Value Anomaly Rank Mean

Divisional Palmer Z-Index Rank (130 years)

December 1947 - February 1948

Driest⇣⅒⇣ ⅓Near Normal⇡ ⅓⇡⅒Wettest

Pennsylvania (Hover over a Climate Division)

Z-Index Palmer Z-Index : --

Anomaly: --

Rank: -- Driest

Mean: --

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*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

December 1947 - February 1948 Pennsylvania Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Pocono Mountains	-0.86	-0.92	19	0.06
2. East Central Mountains	-0.85	-0.99	20	0.14
3. Southeastern Piedmont	-0.28	-0.40	50	0.12
4. Lower Susquehanna	-0.66	-0.77	32	0.11
5. Middle Susquehanna	-0.95	-1.09	19	0.14
6. Upper Susquehanna	-0.65	-0.68	32	0.02
7. Central Mountains	-0.53	-0.62	28	0.09
8. South Central Mountains	-1.03	-1.11	14	0.08
9. Southwest Plateau	-0.79	-0.90	19	0.11
10. Northwest Plateau	-0.69	-0.76	27	0.07

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published August 2025, retrieved on August 23, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping