Value Anomaly Rank Mean

Divisional Palmer Z-Index

February - April 1963

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-Index Palmer Z-Index : -0.99

Anomaly: -1.05

Rank: 23rd Driest

Mean: 0.05

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*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

February - April 1963 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 131 Years	1901-2000 Mean
1. Pocono Mountains	-1.34	-1.37	10	0.03
2. East Central Mountains	-1.30	-1.42	9	0.11
3. Southeastern Piedmont	-1.26	-1.32	15	0.07
4. Lower Susquehanna	-0.83	-0.87	30	0.04
5. Middle Susquehanna	-1.29	-1.40	14	0.12
6. Upper Susquehanna	-1.20	-1.23	16	0.03
7. Central Mountains	-1.18	-1.26	18	0.09
8. South Central Mountains	-0.52	-0.54	47	0.02
9. Southwest Plateau	0.17	0.17	78	0.00
10. Northwest Plateau	-0.91	-0.94	25	0.03

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 29, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping