Seismometer image captured from this morning's Midwest earthquake

Apr 18, 2008
Seismometer image captured from this morning’s Midwest earthquake
A UW-Madison geology department seismometer in Weeks Hall recorded the tremors of an earthquake that shook Madison and many other areas of the Midwest this morning (April 18). Centered six miles from the town of West Salem in southern Illinois, the 4:40 a.m. quake had a magnitude of 5.2 and lasted for roughly a minute. It was followed by a sizable aftershock at 10:15 am that was also felt in Madison, according to UW-Madison geologists. Photo courtesy UW-Madison geology department

A University of Wisconsin-Madison geology department seismometer in Weeks Hall recorded the tremors of a southern Illinois earthquake that shook many areas of the Midwest this morning.

Centered six miles from the town of West Salem in southern Illinois, the 4:40 a.m. quake had a magnitude of 5.2 and lasted for roughly a minute.

It was followed by a sizable aftershock at 10:15 am that was also felt in Madison and Milwaukee, according to UW-Madison geologists.

Source: UW-Madison

Explore further: Puget Sound quake likely in Seattle Fault zone, geologists say

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