February 10, 2010
[efoods]SYCAMORE ‚Äď An earthquake hit northern Illinois just before 4 a.m. Wednesday, waking up residents throughout DeKalb County.
The 3.8-magnitude earthquake happened at 3:59:34 a.m., according to the U.S. Geological Survey, and was about 3.1 miles underground.The quake was felt as far away as Madison, Wis., which is 134 miles away, according to the USGS.
The quake was centered about 1 mile south-southeast of Pingree Grove. The USGS initially had placed the epicenter 5 miles east of Sycamore and 4 miles west of Virgil.
The USGS originally said the quake was 4.3 in magnitude before downgrading it just before 8 a.m. Wednesday. Paul Stoddard, an associate professor in the department of Geology and Environmental Geosciences at Northern Illinois University, said the numbers are fluid during the first couple of hours after an earthquake.