ValueRankAnomalyMean

Divisional Palmer Z-Index

November 1976 - January 1977

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -1.78

Rank: 8th Driest

Anomaly: -1.79

Mean: 0.01

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November 1976 - January 1977 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Pocono Mountains	-1.77	4	-1.73	-0.04
2. East Central Mountains	-1.81	6	-1.81	0.00
3. Southeastern Piedmont	-1.60	12	-1.58	-0.03
4. Lower Susquehanna	-1.50	17	-1.51	0.01
5. Middle Susquehanna	-1.70	9	-1.73	0.03
6. Upper Susquehanna	-1.47	10	-1.46	-0.02
7. Central Mountains	-1.59	8	-1.61	0.02
8. South Central Mountains	-1.26	19	-1.28	0.02
9. Southwest Plateau	-1.35	11	-1.42	0.07
10. Northwest Plateau	-1.53	8	-1.58	0.05

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 14, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping