The first way many people likely found out about the 6.0-magnitude quake that shook Napa, Calif., on Sunday was through social media. Some users updated their statuses with exclamations of fear or relief, while others gave a bit more information with locations, photos, and videos.
Mapping software company Esri tracked these social media posts on Twitter and YouTube and created an interactive map that lets users get more of a personal view of what happened on the ground.
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In addition to the social media map, Esri also created another interactive map that shows demographic information about the people affected by the quake, along with seismic activity that was provided by the US Geological Survey.
Esri is known for creating public interest maps, especially is natural disasters. Earlier this summer, the company made a map that let users track Hurricane Arthur up the US Eastern seaboard and last August it created a map that showed the devastation of the Yosemite Rim Fire in California.
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