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New Madrid fault and earthquake-prone region considered at high risk today. The 1811–1812 New Madrid earthquakes were a series of intense intraplate earthquakes beginning with an initial earthquake of moment magnitude 7.2–8.2 on December 16, 1811, followed by a moment magnitude 7.4 aftershock on the same day. Two additional earthquakes of ...
The USGS issued a fact sheet in 2009 stating the estimate of a 7–10% chance of a New Madrid earthquake of magnitude comparable to one of the 1811–12 quakes within the next 50 years, and a 25–40% chance of a magnitude 6 earthquake in the same time frame. [32] In July 2014, the USGS increased the risk assessment for the New Madrid area. [33]
At El Hierro the tsunami can shoal and rise to a height of 100 metres (330 ft), while the wave train surrounds La Palma and continues eastward with a height of 20–30 metres (66–98 ft). [67] Zhou et al. 2011 used numerical simulations to model various tsunamis, including a scenario resulting from a mass failure at La Palma. [68]
December 16, 1811 1811–1812 New Madrid earthquakes Montana: 7.2 August 17, 1959 1959 Hebgen Lake earthquake Nebraska: 7.0 November 15, 1877 [49] Nevada: 7.3 December 16, 1954 1954 Fairview earthquake New Hampshire: 6.5 June 1, 1638 1638 New Hampshire earthquake New Jersey: 5.3 November 29, 1783 1783 New Jersey earthquake New Mexico: 6.2
A 3D printed model, created by Dr. Christodoulos Kyriakopoulos with University of Memphis’ Center for Earthquake Research and Information, demonstrates the New Madrid 1812 earthquake on Thursday ...
Bigger earthquakes have more and larger aftershocks and the sequences can last for years or even longer especially when a large event occurs in a seismically quiet area; see, for example, the New Madrid seismic zone, where events still follow Omori's law from the main shocks of 1811–1812. An aftershock sequence is deemed to have ended when ...
Tsunami warnings issued after a powerful 7.6-magnitude earthquake rocked the Caribbean Sea have been cancelled, the US Geological Survey (USGS) has said. Officials say the earthquake's epicentre ...
A strong earthquake struck the South Pacific Island nation of Vanuatu on Sunday, but there were no tsunami warnings or immediate reports of damage. The quake had a preliminary magnitude of 6.3 ...