Figure 5

Scatterplot of live fuel moisture (LFM) versus Keetch-Byram Drought Index (KBDI) for the full dataset. The dashed line delineates the 100% LFM trigger point, below which individual tree torching becomes common during moderate-intensity fires. The solid horizontal line delineates the 80% LFM trigger point, below which the likelihood of independent crown fire becomes substantial. The vertical line marks the KBDI (526) above which LFM becomes negatively associated with KBDI for the study area, as identified by piecewise regression.