ValueAnomalyRankMean

Divisional Palmer Z-Index

September - November 1906

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -0.33

Anomaly: -0.29

Rank: 52nd Driest

Mean: -0.03

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September - November 1906 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-0.74	-0.70	39	-0.04
2. East Central Mountains	0.04	0.07	64	-0.03
3. Southeastern Piedmont	0.27	0.30	72	-0.04
4. Lower Susquehanna	-0.08	-0.06	62	-0.02
5. Middle Susquehanna	-0.49	-0.46	42	-0.03
6. Upper Susquehanna	-0.43	-0.40	46	-0.03
7. Central Mountains	-0.84	-0.80	34	-0.04
8. South Central Mountains	-1.17	-1.12	29	-0.04
9. Southwest Plateau	-0.40	-0.37	48	-0.03
10. Northwest Plateau	0.16	0.18	70	-0.01

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on March 27, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping