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The following is a list of earthquakes in Illinois. Earthquakes. Date Area Epicenter Mag. ... Miscellaneous Field Studies Map 1143. United States Geological Survey. ...
The first recorded earthquake in Illinois is from 1795 when a small earthquake shook the frontier settlement of Kaskaskia, although the epicenter could not be located and may have been outside Illinois. [6] Data from large earthquakes—in May and July 1909, and November 1968—suggest that earthquakes in the area are of moderate magnitude but ...
Locations of quakes magnitude 2.5 or greater in the Wabash Valley (upper right) and New Madrid (lower left) Seismic Zones. The Wabash Valley seismic zone (also known as the Wabash Valley fault system or fault zone) is a tectonic region located in the Midwestern United States, centered on the valley of the lower Wabash River, along the state line between southeastern Illinois and southwestern ...
The color-coded map shows a range of earthquake probability across the U.S. Well known high-risk areas, such as California and Alaska, are coded in dark red, denoting the highest risk.
Earthquakes in the New Madrid and Wabash Valley seismic zones from 1974 to 2002, with magnitudes larger than 2.5. The zone had four of the largest earthquakes in recorded North American history, with moment magnitudes estimated to be as large as 7 or greater, all occurring within a 3-month period between December 1811 and February 1812. Many of ...
1983 Borah Peak earthquake Illinois: 5.3 November 9, 1968 1968 Illinois earthquake Indiana: 5.1 September 27, 1909 1909 Wabash River earthquake Iowa: 5.0–5.1 November 12, 1934 [45] Kansas: 5.1 April 24, 1867 1867 Manhattan, Kansas earthquake Kentucky: 7.6–7.9 December 16, 1811 1811–1812 New Madrid earthquakes Louisiana: 4.2 M L: October ...
“Instead of allowing this event to scare you, use this real world event to help you review and update your family emergency plan,” public safety official said.
Isoseismal map for the 1968 Illinois earthquake. In seismology, an isoseismal map is used to show countour lines of equally felt seismic intensity, generally measured on the Modified Mercalli scale. Such maps help to identify earthquake epicenters, particularly where no instrumental records exist, such as for historical earthquakes.