Chicago earthquake? Quarry blast causes 3.7 magnitude shaking

November 4, 2013 (CHICAGO)

The US Geological Survey originally reported it as a 3.7 magnitude earthquake with an epicenter of Indian Head Park, but has since changed the website to say it was a quarry blast in nearby Countryside Hills.

Residents in the west suburbs felt the shaking around 12:35 p.m. The tremors were classified as "light to weak" according to the shake map.

Check out the USGS ShakeMap.

No damage or injuries have been reported.

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