Value Anomaly Rank Mean

Divisional Palmer Z-Index

July - September 1929

-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

July - September 1929 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-1.49	-1.47	18	-0.01
2. East Central Mountains	-0.73	-0.76	39	0.03
3. Southeastern Piedmont	-0.55	-0.61	49	0.06
4. Lower Susquehanna	-0.84	-1.04	34	0.20
5. Middle Susquehanna	-1.24	-1.34	24	0.10
6. Upper Susquehanna	-1.37	-1.47	19	0.10
7. Central Mountains	-1.33	-1.34	26	0.01
8. South Central Mountains	-1.77	-1.79	12	0.02
9. Southwest Plateau	-0.81	-0.79	38	-0.01
10. Northwest Plateau	-0.74	-0.74	46	0.00

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on August 3, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping