An aftershock of magnitude 4.5 follows the 5.2 Illinois QuakeApril 18th, 2008 - 10:48 pm ICT by admin
Few minutes ago, the usgs website reported an aftershock of magnitude 4.5. This quake occurred at 10:14:16 AM (local time) today. According to the U.S. Geological Survey it had a magnitude of 4.5. It was located about 5 miles from the first quake this morning in West Salem, Ill.
This aftershock was felt by far more people compared to the original quake as most people in the region have woken up by now.
There were no immediate reports of injuries after the first quake.
As per wikipedia : An aftershock is an earthquake that occurs after a previous earthquake (the main shock). An aftershock is in the same region of the main shock (generally within a few rupture length) but is always of smaller magnitude. If an aftershock is larger than the main shock, the aftershock is redesignated as the main shock and the original main shock is redesignated as a foreshock.
Did you feel this aftershock? Let us know via comments.