Basaltic eruptions can produce voluminous lava flows which cover large areas and pose a hazard to infrastructure and private property (Jenkins et al., 2017;Neal et al., 2019). Forecasting the direction and velocity of lava flows is essential for properly mitigating volcanic hazard (Chevrel et al., 2021;Dietterich et al., 2015;Fujita et al., 2009). Accurate prediction of flow direction and velocity is challenging because lava flows are sensitive to initial eruption conditions, interactions with the surrounding terrain and environment, and changes in the lava properties (