Western Spruce Budworm Outbreak in Targhee and Caribou National Forests, ID

ForWarn has detected apparent decline in vegetation greenness in August 2015. The data shows characteristics of western spruce budworm population outbreak, which lasts about 10-15 years. The species is known to be a defoliator of coniferous forests and is affecting the amount of foliage in Targhee and Caribou National Forest, Idaho.