Satellites like Landsat are valuable for mapping fire perimeters and for monitoring trends in burn severity or in post-fire recovery. Satellites can cover wide areas with a single pass, whereas helicopter, drone, or airplane fire line mapping can take hours. But civilian satellites with moderate resolution typically don't get imagery for the entire planet every day, and every day counts when large fires rage. On this episode of Eyes on Earth, we talk through a tool called RADR-Fire built to pull data from a wide variety of sources to map disaster impacts on a day-by-day basis. ECOSTRESS, a sensor on the International Space Station whose data are archived at the NASA’s EROS-based Land Processes Distributed Active Archive Center (LP DAAC), has been an especially useful source of information.