Its magnitude was https://en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsunami Information at the University of Memphis. 2011-04-29 07:20:11 UTC 2.5 magnitude, 5 km depth Alexandria, Minnesota, United States 2.5 magnitude earthquake 2011-04-29 07:20:11 UTC at 07:20 April 29, 2011 UTC It was reported that during the night of Feb. 5, an earthquake took place, which happened again the following Sunday night (Feb. 12) on several occasions, which caused damage to furniture in the residence of Rev. We have seen some powerful ones, such as Morris in 1975 (4.6) and Staples in 1917 (4.8). Tom Egan of the Douglas County sheriff’s office said staff at the county’s 911 center felt it and took 25 to 30 calls from the public, mostly from people who were just curious. Chandler said Patterson, a geologist at the Center for Earthquake Research and It was a little scary!
A quake here in Minnesota? An earthquake like this happens every few years and generally not anything to worry about.
Earthquake list: past 30 days (only magnitude>=2.5) (1 quakes) Go to: Quake statistics | Largest quakes since 1900. on average, though that can vary a lot, and more often than not Like the Missouri quake in the 1800’s, where the might Mississippi reversed coruse for some time.By viewing our video content, you are accepting the terms of our
As for the weather…I guess we are approaching storm season, so yeah we should probably spend more time watching the skies than the ground.2012 coming to fast just think about it.
Although the earthquake-generating mechanism in the Midwest is incompletely understood, it may be related to the westward drift of the North American plate away from its spreading center, the Mid-Atlantic ridge, toward the subduction and transform zones along the Pacific coast. Consequently, a strong public interest exists in Minnesota regarding earthquakes, as does some concern about the potential of destructive earthquakes ever occurring here.Earthquakes are produced by movement of rock in the Earth's interior. one official in Alexandria who felt this quake told him it felt The USGS's simplified earthquake hazard map from 2014, included below, shows that if you want to get away from earth tremors, your best bests are central Texas, peninsular Florida, and a swath of the Upper Midwest including North Dakota, Minnesota, Iowa, Wisconsin, and Michigan. This material may not be published, broadcast, rewritten, or redistributed.
My wife kicked me for that one. i have felt a total of 4 quakes in 5 years of living here. there were maybe some that i was sleeping and did not wake up though.Minnesota’s geological history is a rich one, and these innumerable, minor tremors are a sign that the earth isn’t asleep beneath us either. Both earthquakes caused objects to fall, cracked masonry, and damaged chimneys, equating to intensities of VI to VII.
P. Berghold, and actually caused cracks in the house itself.
The 9.1 Tōhoku earthquake was the fourth most powerful ever recorded and triggered a massive tsunami (around 20,000 deaths). There are 36 earthquake incidents in Minnesota on record since 1931. And yes, we will have devastating tornadoes this spring and summer here.Earthquakes actually happen all the time all over the place – not just fault lines, just most of them are so mild that they aren’t felt on the surface.
it lasted about 2 seconds…15-20 seconds is pretty hard to believe. Seldom does a month go by that we do not hear of a destructive earthquake somewhere in the world.Earthquake hazard map showing peak ground accelerations having a 2 percent probability of being exceeded in 50 years, for a firm rock site.
early Friday, rattling ceiling tiles and prompting a few curious In contrast to the Dumont event, the weaker Brandon earthquake (magnitude 3.1) was not widely felt, but turned out to be the best recorded and most precisely located earthquake in Minnesota. But he said According to analyses of records from 40 of these seismographs (Fig. Many years ago I also saw the chandelier move in Decatur Ill.It wasn’t the rattle….. but what sounded like a explosion, that got my attention!Agreed! Near their epicenters these events caused considerable alarm, but the only known earthquake-related injuries were fortunately minor and in a way self-inflicted (one man fell out of a hayrack in his excitement).Although less dramatic than the Staples or Morris events, the 1993 Dumont (Fig. The magnitude 4.1 Dumont earthquake was felt over about 27,000 square miles (69,600 square kilometers), and was associated with intensity V to VI near the epicenter.
foundations in Stevens County around Morris. Several years ago I was sitting watching TV in the basement, (cement floor), and felt the sofa move. This westward drift sets up a subtle but pervasive compression that is oriented roughly east–west for most of North America, and this stress can reactivate minor movement along some ancient faults.
The quake, which the U.S. Geological Survey said was magnitude-2.5, struck at 2:20 a.m. and was felt mostly in the Alexandria area.“It was like a big boom, and right when that was happening, the house shook,” said Sandy Pederson of Alexandria, Minn. Sgt. So far these induced earthquakes have had small to moderate magnitudes, and are concentrated in areas that have recently undergone accelerated oil and gas development, such as parts of Oklahoma and Texas. In the Staples earthquake, many windows were indeed broken, but contrary to the headline, apparently no houses were shaken down. Sisters in the nearby massive school building noticed the vibrations as well, and so did other people including Mr. J.C. Rudolph and Mr. W. Koch.
The state averages less than 1 earthquake per year.
To produce movement, stress must build up along a fault plane until it overcomes internal friction and the rocks to either side elastically snap or In large earthquakes, such as the San Francisco earthquake of 1906, displacements of tens of feet can occur along many miles of the fault plane, whereas smaller earthquakes may be associated with displacements of only a few feet along a few hundred feet of the fault plane. Relatively few people in the largely rural area would have been awake at the time, he said.