2010 Indiana earthquake

2010 Indiana earthquake

Map of the maximum intensity in the surrounding counties with a star as the epicenter.
Date 12:55:21, December 30, 2010 (2010-12-30T12:55:21)
Magnitude 3.8
Depth 3 mi (4.83 km)
Epicenter 40°25′37″N 85°53′17″W / 40.427°N 85.888°W / 40.427; -85.888Coordinates: 40°25′37″N 85°53′17″W / 40.427°N 85.888°W / 40.427; -85.888
Areas affected United States
Max. intensity V (Moderate, Mercalli)
Tsunami None
Landslides None

The 2010 Indiana earthquake registered 3.8 on the moment magnitude scale and struck near Greentown and Kokomo on December 30, 2010 at 12:55:21 UTC at a depth of 3 mi.[1][2] The quake occurred approximately 50 miles north of Indiana's capital, Indianapolis.[1] It joins only three other earthquakes that have affected the northern Indiana area since 1999.[3] The “extremely rare and unprecedented” earthquake had the largest magnitude of a northern Indiana earthquake in 175 years.[4] Despite being considered a rare occurrence, the affected region of northern Indiana lies near many fault lines including the Wabash Valley Seismic Zone and the New Madrid Seismic Zone.[5][6] Both zones are hotspots for tectonic activity, with the Wabash Valley Fault Zone reaching earthquake depths up to 18 km (11.4 mi.) deep.[7] It was incorrectly recorded by nearby stations as a 4.2 magnitude before being downgraded to 3.8.[8] No significant damages were reported from the incident, but the quake was felt by thousands, spanning across multiple cities and states.[9] Towns as far away as Kalamazoo, Michigan and states as far as Wisconsin and Kentucky reported the earthquake.[10][11]


  1. 1 2 "Magnitude 3.8 - INDIANA". USGS. Retrieved May 13, 2011.
  2. Silverleib, Alan (December 30, 2010). "Indiana earthquake: a 'very loud boom'". CNN. Retrieved December 12, 2012.
  3. Guarino, Mark. "Illinois earthquake third to rattle upper Midwest since 1999". Christian Science Monitor. ISSN 0882-7729. Retrieved 2016-02-02.
  4. Mark Guarino (December 30, 2010). "Indiana earthquake 'extremely rare and unprecedented'". The Christian Science Monitor. Retrieved May 14, 2011.
  5. Blake, Brian. "Wabash Valley Seismic Zone". www.cusec.org. Retrieved 2016-02-02.
  6. Blake, Brian. "New Madrid Seismic Zone". www.cusec.org. Retrieved 2016-02-02.
  7. Kim, WY (October 2003). "The 18 June 2002 Caborn, Indiana, earthquake: Reactivation of ancient rift in the Wabash Valley seismic zone?". Web of Science. Retrieved February 1, 2016.
  8. "Indiana earthquake downgraded to 3.8 on Richter scale". Catholic Online. December 30, 2010. Retrieved December 12, 2012.
  9. "Small quake a boon for geologists -- Daily Herald". prev.dailyherald.com. Retrieved 2016-02-02.
  10. Fusciardi, Chris (December 30, 2010). "Indiana earthquake 'absolutely unmistakable' to some Southwest Michigan residents". Michigan Live. Retrieved December 12, 2012.
  11. Mary Collins; Nicole Hahn; John W. Davis (December 30, 2010). "Did You Feel That Earthquake?". Indiana News Center. Retrieved December 12, 2012.

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