Seismometer image captured from this morning's Midwest earthquake
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
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Seismometer image captured from this morning's Midwest earthquake (2008, April 18)
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