The Ohio Seismic Network (OhioSeis) consists of 26 cooperative, volunteer-operated seismic stations at colleges, universities, and other institutions across the state. The Division of Geological Survey of the Ohio Department of Natural Resources, in cooperation with the Ohio Emergency Management Agency, coordinates the network from the Ohio Earthquake Information Center at the Division’s laboratory facilities at Alum Creek State Park near Delaware, Ohio. This facility also hosts U.S. Geological Survey Advanced National Seismic System (ANSS) station ACSO, in addition to Ohio Seismic Network seismic-monitoring instruments. Displays pertaining to Ohio earthquakes and other aspects of Ohio geology are open to the public during normal business hours.
 

Go to Live OhioSeis Helicorder Displays

New! Helicorder Displays   See the last 24 hours of ground motion at OhioSeis stations. Updates each minute in near-real time. YES? Please report it here. Contacts for the Ohio Seismic Network

USGS Live Internet Seismic Server
Last 24-hours of ground motion at station ACSO,
Alum Creek State Park, Delaware County, Ohio.

Recent Ohio/Regional Earthquakes

• Youngstown, Mahoning County, January 13, 2012
• Youngstown, Mahoning County, December 31, 2011
• Youngstown, Mahoning County, December 24, 2011
• Youngstown, Mahoning County, November 25, 2011
• Youngstown, Mahoning County, October 20, 2011
• Youngstown, Mahoning County, September 30, 2011
• Youngstown, Mahoning County, September 26, 2011
• Marietta, Washington County, September 04, 2011
• Youngstown, Mahoning County, September 02, 2011
• Marietta, Washington County, August 31, 2011
• Marietta, Washington County, August 31, 2011
• Youngstown, Mahoning County, August 25, 2011
• Virginia Earthquake, August 23, 2011
• Youngstown, Mahoning County, August 22, 2011
• Offshore Lake Erie, Ohio-Canada Border Region, August 13, 2011
• Offshore Lake Erie (Cuyahoga County, Ohio), June 15, 2011
• Medina County, Ohio, June 5, 2011
• Delaware Township, Hancock County, April 26, 2011
• Youngstown, Mahoning County, March 17, 2011 (10:53)
• Youngstown, Mahoning County, March 17, 2011 (10:42)

Archive of Recent Ohio Regional Earthquakes 
 

Ohio Earthquake Information

• Catalog of Ohio Earthquakes
  
• Frequently Asked Questions About Ohio Earthquakes
• Earthquakes in Ohio (Educational Leaflet No. 9, 618 KB PDF*)
• Search for Ancient Earthquakes (Ohio Geology Newsletter Fall 1994 1.6 MB PDF)
• Interactive map of earthquake epicenters in Ohio
• Map of earthquake epicenters in Ohio (General)
• Map of earthquake epicenters in Ohio (Detailed)
• Map of deep structures in Ohio
• Seismic Intensity Scales
• Earthquake hazard/risk in Ohio

 
Ohio Seismic Network

• About OhioSeis
  
• The Ohio Seismic Network--2003, Seismological Research Letters [1.98 KB pdf]
• Ohio Earthquake Information Center
• Station location map with station information
• OhioSeis station data
• How to view OhioSeis waveform data.
• Research

 
Links to Earthquake Information

• U.S. Geological Survey earthquake bulletin with detailed maps
  
• IRIS Seismic Monitor - interactive display of global seismicity