Most of these events have been small, in the 2 to 3 magnitude range, but at least 15 earthquakes centered in the state have caused damage. Ohio has recorded at least 200 earthquakes above 2.0 magnitude since the earliest record in 1776. The NMSZ was the location of some of the largest earthquakes in US history, particularly east of California.A long, long time ago, North America tried to split apart due to tectonic plate movement, but the split never quite completed. This 5.0-magnitude event was felt throughout multiple states and caused minor to moderate damage. Ohio has recorded at least 200 earthquakes above 2.0 magnitude since the earliest record in 1776. These quakes, despite the sparsely populated region at the time, were devastating. There are 91 earthquake incidents in Ohio on record since 1931. Bed shaking left and right! This quake is estimated to be perhaps an 8.0. An extensive linear feature in deep Precambrian rocks, known as the Akron Magnetic Boundary, is thought to be responsible for some of these earthquakes. They are still far more likely to be affected by flooding or wind damage many times over than they are at having their property or themselves put in danger from an earthquake even once. Exclusive vid Dave.
All of the 6 main earthquakes and many of the aftershocks were felt in Ohio, including damaging a fledgling Cincinnati.Because of the nature of the East’s bedrock, seismic waves propagate very easily and keep their intensity for long distances, so much so that the sequence shook cities like Boston and Washington D.C. hard enough to ring their church bells and cause general alarm. Loading... Unsubscribe from Dave? The causes of earthquakes in this region are poorly understood at present.Small earthquakes have occurred in a broad area of southern Ohio. For anyone interested in Ohio… This fault system has become well-known for one of the most extraordinary earthquake sequences in recorded history.This sequence began on December 16, 1811, when an estimated 7.5-7.9 quake struck far northeastern Arkansas, followed by an estimated 7.4 aftershock just a few hours later. The rift zone trends northwest from Champaign County and into Indiana.The Northeastern Ohio Seismic Zone includes a broad area from eastern Cuyahoga County east to the Pennsylvania border and south to the vicinity of Akron. The largest earthquake in this zone occurred on January 31, 1986 in southern Lake County. Ohio actually has a system of seismometers that monitors activity in the state. A few of them have caused minor damage. The total felt area was approximately 673,000 km 2. Columbus experienced the movement as MM IV.Almost 50 years later, on January 31, 1986, a magnitude 5.0 hit northeast of Cleveland in Lake Erie. The largest earthquake in Ohio occurred on March 9, 1937, in western Ohio in the Shelby and Auglaize Counties area. Again, there is no direct measurement of the size, but estimates range from 5.4 to near 6.0. Still, a relatively high probability remains of at least a 6.5 magnitude occurring. This earthquake followed a smaller one on March 2, and is estimated to have had a magnitude of 5.4. The NMSZ is still active and produced a quake felt in Ohio as recently as 2011.All that said, Ohioans probably have little reason to rush out and buy earthquake insurance. Effects listed on the MM scale say:Felt outside by most… dishes and windows may break and large bells will ring. These earthquakes occur at depths of about three miles along faults associated with a Precambrian failed rift zone.