Note: Beginning in 2016, the U.S. Geological Survey has produced an annual seismic hazard map for the central and eastern United States that includes induced earthquakes. The only damaging earthquakes reported through 1989 in this huge tract of land are four MMI VI earthquakes in westernmost Florida (1780), southern Louisiana (1930), and eastern Texas (1891, 1932) (Stover and Coffman, 1993 #1986). See below for an embedded map of all documented Alabama earthquakes dating back to 1886. Since then, more than 4,000 earthquakes have been recorded, most of which were too small to be felt. Copyright 2023. This post-rift sequence thickens seaward (Salvador, 1991 #2020). ", 10.1130/0091-7613(1998)026<0515:ESITRD>2.3.CO;2, "Summary of 1811-1812 New Madrid Earthquakes Sequence", "Report of the Independent Expert Panel on New Madrid Seismic Zone Earthquake Hazards", "The Enigma of the New Madrid Earthquakes of 1811-1812", "Historic Earthquakes: Near Charleston, Mississippi County, Missouri", "Historic Quakes: Southern Illinois 1968 11 09 17:01:40.5 UTC", "Government warns of "catastrophic" U.S. quake", "Impact of New Madrid Seismic Zone Earthquakes on the Central USA", "Iben Browning, 73; Researcher Studied Climate and Quakes", "Responses to Iben Browning's Prediction of a 1990 New Madrid, Missouri, Earthquake", "New Madrid fault system may be shutting down", Thatcher, Wayne "Present-Day Crustal Movements and the Mechanics of Cyclic Deformation", "Nature News: Seth Stein: The Quake Killer", "Earthquakes Actually Aftershocks Of 19th Century Quakes; Repercussions Of 1811 And 1812 New Madrid Quakes Continue To Be Felt". 2023 Advance Local Media LLC. Epicenter maps show only sparse, low-magnitude seismicity within the fault belt (Engdahl, 1988 #1959; Stover and Coffman, 1993 #1986). Alabama shakes: Small earthquakes common, potential for big one exists. Tap/click on "gear icon" for options and settings. A recent . Epicenter at 32.784, -86.766 A line of large grabens approximates the landward limit of Jurassic salt, and Cenozoic faulting is sparse in the Interior zone (Ewing, 1991 #1994; Salvador, 1991 #2019; Ewing and Lopez, 1991 #2032). Crossing over Transmountain Road and even running along Alabama Street near Northeast El Paso. Epicenter at 34.598, -85.456 [] Reply. On Wednesday, a 2.1-magnitude earthquake was recorded just over half a mile north of Flomaton. The American Geosciences Institute represents and serves the geoscience community by providing collaborative leadership and information to connect Earth, science, and people. There are major and minor fault lines all over the United This page was last edited on 30 January 2023, at 06:41. (2.2 miles), 2021-08-25 06:19:18 UTC See here for older maps for Alaska, Hawaii, and U.S. territories. 13.2 km from Sylvania States. In the winter of 1811-1812, a series of massive quakes ripped through the southeast Missouri, essentially destroying the town of New Madrid (pronounced mad-rid, not muh-drid), and causing major damage to St. Louis. Many of the published accounts describe the cumulative effects of all the earthquakes (known as the New Madrid Sequence), so finding the individual effects of each quake can be difficult. A .gov website belongs to an official government organization in the United States. They released this map for the lower 48 states in 2014. Coordinates: .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}3635N 8935W / 36.58N 89.59W / 36.58; -89.59. On average, one earthquake per year is large enough to be felt in the area. These maps are used in determining building seismic codes, insurance rates, and other public decisions. D/Light Brown. The earthquake that occurred Wednesday didn't happen near a fault line in Tennessee, for the most part, the state is free of any faults that would suggest a vulnerability to earthquakes. at 06:12 November 07, 2021 UTC, Location: Unionville Interactive fault map and comprehensive geologically based information on known or suspected active faults and folds in the United States. AGI's Critical Issues Program is generously underwritten in memory of Charles L. Weiner. 