Estimates of area burned by large wildfires in the contiguous United States (CONUS), 1984–2012. A large wildfire is defined here as ≥ 405 ha in the Western US, ≥ 203 ha in the Eastern US. Estimates for 1984–2012 (bars) are based on large perimeters mapped as part of the Monitoring Trends in Burn Severity (MTBS) project (Eidenshink et al. 2007). An additional set of estimates for 1992–2012 (line) is based on records of wildfires > 405 ha included in the Fire Program Analysis Fire-Occurrence Database (Short 2014).