On 24 August 2014 (03:20 local time), a magnitude 6.0 earthquake struck the Napa Valley, California, just south of the city of Napa (population 77,000). This is the first earthquake for which the surface deformation has been measured by ESA’s Sentinel-1 satellite.

Article Published in EOS. Read more below and see also the related articles by BBC News and the European Space Agency (ESA).