ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1949

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Pennsylvania (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -2.20

Anomaly: -2.13

Rank: 12th Driest

Mean: -0.07

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October - December 1949 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-1.61	-1.56	12	-0.05
2. East Central Mountains	-1.55	-1.53	16	-0.02
3. Southeastern Piedmont	-1.93	-1.89	12	-0.03
4. Lower Susquehanna	-1.05	-0.98	32	-0.07
5. Middle Susquehanna	-1.46	-1.39	22	-0.08
6. Upper Susquehanna	-1.95	-1.86	10	-0.09
7. Central Mountains	-2.13	-2.03	8	-0.10
8. South Central Mountains	-0.93	-0.83	31	-0.10
9. Southwest Plateau	-1.95	-1.93	12	-0.03
10. Northwest Plateau	-2.29	-2.24	7	-0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on June 18, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping