ValueRankAnomalyMean

Divisional Palmer Z-Index

August - October 1931

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Rank:

Anomaly:

Mean:

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August - October 1931 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Pocono Mountains	-1.67	10	-1.72	0.04
2. East Central Mountains	-1.37	16	-1.46	0.09
3. Southeastern Piedmont	-0.51	46	-0.61	0.10
4. Lower Susquehanna	-1.01	28	-1.12	0.11
5. Middle Susquehanna	-1.56	11	-1.66	0.10
6. Upper Susquehanna	-1.52	15	-1.60	0.08
7. Central Mountains	-1.01	34	-1.05	0.04
8. South Central Mountains	-0.46	51	-0.47	0.01
9. Southwest Plateau	0.19	69	0.18	0.02
10. Northwest Plateau	-1.58	17	-1.61	0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 16, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping