Value Anomaly Rank Mean

Divisional Palmer Z-Index

September - November 1970

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-Index Palmer Z-Index : 1.20

Anomaly: 1.23

Rank: 24th Wettest

Mean: -0.03

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*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

September - November 1970 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	0.12	0.16	64	-0.04
2. East Central Mountains	0.75	0.77	91	-0.03
3. Southeastern Piedmont	0.00	0.04	62	-0.04
4. Lower Susquehanna	0.28	0.29	79	-0.02
5. Middle Susquehanna	0.65	0.69	94	-0.03
6. Upper Susquehanna	0.59	0.62	82	-0.03
7. Central Mountains	1.50	1.54	114	-0.04
8. South Central Mountains	1.38	1.43	107	-0.04
9. Southwest Plateau	0.96	0.99	99	-0.03
10. Northwest Plateau	2.37	2.38	122	-0.01

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on August 6, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping