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This paper presents an analysis of the Hooskanaden Landslide, an earthflow, which experienced a dramatic surge event beginning on February 24, 2019, closing US Highway 101 near mile point 343.5 for nearly 2 weeks. This ~ 1 km long surge event resulted in horizontal displacements of up to 45 m and uplift of 6 m at the toe located on a gravel beach adjacent to the Pacific Ocean. The Hooskanaden Landslide, likely active since the eighteenth century, exhibits regular activity with a recurrence interval of major surge events of approximately every 20 years, transitioning from slow to relatively rapid velocities. During the 2019 event, maximum displacement rates of approximately 60 cm/h were observed, slowly decreasing to 15 cm/h for a sustained period of approximately 2 weeks before the eventual return to baseline conditions (

On 20 May, a destructive landslide, later coined Arleen's Slide, occurred in California's iconic Big Sur region, completely burying more than half a kilometer of State Highway 1 ([ 1 ][1], [ 2 ][2]). In the 4 previous months, more than 150 cm of winter rain in Big Sur alone ([ 2 ][2]) saturated