Mapping Earthquake Intensity By East Coast Zip Codes

By Matt Stiles | | Topics: Uncategorized

Early tonight the USGS released data summarizing Americans’ responses to today’s earthquake by ZIP code. The agency uses a complicated formula that’s different from the commonly known Richter magnitude scale, but basically the data show how people experienced the event.

Here’s a quick map I made in ArcGIS of the states closest to the epicenter. Darker hot colors represent greater magnitude: 

Here’s a view of DC. My ZIP code, at the top right of the DC diamond, apparently received the most dramatic responses. All I noticed at home was a toppled bobblehead doll (though that could easily be attributed to one of our cats, I suppose). 

Download data | Idea via PBS

Mapping 2011 Earthquakes

By Matt Stiles | | Topics: Uncategorized

This 2011 earthquakes map, rendered in Google Earth, shows just how rare seismic events are on the East Coast: 

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UPDATE: Adding historical data I discover…

This map shows earthquake hazards in various parts of the country: 

The resulting maps are derived from seismic hazard curves calculated on a grid of sites across the United States that describe the frequency of exceeding a set of ground motions.

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This map uses symbols and colors to visualize the “seismicity” of the lower 48 states:  

Source: USGS