Commonly used drought index adapted for fire management applications, with a numerical range from 0 (no moisture deficiency) to 800 (maximum drought). Updated maps are online
United States Department of Agriculture USDA Forest Service, Forests and Rangelands, Glossary of Terms, National Fire Plan, Washington, D.C., USA 2012. http://www.forestsandrangelands.gov/resources/glos sary/a.shtml, (For Fr - Amer) {497}