1-year (2013), 3-year (2011-2013), and 5-year (2009-2013) drought maps for the conterminous United States
|Authors:||Frank H. Koch, John W. Coulston.|
|Type:||General Technical Report|
|Station:||Southern Research Station|
|Source:||Potter, K.M., and B.L. Conkling, editors. 2015. Forest Health Monitoring: National Status, Trends and Analysis, 2014. General Technical Report SRS-209. Asheville, North Carolina: U.S. Department of Agriculture, Forest Service, Southern Research Station. 190 p.|
Doughts occur regularly in most U.S. forests, but their frequency and intensity vary widely between, as well as within, forest ecosystems (Hanson and Weltzin 2000). In the Western United States, forests commonly experience annual seasonal droughts. In the Eastern United States, forests tend to exhibit one of two prevailing drought patterns: random (i.e., occurring at any time of year), occasional droughts, as typically seen in the Appalachian Mountains and the Northeast; or frequent late-summer droughts, as typically seen in the southeastern Coastal Plain and the eastern edge of the Great Plains (Hanson and Weltzin 2000).