Abstract
The primary purpose of this study is to examine the spatial evolution of meteorological drought severity within the contiguous United States during the first six months of an average drought event. Drought events occurring during the period January 1895 to April 1989 were identified based on the drought history of the Northwest South Carolina (NWSC) climatic division. Values of the Palmer Drought Severity Index (PDSI) corresponding to each drought event were collected and averaged to produce cold and warm season time series of average drought severity for each climatic division. Although the results indicate that droughts associated with this region are widespread in both the cold and warm seasons, the nationwide patterns of average drought severity are clearly different for the two examples. For the cold season there is a northwest to southeast alignment of drought conditions, with a node of maximum drought severity located in the north central Great Plains, and another in the southeast. For the warm sea...
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