Mahoning County, December 31, 2011
Origin Time: 31 December, 2011, 20:04:59.01 UTC
Location: 41.11 North 80.69 West
Magnitude: 4.0 mbLg
Depth: 3.68 km
Seismogram of the December 31 earthquake recorded at Alum Creek State Park.
A 4.0 magnitude earthquake centered at Youngstown rocked northeastern Ohio just before 3:05 p.m. EST on New Year’s Eve. This was the 11th earthquake in a sequence that began on March 17, 2011 at Youngstown. The December 31 earthquake was felt throughout northeastern Ohio, adjacent areas in western Pennsylvania, and in Ontario, Canada. Media reports indicate that damage was minor from this event with a few reports of cracked plaster and glassware falling from shelves. Earthquakes in the low 4 magnitude range would not be expected to cause major damage. More than 4,700 felt reports have been submitted by individuals to the U.S. Geological Survey’s Did You Feel It Web site. Individuals who felt this event are encouraged to submit a report or email: firstname.lastname@example.org. Please include a description of what you felt and your street address in your email message.
This earthquake was recorded by seismic stations of the Ohio Seismic Network throughout Ohio and by portable seismometers in the epicentral area.