ValueAnomalyRankMean

Divisional Palmer Z-Index

September - November 1917

-4-3-2-11234

Pennsylvania (Hover over a Climate Division)

Z-IndexPalmer Z-Index: 0.85

Anomaly: 0.88

Rank: 36th Wettest

Mean: -0.03

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September - November 1917 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-0.32	-0.28	51	-0.04
2. East Central Mountains	-0.09	-0.06	58	-0.03
3. Southeastern Piedmont	0.68	0.72	85	-0.04
4. Lower Susquehanna	1.35	1.37	106	-0.02
5. Middle Susquehanna	0.97	1.00	100	-0.03
6. Upper Susquehanna	0.42	0.45	73	-0.03
7. Central Mountains	0.82	0.86	98	-0.04
8. South Central Mountains	0.38	0.42	83	-0.04
9. Southwest Plateau	0.69	0.72	89	-0.03
10. Northwest Plateau	1.38	1.39	109	-0.01

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on April 5, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping