Divisional Mapping

Divisional Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales. Data are available for bulk download.
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Divisional Palmer Z-Index Anomaly
October - December 1931
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Pennsylvania (Hover over a Climate Division)
Z-IndexPalmer Z-Index: -2.71
Rank: 5th Driest
Anomaly: -2.64
Mean: -0.07
October - December 1931 Pennsylvania Divisional Palmer Z-Index
Climate Division
Value
Rank
130 Years
Anomaly
1901-2000 Mean
1. Pocono Mountains-2.941-2.89-0.05
2. East Central Mountains-2.493-2.47-0.02
3. Southeastern Piedmont-2.257-2.21-0.03
4. Lower Susquehanna-3.073-3.00-0.07
5. Middle Susquehanna-3.282-3.20-0.08
6. Upper Susquehanna-3.043-2.96-0.09
7. Central Mountains-1.7616-1.66-0.10
8. South Central Mountains-2.438-2.33-0.10
9. Southwest Plateau-0.9130-0.88-0.03
10. Northwest Plateau-1.3515-1.30-0.04

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