5.2 km from Ground shaking is the most powerful predictor of damage from an earthquake. While Alabama sees plenty of minor quakes on its own, the largest danger of a significant earthquake event probably lies far across the state lines in the New Madrid seismic zone, which stretches across Missouri, Arkansas, western Tennessee, and Kentucky. The USGS issued a fact sheet in 2009 stating the estimate of a 710% chance of a New Madrid earthquake of magnitude comparable to one of the 18111812 quakes within the next 50 years, and a 2540% chance of a magnitude 6.0 earthquake in the same time frame. Lidar imagery of the Wenas Valley illuminated the west-northwest-trending, 2- to 8-meter-high scarp as it bisected alluvial fans developed at the mouths of canyons along the south side of Umtanum Ridge. [4] The rift failed to split the North American continent, but it has remained as an aulacogen (a scar or zone of weakness) deep underground. at 06:37 April 07, 2021 UTC, Location: 13.2 km from These gulf-margin faults face southwest in westernmost Florida, southwestern Alabama, and southern Mississippi; south in Louisiana and southernmost Arkansas; and southeast in eastern and southern Texas (Ewing and Lopez, 1991 #2032). Format. at 06:19 February 01, 2021 UTC, Location: Those faults date back millions of years, to the Jurassic and Cretaceous periods, when the supercontinent Pangea split into the continents as we know them today. For the most up-to-date information, please refer to the interactive fault map. [27], The lack of apparent land movement along the New Madrid fault system has long puzzled scientists. Earthquake fault lines are a lines that mark all the known 82 km S of Manokwari, Indonesia. Epicenter at 34.764, -84.942 The map provides the locations, dates, and magnitudes of historical earthquakes, as well as highlighting recent earthquakes. Advanced National Seismic System Latest earthquakes map and list (past 24 hours, M2.5+). (3.2 miles), 2022-05-15 09:32:06 UTC Epicenter at 34.98, -86.619 at 02:27 July 18, 2021 UTC, Location: at a depth of 13 kilometers (km) approximately 25 km southwest of the capital, Port-au-Prince. Greene County, south of Tuscaloosa, experienced 21 earthquakes in nine months from November 2014 to August 2015, including three separate earthquakes on a single day in February 2015, and a week in May 2015 that saw five earthquakes around Eutaw. It is at least 2 km thick everywhere in the belt of gulf-margin normal faults. Epicenter at 35.046, -85.128 For information about specific risks in your local area, contact your state geological survey or regional earthquake consortium: Click here to access the National Seismic Hazard maps. The map provides the locations, dates, and magnitudes of historical earthquakes, as well as highlighting recent earthquakes. [10], Two fault zones are found in Alabama, the Southern Appalachian Seismic Zone (also known as the Eastern Tennessee Seismic Zone) in northeast and central Alabama, and the Bahamas Fracture Seismic Zone in southwest Alabama. A belt of mostly seaward-facing normal faults borders the northern Gulf of Mexico in westernmost Florida, southwestern Alabama, southern Mississippi, all of Louisiana and southernmost Arkansas, and eastern and southern Texas (Ewing and Lopez, 1991 #2032). Its now been 207 years since the last major New Madrid seismic event. 2023-02-12 02:43:51 (UTC-08:00) 44.1 km . Furthermore, some of the sparse seismicity in the normal-fault belt may be artificially induced. The quake damaged the civic building at Henderson, Kentucky, and was felt in 23 states. interpreted the lack of similar signals elsewhere in the chronology as evidence against large New Madrid earthquakes between those years and 1811. Epicenter at 34.683, -85.074 FAQ - Frequently Asked Questions The interactive map to below shows epicenters of historical Alabama earthquakes since 1886 and surface and basement faults. at 22:05 January 22, 2021 UTC, Location: [14][15], A meteor crater over five miles in diameter was identified near Wetumpka, Alabama in 19691970. Trenton All information managed by the Geological Survey of Alabama. Salt flowed southward and pierced upward, and the overlying sediments extended on listric, normal, growth faults that flatten downward into detachments in the salt and in overpressured shales (Ewing, 1991 #1994; Nelson, 1991 #1995). (6.2 miles). The zone had four of the largest earthquakes in recorded North American history, with moment magnitudes estimated to be as large as 7.0 or greater, all occurring within a 3-month period between December 1811 and February 1812. Epicenter at 35.636, -85.655 Dalton An official website of the United States government. This map shows areas of seismic risk from high (red) to low (grayish-green). at 17:09 August 21, 2022 UTC, Location: A 2009 study estimated that a 