ValueAnomalyRankMean

Divisional Palmer Z-Index

September - November 1930

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -3.98

Anomaly: -3.95

Rank: Driest

Mean: -0.03

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September - November 1930 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-2.14	-2.10	8	-0.04
2. East Central Mountains	-2.83	-2.80	2	-0.03
3. Southeastern Piedmont	-2.70	-2.66	4	-0.04
4. Lower Susquehanna	-3.29	-3.28	1	-0.02
5. Middle Susquehanna	-3.79	-3.76	1	-0.03
6. Upper Susquehanna	-2.40	-2.37	6	-0.03
7. Central Mountains	-3.91	-3.87	2	-0.04
8. South Central Mountains	-3.92	-3.87	1	-0.04
9. Southwest Plateau	-3.76	-3.73	2	-0.03
10. Northwest Plateau	-3.31	-3.30	2	-0.01

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on April 5, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping