ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1920

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Pennsylvania (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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October - December 1920 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	0.16	0.20	69	-0.05
2. East Central Mountains	0.51	0.53	80	-0.02
3. Southeastern Piedmont	-0.04	-0.01	58	-0.03
4. Lower Susquehanna	-0.09	-0.02	60	-0.07
5. Middle Susquehanna	0.42	0.49	77	-0.08
6. Upper Susquehanna	-0.19	-0.10	55	-0.09
7. Central Mountains	-0.29	-0.19	48	-0.10
8. South Central Mountains	-0.25	-0.15	57	-0.10
9. Southwest Plateau	-0.58	-0.56	38	-0.03
10. Northwest Plateau	-0.88	-0.84	23	-0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on June 25, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping