Mexico City is sinking faster than ever, new NASA data reveals
Long recognized as one of the fastest-sinking sites in the world, today’s Mexico City is sinking by nearly 10 inches (about 25 centimeters) a year, and has sunk by nearly 40 feet over the past century. This information comes from newly available satellite data released by NASA last week that was derived from the U.S.-India satellite project known as NISAR. NISAR uses advanced radar imaging — effectively a microscope in space — to measure changes in Earth’s land, ice, sea level rise and groundwater. This satellite image from NASA shows how its NISAR technology can identify areas of the Valley of Mexico with significant subsidence, such as those shown in blue here that sank by more than one centimeter per month between Oct. 25, 2025, and Jan. 17, 2026. (NASA/JPL-Caltech/David Bekaert) It has long been observed that Mexico City has been sinking (a 1995 study by the National Academies of Sciences, Engineering and Medicine found the city was sinking roughly two inches per year by t...