Value Anomaly Rank Mean

Divisional Palmer Z-Index Rank (130 years)

October - December 1933

Driest⇣⅒⇣ ⅓Near Normal⇡ ⅓⇡⅒Wettest

Pennsylvania (Hover over a Climate Division)

Z-Index Palmer Z-Index : -0.55

Anomaly: -0.48

Rank: 39th Driest

Mean: -0.07

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**Insufficient variability in the data record renders rank insignificant

October - December 1933 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-0.71	-0.66	34	-0.05
2. East Central Mountains	-1.31	-1.29	22	-0.02
3. Southeastern Piedmont	-1.09	-1.06	29	-0.03
4. Lower Susquehanna	-0.71	-0.64	39	-0.07
5. Middle Susquehanna	-0.95	-0.87	32	-0.08
6. Upper Susquehanna	-0.47	-0.38	39	-0.09
7. Central Mountains	-0.50	-0.40	42	-0.10
8. South Central Mountains	-0.58	-0.48	41	-0.10
9. Southwest Plateau	-1.76	-1.74	16	-0.03
10. Northwest Plateau	-0.68	-0.63	32	-0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published August 2025, retrieved on August 15, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping