On this day in 1812, the most violent of a series of earthquakes near Missouri causes a so-called fluvial tsunami in the Mississippi River, actually making the river run backward for several hours. Reportedly, the president’s wife, Dolley Madison, was awoken by the tremor in Washington, D.C. Fortunately, the death toll was smaller, as most of the survivors of the first earthquake were now living in tents, in which they could not be crushed. On January 23, 1812, an estimated 8.4-magnitude quake struck in nearly the same location, causing disastrous effects. The city of New Madrid, located near the Mississippi River in present-day Arkansas, had about 1,000 residents at the time, mostly farmers, hunters and fur trappers. Sulfur leaked out from underground pockets and river banks vanished, flooding thousands of acres of forests. 1812. Many of the small islands in the middle of the river, often used as bases by river pirates, permanently disappeared. At 7:15 a.m., an even more powerful quake erupted, now estimated to have had a magnitude of 8.6. Many of the small islands in the middle of the river, often used as bases by river pirates, permanently disappeared. However, the quake did cause landslides that destroyed several communities, including Little Prairie, Missouri. In the Mississippi River, water turned brown and whirlpools developed suddenly from the depressions created in the riverbed. The strongest of the tremors followed on February 7. Brick walls were toppled in Cincinnati. This series of large earthquakes ended in March, although there were aftershocks for a few more years. Earthquake causes fluvial tsunami in Mississippi. At 7:15 a.m., an even more powerful quake erupted, now estimated to have had a magnitude of 8.6. Large lakes, such as Reelfoot Lake in Tennessee and Big Lake at the Arkansas-Missouri border, were created by the earthquake as river water poured into new depressions. This one was estimated at an amazing 8.8-magnitude and was probably one of the strongest quakes in human history. Sometimes, before a tsunami hits, there is a huge vacuum effect, sucking water from harbours and beaches. The strongest of the tremors followed on February 7. Large trees were snapped in two. Given that the area was sparsely populated and there weren’t many multi-story structures, the death toll was relatively low. Earthquake causes fluvial tsunami in Mississippi. On this day in 1812, the most violent of a series of earthquakes near Missouri causes a so-called fluvial tsunami in the Mississippi River, actually making the river run backward for several hours. Waterfalls were created in an instant; in one report, 30 boats were helplessly thrown over falls, killing the people on board. Large lakes, such as Reelfoot Lake in Tennessee and Big Lake at the Arkansas-Missouri border, were created by the earthquake as river water poured into new depressions. People can see the ocean floor littered with flopping fish and other sea animals. This tremor literally knocked people off their feet and many people experienced nausea from the extensive rolling of the earth. However, the quake did cause landslides that destroyed several communities, including Little Prairie, Missouri. Church bells rang in Boston, thousands of miles away, from the shaking. from: http://www.history.com/this-day-in-history/earthquake-causes-fluvial-tsunami-in-mississippi. Brick walls were toppled in Cincinnati. Tsunamis can travel at speeds of about 500 miles or 805 kilometers an hour, almost as fast as a jet … 1812. In the Mississippi River, water turned brown and whirlpools developed suddenly from the depressions created in the riverbed. This one was estimated at an amazing 8.8-magnitude and was probably one of the strongest quakes in human history. Church bells rang in Boston, thousands of miles away, from the shaking. A normal wind wave travels at about 90kmh, but a tsunami can race across the ocean at an incredible 970kmh! Sulfur leaked out from underground pockets and river banks vanished, flooding thousands of acres of forests. This tremor literally knocked people off their feet and many people experienced nausea from the extensive rolling of the earth. The unusual seismic activity began at about 2 a.m. on December 16, 1811, when a strong tremor rocked the New Madrid region. Given that the area was sparsely populated and there weren’t many multi-story structures, the death toll was relatively low. How fast is a tsunami? Large trees were snapped in two. Waterfalls were created in an instant; in one report, 30 boats were helplessly thrown over falls, killing the people on board. This series of large earthquakes ended in March, although there were aftershocks for a few more years. The earthquake also caused fissures–some as much as several hundred feet long–to open on the earth’s surface. The city of New Madrid, located near the Mississippi River in present-day Arkansas, had about 1,000 residents at the time, mostly farmers, hunters and fur trappers. On January 23, 1812, an estimated 8.4-magnitude quake struck in nearly the same location, causing disastrous effects. In all, it is believed that approximately 1,000 people died because of the earthquakes, though an accurate count is difficult to determine because of a lack of an accurate record of the Native American population in the area at the time. Reportedly, the president’s wife, Dolley Madison, was awoken by the tremor in Washington, D.C. Fortunately, the death toll was smaller, as most of the survivors of the first earthquake were now living in tents, in which they could not be crushed. The unusual seismic activity began at about 2 a.m. on December 16, 1811, when a strong tremor rocked the New Madrid region.
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