Authors: Tony K. Wolf and John D. Boyer, Professor of Viticulture and Lecturer, Virginia Tech
Publication Number 463-020, December 2003
Figure 8. Palmer Drought Severity (PDS) indices for Virginia's northern (division #4) climatic division from 1985 through 2002. Negative values denote dry periods whereas positive values denote wet conditions. See text for a more specific interpretation of the values.
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