oregon Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Coastal Area	1.71	1.75	123	-0.04
2. Willamette Valley	2.04	2.09	126	-0.05
3. Southwestern Valleys	1.50	1.54	115	-0.03
4. Northern Cascades	1.56	1.63	123	-0.07
5. High Plateau	1.03	1.01	101	0.02
6. North Central	2.49	2.42	124	0.07
7. South Central	1.18	1.11	99	0.08
8. Northeast	1.71	1.59	119	0.11
9. Southeast	0.65	0.53	86	0.12

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 23, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping