Friday, April 18, 2008

Midwest Earthquake - One Quake, Four Aftershocks

UPDATE: There has been a fifth aftershock, 4.5 intensity, at 15:14:16 UTC which could not be felt in Wilmette.
As of 9:31 AM on April 18, 2008 at the epicenter of the Midwest Earthquake, USGS data shows that there has been one 5.2 magnitude earthquake and four very small aftershocks, all of which are shown on the map above. The grey lines are the fault lines and the white lines are roads. The Illinois basin - Ozark dome area is considered to be an offshoot of the New Madrid fault. Here is a list of the quakes:
2.6 magnitude 2008/04/18 11:55:57 UTC
2.2 magnitude 2008/04/18 10:46:24 UTC
2.4 magnitude 2008/04/18 10:36:33 UTC
2.5 magnitude 2008/04/18 10:03:59 UTC
5.2 magnitude 2008/04/18 09:37:00 UTC

The BBC has an excellent interactive explanation of "How Earthquakes Happen," that will make you sound like an expert in less than 5 minutes of study!

We also have an earthquake report from two early risers in nearby Winnetka. One person was in the shower and felt nothing; the other felt the entire bed shake, and in her sleepy state thought that she was in the middle of a tornado!

WBBM Newsradio 780 online has updated information, live internet radio reports, and comments, and the Chicago Tribune and the Chicago Sun-Times both offer strong coverage .


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