ValueRankAnomalyMean

Divisional Palmer Z-Index

December 1988 - February 1989

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Rank:

Anomaly:

Mean:

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December 1988 - February 1989 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Pocono Mountains	-1.79	2	-1.85	0.06
2. East Central Mountains	-1.63	3	-1.77	0.14
3. Southeastern Piedmont	-1.08	13	-1.20	0.12
4. Lower Susquehanna	-1.19	11	-1.30	0.11
5. Middle Susquehanna	-1.31	7	-1.45	0.14
6. Upper Susquehanna	-1.66	4	-1.68	0.02
7. Central Mountains	-1.06	14	-1.15	0.09
8. South Central Mountains	-0.58	31	-0.66	0.08
9. Southwest Plateau	0.05	59	-0.06	0.11
10. Northwest Plateau	-0.89	19	-0.95	0.07

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 16, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping