Post-fire debris flows of 9 January 2018, Thomas Fire, southern California: initiation areas, precipitation and impacts

Multi‐Model Comparison of Computed Debris Flow Runout for the 9 January 2018 Montecito, California Post‐Wildfire Event

“…On 9 January 2018, a high-intensity rainfall event resulted in rainfall rates ranging from I 15 = 84 mm hr −1 to 99 mm hr −1 (Oakley et al, 2018). This storm produced debris flows throughout the western portion of the area burned by the Thomas Fire (Kean et al, 2019b;Lancaster et al, 2021;Lukashov et al, 2019), with the greatest impacts in Montecito (Kean et al, 2019b, and Figure 1). Debris flows originated in the Santa Ynez Mountains and ran out onto the urbanized area of coalesed alluvial fans.…”