7.7-magnitude New Madrid event could cause $1 billion in damages to roads and bridges in Alabama, hundreds of miles away from the projected epicenter. Data for each event are provided. at 06:44 November 22, 2022 UTC, Location: Epicenter at 34.802, -85.046 Instruments were installed in and around the area in 1974 to closely monitor seismic activity. at 10:57 December 04, 2022 UTC, Location: The presence of the normal faults throughout the post-rift sequence from westernmost Florida to southern Texas (Ewing and Lopez, 1991 #2032) demonstrates that the sequence is sliding and extending seaward on detachments in weak salt and overpressured shales. That area was sparsely populated then (the city of Memphis had not yet been founded), but similar quakes today would cause massive damage, potentially stretching into north Alabama. [1][5] This province is further subdivided into the Piedmont, Valley and Ridge, and Appalachian Plateaus provinces. Strong shakingDamage negligible in buildings of good design and construction; slight to moderate in well-built ordinary structures; considerable damage in poorly built structures. Because the tree ring record in Reelfoot Lake and the St. Francis sunk lands extend back to 1682 and 1321, respectively, Van Arsdale et al. Shaking from the 1997 quake near Atmore was felt as far away as eastern Mississippi, and effects from the quake were detected as far north as Lawrence County. rest of the gulf coast. [1][5] This province is further divided into the Interior Low Plateaus province. Could experience strong shaking. Featured at the top are our most popular interactive maps, but there are more USGS map publications, listed below on this page. at 07:37 February 24, 2023 UTC, Location: Newest First. [15], The first known written record of an earthquake felt in the NMSZ was from a French missionary traveling up the Mississippi with a party of explorers. Where are the Alabama earthquake fault lines? This fault line is called the Quaternary fault. A map of the fault lines database from the United States Geological Survey. At the coastline, the sequence is at least 10 km thick west of the Mississippi River and at least 5 km thick farther east. [3][5], This relative weakness is important, because it would allow the relatively small eastwest compressive forces associated with the continuing westward continental drift of the North American Plate to reactivate old faults around New Madrid, making the area unusually prone to earthquakes in spite of it being far from the nearest tectonic plate boundary. The post-rift sequence and its belt of gulf-margin normal faults may be mechanically decoupled from the underlying crust. Booneville It spans a sequence of four northwest-trending tectonostratigraphic terranes of the Klamath Mountains geologic province that includes, from east to west, the Eastern Hayfork, Western Hayfork, Rattlesnake Creek, and Western Jurassic terranes, as well as, in the southwe, The Hyampom 15' quadrangle lies west of the Hayfork 15' quadrangle in the southern part of the Klamath Mountains geologic province of northern California. It can be particularly helpful for those who want to know what their risk of experiencing an earthquake is where they live. These listric normal faults, their splays, and their antithetic and transfer faults make up the belt of gulf-margin normal faults described here. The map also shows potentially active faults from a separate 2014 report (click here to download). Earthquake scenarios describe the expected ground motions and effects of specific hypothetical large earthquakes. at 08:07 December 04, 2022 UTC, Location: Epicenter at 34.859, -85.547 at 09:32 May 15, 2022 UTC, Location: Rapid deposition and the resulting enormous thickness of the post-rift sediments caused them to collapse and spread seaward. Note that most faults that can affect residents are either onshore or just offshore. It is southwest of the Wabash Valley Seismic Zone. Although some of these ideas have gained some acceptance among researchers, they have not been accepted by the National Earthquake Prediction Evaluation Council, which advises the USGS. Over half a mile north of Flomaton of specific hypothetical large earthquakes science, and U.S. territories in 23.... Most faults that can affect residents are either onshore or just offshore government in... 2020 ) scenarios describe the expected Ground motions and effects of specific large. 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