List of earthquakes in Illinois

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The following is a list of earthquakes in Illinois.

Contents

Earthquakes

DateAreaEpicenter Mag. MMI Depth
(km)		DeathsInjuriesTotal damage / notesSource
April 18, 2008 Wabash County 38°27′N87°53′W / 38.45°N 87.89°W / 38.45; -87.89 5.4 Mw VII11.62Limited / strike-slip (left lateral)
June 10, 1987 Richland County 38°42′47″N87°57′14″W / 38.713°N 87.954°W / 38.713; -87.954 5.0 Mw VI10 [1]
September 15, 1972 Lee County 41°38′42″N89°22′08″W / 41.645°N 89.369°W / 41.645; -89.369 4.0 Mw VI6 [2]
November 9, 1968 Hamilton County 37°57′N88°29′W / 37.95°N 88.48°W / 37.95; -88.48 5.4 Mw VII25Limited / dip-slip (reverse)
April 9, 1917 Randolph County 38°06′N90°12′W / 38.1°N 90.2°W / 38.1; -90.2 5.1 Mfa VII [3]
May 26, 1909 Kane County 41°36′N88°06′W / 41.6°N 88.1°W / 41.6; -88.1 5.1 Mfa VII [4]
October 31, 1895 Mississippi County, MO 37°00′N89°24′W / 37.0°N 89.4°W / 37.0; -89.4 5.9 Mfa VIIIDamage at Cairo, Illinois [5]
September 27, 1891 Hamilton County 38°15′N88°30′W / 38.25°N 88.5°W / 38.25; -88.5 5.2 Mfa VII [4]
June 9, 1838 Marion County 38°30′N89°00′W / 38.5°N 89.0°W / 38.5; -89.0 5.2 Mfa VII [2]
The inclusion criteria for adding events are based on WikiProject Earthquakes' notability guideline that was developed for stand alone articles. The principles described are also applicable to lists. In summary, only damaging, injurious, or deadly events should be recorded.

See also

Notes

  1. ↑ Stover & Coffman 1993 , pp. 224, 228, 229
  2. 1 2 Stover & Coffman 1993 , p. 224
  3. ↑ Stover & Coffman 1993 , pp. 224, 226, 227
  4. 1 2 Stover & Coffman 1993 , pp. 224–225
  5. ↑ Stover & Coffman 1993 , pp. 262, 263

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The Modified Mercalli intensity scale measures the effects of an earthquake at a given location. This is in contrast with the seismic magnitude usually reported for an earthquake.

<span class="mw-page-title-main">New Madrid Seismic Zone</span> Major seismic zone in the southern and midwestern United States

The New Madrid Seismic Zone, sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate earthquakes in the Southern and Midwestern United States, stretching to the southwest from New Madrid, Missouri.

The Virginia Seismic Zone in the U.S. state of Virginia covers about 8,000 square kilometers (3,100 sq mi) in the Piedmont province. Earthquakes in the state are irregular and rarely reach over 4.5 in magnitude.

<span class="mw-page-title-main">1983 Coalinga earthquake</span> Earthquake affecting Central California

The 1983 Coalinga earthquake struck at 4:42 p.m. Monday, May 2 of that year, in Coalinga, California.

<span class="mw-page-title-main">1909 Wabash River earthquake</span>

The 1909 Wabash River earthquake occurred at 04:45 local time on September 27 with a maximum Mercalli intensity of VII. It measured 5.1 on a seismic scale that is based on an isoseismal map or the event's felt area. With moderate damage in the Wabash River Valley, it is currently the strongest earthquake recorded in the U.S. state of Indiana. The earthquake occurred somewhere along a fault within the Wabash Valley Seismic Zone.

The 1975 Morris earthquake occurred in western Minnesota on July 9 at 14:54:15 UTC, or 9:54 a.m. local time. The strongest instrumentally recorded rupture in the history of the state, it registered at magnitude 4.6 Mn and had a maximum Mercalli intensity of VI (Strong). It was the first earthquake to be recorded on any seismic instrument in the state since 1917. Tremors were felt over much of Minnesota, northern Iowa, and the eastern Dakotas.

<span class="mw-page-title-main">1944 Cornwall–Massena earthquake</span> Earthquake near the New York–Ontario border

The 1944 Cornwall–Massena earthquake occurred on September 5 at 12:38:45 am EDT in Massena, New York. It registered 5.8 on the moment magnitude scale and had a maximum Mercalli intensity of VIII (Severe). This area is part of the Saint Lawrence River Valley and the seismically active zone known as the Saint Lawrence rift system. The earthquake is the largest known in New York's recorded history and was felt over great distances.

