Posted on 09/03/2016 5:05:06 AM PDT by Old Yeller
Strongest one I've ever felt in Wichita.
FOX23 in Tulsa says USGS puts it at 5.6 centered near Ponca City, OK.
Thanks. Earthquake maps & sites have been very slow to catch up on this news
5.6 near Pawnee OK - http://earthquake.usgs.gov/earthquakes/eventpage/us10006jxs#executive
The new Moon was on the 1st of this month.
‘twas north of OK City, felt here at Lake of the Ozarks.
5.6 I think...
From Memphis to Dallas to Omaha? Doubt it. I’m going to go with New Madrid Fault Line.
Felt a rolling quake here in north Dallas just after 7 a.m. Central Time.
Thanks for the thread. We felt it too in Oklahoma. Long duration, significant shaking which rattled lamps. Much stronger than any of the other recent ones which have happened here.
From Memphis to Dallas to Omaha? Doubt it. I’m going to go with New Madrid Fault Line.
—
It wouldn’t be good for that fault to get active again.
>>> FOX23 in Tulsa says USGS puts it at 5.6 centered near Ponca City, OK.
Wow!... no wonder it shook us out of bed... I’m IN Ponca City!
I need a good reliable USGS link... my earthquake app doesn’t show this.
“Shake, rattle, and roll”
by Bill Halley and The Comets
https://m.youtube.com/watch?v=8B7xr_EjbzE
See post #37.
Although there has been occasional earthquake activity in that region long before fracking, that does appear to be what they’re going to blame it on.
From accuweather.com, Nov 13, 2014...
Frequent, rumbling tremors beneath the earth may be a common occurrence in California, but Oklahoma has now surpassed the state in the number of earthquakes felt this year - a trend that is surprising geophysicists and raising concern.
“It is actually very surprising to us as well,” Pasadena, California-based U.S. Geological Survey Geophysicist Elizabeth Cochran said in July.
Between 1975 and 2008, only an average of two earthquakes with a magnitude of 3.0 or greater would occur each year in Oklahoma.
Changes in pressure near faults in Oklahoma that surpass the fault’s critical pressure threshold are likely the cause of the seismic activity surge.
The cause for this increase does not appear to be natural and has likely been induced by fluid injection, part of the crude oil and gas industry’s disposal of wastewater through the creation of wastewater wells.
The injection of wastewater fluids deep into the ground can lubricate existing, dormant faults and change the stress and pressure of the fault, leading to increased seismic activity, Cochran said.
“These quakes tend to be shallower,” she said. “At this point, we do not think this is a natural variation.”
The largest event in Oklahoma to occur in the past century was a 5.6-magnitude quake that struck in November 2011.
“That was the largest event linked to injection,” Cochran said.
With the growing number of quakes in the region, the hazards associated with an even larger event occurring near a major metropolitan area are raising eyebrows among geophysicists.
“That is our big concern,” Cochran said.
http://www.accuweather.com/en/weather-news/breaking-rare-48-earthquake-ru/37271020
Wonder how a large quake would have felt like if you were working underground in those lead mines just west of town - No lights. No warning. Just a sudden noise and then 40 seconds when the rock and debris all around you starts moving?
Someone I know in Okla. said he felt one. Via twitter, some say it was about 7:03 CT “near Lawton Fairgrounds” and a tweet from 3 days ago said a 3.3 quake hit northern OK
I felt it near Topeka Kansas. Very strong.
Oklahoma had quakes like they having now from the 1950s into the early ‘60s. Then it quieted down.
yes, but what about the Yellowstone caldera?
Small quakes happen there all the time.
Kansas
Earthquake History
The earliest, and possibly the strongest, shock reported within Kansas’ borders occurred April 24, 1867. Several persons were injured, though not seriously. Plaster cracked, objects were thrown from shelves, and doors and windows were shaken at Lawrence. The earthquake was also felt strongly at Manhattan, where stones loosened on buildings and walls cracked. A heavy wave, about two feet high, was observed on the Kansas River at Manhattan. The tremor was felt over an area of 300,000 square miles in Kansas, Missouri, Nebraska, Arkansas, Illinois, Indiana, Kentucky, and possibly Ohio.
A moderate earthquake near Valley Falls, northeast of Topeka, on November 8, 1875, was felt over about 8,000 square miles in eastern Kansas and western Missouri. Dishes rattled; windows shook; some buildings rocked or quivered (intensity V).
Eastern Kansas felt the effects of a strong earthquake centered near Charleston, Missouri, in 1895. The October 31 shock affected about one million square miles over 23 States. Topeka reported the strongest effects in Kansas - houses shook and people were awakened. Dishes and windows rattled in other towns.
The area around Dodge City and Meade, in western Kansas, was shaken with an intensity V earthquake on October 27, 1904. Some reports indicated three shocks were felt at Dodge City.
On January 7, 1906, a strong shock affected an area of about 10,000 square miles in Kansas, Missouri, and Nebraska. Chimneys were thrown down and some cracks in walls were observed at Manhattan (intensity VII). Houses and buildings vibrated at Topeka, where a loud roaring sound was also heard. Some towns reported feeling two or three shocks. A series of small aftershocks of the January 7 earthquake was felt in Manhattan, the last being reported on January 23.
An earthquake on March 18, 1927, near White Cloud, in the extreme northeastern portion of the State, rocked houses such that people rushed out of them. The felt area was limited to about 300 square miles.
Four shocks - two on September 23, 1929, one each on October 21 and December 7, 1929 - were reported from the same area of northeastern Kansas. Houses shook over a broad area around Manhattan in September. The total affected area covered approximately 15,000 square miles. The October tremor was felt over an area of 8,000 square miles; that in December covered only 1,000 square miles. The maximum reported intensity of all these earthquakes was V.
A moderate earthquake was felt on February 20, 1933, over about 6,000 square miles in Norton and Decatur counties, Kansas, and Furnas and Harlan counties, Nebraska. Buildings and houses swayed; dishes and windows rattled; people ran out of their houses.
A damaging earthquake centered near El Reno, Oklahoma on April 9, 1952, affected a total area of 140,000 square miles, including all of the eastern half of Kansas. The magnitude 5.5 shock was felt in Kansas most strongly (intensity V) at Medicine Lodge; intensity V effects were also observed at Kansas City.
On January 6, 1956, minor damage occurred at Coats, Coldwater, Medicine Lodge, and Wilmore, Kansas, and Alva, Oklahoma. The damage was limited to loosened bricks, cracked plaster and chimneys, and objects knocked from walls and shelves. Many observers reported being shaken from their beds by the shock a few minutes before 6 a.m. The total felt area covered approximately 16,000 square miles.
Another felt earthquake with an epicenter in Kansas occurred April 13, 1961. The area affected was about the same as that from the 1933 tremor, principally Norton County, Kansas, and Furnas County, Nebraska. Intensity V was the maximum reported from this region.
The November 9, 1968, earthquake centered in southern Illinois was felt moderately throughout the eastern portion of Kansas. All or parts of 23 states were affected by this magnitude 5.3 shock.
http://earthquake.usgs.gov/earthquakes/states/kansas/history.php
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