Value Anomaly Rank Mean

Divisional Palmer Z-Index

November 1984 - January 1985

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-Index Palmer Z-Index : -0.38

Anomaly: -0.39

Rank: 48th Driest

Mean: 0.01

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*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

November 1984 - January 1985 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-1.30	-1.26	14	-0.04
2. East Central Mountains	-1.46	-1.46	12	0.00
3. Southeastern Piedmont	-1.48	-1.45	14	-0.03
4. Lower Susquehanna	-0.75	-0.76	35	0.01
5. Middle Susquehanna	-0.58	-0.61	42	0.03
6. Upper Susquehanna	-0.45	-0.44	46	-0.02
7. Central Mountains	0.20	0.17	73	0.02
8. South Central Mountains	-0.05	-0.07	60	0.02
9. Southwest Plateau	0.33	0.26	74	0.07
10. Northwest Plateau	0.50	0.45	83	0.05

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on August 2, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping