Value Anomaly Rank Mean

Divisional Palmer Z-Index

August - October 1939

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-Index Palmer Z-Index : --

Anomaly: --

Rank: -- Driest

Mean: --

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**Insufficient variability in the data record renders rank insignificant

August - October 1939 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-0.81	-0.85	36	0.04
2. East Central Mountains	-1.14	-1.24	28	0.09
3. Southeastern Piedmont	0.05	-0.05	67	0.10
4. Lower Susquehanna	-0.42	-0.53	48	0.11
5. Middle Susquehanna	-1.06	-1.17	24	0.10
6. Upper Susquehanna	-0.81	-0.89	31	0.08
7. Central Mountains	-1.08	-1.12	30	0.04
8. South Central Mountains	-1.07	-1.08	24	0.01
9. Southwest Plateau	-1.81	-1.83	11	0.02
10. Northwest Plateau	-0.94	-0.97	34	0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on August 2, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping