ValueAnomalyRankMean

Divisional Palmer Z-Index

September - November 1991

-4-3-2-11234

Washington (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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September - November 1991 Washington Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. West Olympic Coast	-1.32	-1.35	14	0.02
2. North East Olympic San Juan	-1.26	-1.33	22	0.07
3. Puget Sound Lowlands	-1.72	-1.67	15	-0.05
4. East Olympic Cascade Foothills	-1.08	-1.07	24	-0.01
5. Cascade Mountains West	-0.94	-0.95	29	0.00
6. East Slope Cascades	-0.87	-0.91	30	0.04
7. Okanogan Big Bend	-0.53	-0.51	41	-0.02
8. Central Basin	-0.09	-0.14	61	0.05
9. Northeastern	-1.04	-0.98	26	-0.06
10. Palouse Blue Mountains	-0.52	-0.59	42	0.06

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published April 2025, retrieved on April 10, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping