ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1950

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Washington (Hover over a Climate Division)

Z-IndexPalmer Z-Index: 2.21

Anomaly: 2.29

Rank: 7th Wettest

Mean: -0.07

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October - December 1950 Washington Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. West Olympic Coast	1.40	1.43	119	-0.04
2. North East Olympic San Juan	1.41	1.36	93	0.05
3. Puget Sound Lowlands	1.80	1.89	119	-0.09
4. East Olympic Cascade Foothills	1.73	1.79	120	-0.06
5. Cascade Mountains West	1.87	1.93	123	-0.07
6. East Slope Cascades	2.59	2.63	127	-0.04
7. Okanogan Big Bend	2.65	2.71	127	-0.06
8. Central Basin	2.70	2.68	127	0.02
9. Northeastern	3.82	4.01	128	-0.19
10. Palouse Blue Mountains	2.55	2.53	124	0.02

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping