Value Anomaly Rank Mean

Divisional Palmer Z-Index

November 1966 - January 1967

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-Index Palmer Z-Index : -0.81

Anomaly: -0.82

Rank: 30th Driest

Mean: 0.01

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*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

November 1966 - January 1967 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-0.69	-0.65	36	-0.04
2. East Central Mountains	-0.70	-0.70	35	0.00
3. Southeastern Piedmont	-0.48	-0.45	44	-0.03
4. Lower Susquehanna	-0.40	-0.41	49	0.01
5. Middle Susquehanna	-0.59	-0.62	39	0.03
6. Upper Susquehanna	-0.68	-0.66	41	-0.02
7. Central Mountains	-0.61	-0.64	34	0.02
8. South Central Mountains	-1.19	-1.21	23	0.02
9. Southwest Plateau	-1.25	-1.32	15	0.07
10. Northwest Plateau	-0.38	-0.43	42	0.05

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published August 2025, retrieved on August 21, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping