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
July - September 1931
-4-3-2-11234
Pennsylvania (Hover over a Climate Division)
Z-IndexPalmer Z-Index: -0.03
Rank: 63rd Driest
Anomaly: -0.08
Mean: 0.05
July - September 1931 Pennsylvania Divisional Palmer Z-Index
Climate Division
Value
Rank
130 Years
Anomaly
1901-2000 Mean
1. Pocono Mountains-0.1757-0.16-0.01
2. East Central Mountains-0.4647-0.480.03
3. Southeastern Piedmont0.55830.490.06
4. Lower Susquehanna0.36750.160.20
5. Middle Susquehanna-0.4945-0.590.10
6. Upper Susquehanna0.38730.280.10
7. Central Mountains0.06700.050.01
8. South Central Mountains0.50830.480.02
9. Southwest Plateau0.36760.37-0.01
10. Northwest Plateau-0.8740-0.880.00

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