We examined the correlation between fire activity and weather records for a 15-year period and a number of National Forests located in Oregon and California. Correlations between burned area and personnel usage, and fire weather indices of the National Fire Danger Rating System were weak. But time periods for which the fire weather indices showed extreme values also have a considerably larger proportion of extreme fire activity. In this sense, the indices can serve as predictors of extreme fire acitvity. This holds true in areas of widely divergent climates and differing fuel types. The joint influence of time-clustering of fires and extreme fire conditions, as reflected by the burning index, is also quantified. West. J. Appl. For. 4(2):46-48, April 1989.
Document Type: Journal Article
Pacific Southwest Forest and Range Experiment Station, USDA Forest Service, Riverside, CA 92507
Publication date: April 1, 1989
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Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.