Quarry Blast Triggered Tremors Across Western Suburbs

Around 12:30 pm CST, numerous reports of a possible earthquake were received by the National Weather Service.  According to the USGS National Earthquake Information Center website, the source of the tremors was from a quarry blast in Countryside, Illinois. The quarry blast did register 3.7 magnitude on the Richter Scale.

The link to the USGS National Earthquake Information Center webpage on this event is at: http://earthquake.usgs.gov/earthquakes/eventpage/usb000ksfx#summary



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