The 1984 Morgan Hill earthquake occurred on April 24 at 1:15 p.m. local time in the Santa Clara Valley of Northern California. The shock had a moment magnitude of 6.2 and a maximum Mercalli intensity of VIII (Severe). The epicenter was located near Mount Hamilton in the Diablo Range of the California Coast Ranges. Nearby communities sustained serious damage with financial losses of at least US$7.5 million.

<span class="mw-page-title-main">1940 New Hampshire earthquakes</span>

The 1940 New Hampshire earthquakes struck on December 20 and again on December 24. Both shocks had an estimated Ms magnitude of 5.6, and a maximum Mercalli intensity of VII. These doublet earthquakes were the largest to hit the state in several hundred years. Damage included minor fractures or knocked over chimneys in a zone extending through New Hampshire and four other states: Maine, New York, Vermont and Massachusetts.

The 1867 Manhattan earthquake struck Riley County, Kansas, in the United States on April 24, 1867, at 20:22 UTC, or about 14:30 local time. The strongest earthquake to originate in the state, it measured 5.1 on a seismic scale that is based on an isoseismal map or the event's felt area. The earthquake's epicenter was near the town of Manhattan.

The 1940 El Centro earthquake occurred at 21:35 Pacific Standard Time on May 18 in the Imperial Valley in southeastern Southern California near the international border of the United States and Mexico. It had a moment magnitude of 6.9 and a maximum perceived intensity of X (Extreme) on the Mercalli intensity scale. It was the first major earthquake to be recorded by a strong-motion seismograph located next to a fault rupture. The earthquake was characterized as a typical moderate-sized destructive event with a complex energy release signature. It was the strongest recorded earthquake in the Imperial Valley, causing widespread damage to irrigation systems and killing nine people.

The 1865 Memphis earthquake struck southwest Tennessee near the Mississippi River in the United States on August 17 that year. Soon after the Mfa 5.0 earthquake hit, observers said the earth appeared to undulate and waves formed in nearby rivers. The force of the earthquake felled and cracked chimneys in Memphis and New Madrid, Missouri on the other side of the Mississippi. Shaking from the earthquake spread as far as St. Louis, Missouri; Jackson, Mississippi; and Illinois. Apart from the 1811–12 New Madrid earthquakes, only three major events have struck the state of Tennessee, in 1843, 1865, and 1895. Several minor events have taken place as well.

<span class="mw-page-title-main">1918 San Jacinto earthquake</span> Earthquake in Southern California

The 1918 San Jacinto earthquake occurred in extreme eastern San Diego County in Southern California on April 21 at 14:32:29 local time. The shock had a moment magnitude of 6.7 and a maximum Mercalli intensity of IX (Violent). Several injuries and one death occurred with total losses estimated to be $200,000.

The 1932 Eureka earthquake occurred on June 6 at 00:44:26 local time along the northern coastal area of California in the United States. With a moment magnitude of 6.4 and a maximum Mercalli intensity of VIII (Severe), this earthquake left one person dead from a falling chimney and several injured. The shock was the largest in the area since 1923 and was felt in southern Oregon and northern California.

The 1973 Point Mugu earthquake occurred at 06:45:57 local time on February 21 in the Point Mugu area of southeastern Ventura County of southern California. It had a moment magnitude of 5.8 and a maximum Mercalli Intensity of VII. This oblique-slip shock resulted in several injuries and $1 million in damage. The epicenter was near the Oxnard Plain and the northern terminus of the Santa Monica Mountains, in the California South Coast region.

The 1981 Westmorland earthquake occurred at 05:09 Pacific Daylight Time on April 26. The moderate strike-slip shock took place in the Imperial Valley of Southern California, just north of the Mexico–United States border. No injuries or deaths occurred, but damage was estimated at $1–3 million. With a Mercalli intensity of VII, this was one of fifteen intensity VII or greater shocks in the Imperial Valley that were observed in the 20th century up until April 1981. The region experiences large stand-alone events and earthquake swarms due to its position in an area of complex conditions where faulting transitions from strike-slip movement to the north and divergence to the south.

The 1915 Imperial Valley earthquakes were two destructive shocks centered near El Centro, California on June 22. The earthquakes measured Ms 6.25 and occurred nearly one hour apart at 19:59 and 20:57 PST. Both shocks were assigned VIII (Severe) on the Modified Mercalli intensity scale. Heavy damage occurred in the areas of Mexicali and El Centro, amounting to $900,000. At least six people were killed in the earthquakes.

The 1895 Charleston earthquake, also known as the Halloween earthquake, occurred on October 31, at 05:07 CST near Charleston, Missouri. It had an estimated moment magnitude of 5.8–6.6 and evaluated Modified Mercalli intensity of VIII (Severe). The earthquake caused substantial property damage in the states of Missouri, Illinois, Ohio, Alabama, Iowa, Kentucky, Indiana, and Tennessee. Shaking was widespread, being felt across 23 states and even in Canada. At least two people died and seven were injured.

References

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