In 2017, Hurricane Maria ravaged the island of Puerto Rico, with category 5 winds topping out at 174 mph (282 km/h). In this mountainous nation with the 9th highest road density in the world, thousands of landslides wreaked havoc on the large number of rural communities that became cut off from supplies and travel. Dr. Stephen Hughes, a professor in the Department of Geology at the University of Puerto Rico Mayagüez, has turned this catastrophe into a lesson by harnessing before and after data to develop a landslide susceptibility map with resolution down to every 5 m. Join us as we discuss with him the process of developing landslide prediction across the entire island nation.