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Old 07-25-2007, 03:26 PM
 
Location: Alexandria, Louisiana
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Which U.S. cities are at risk of experiencing a major earthquake at some point in the future?
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Old 07-25-2007, 03:35 PM
 
Location: 602/520
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Los Angeles, San Francisco, Seattle, and Memphis are the cities that I have heard are most at risk.
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Old 07-25-2007, 11:55 PM
 
Location: Alexandria, Louisiana
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Charleston SC, Boston, & St. Louis are probably also at risk. Charleston had a large earthquake in 1886. Boston had a significant earthquake in 1755. And St. Louis is located near the New Madrid fault zone.
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Old 07-25-2007, 11:57 PM
 
Location: Deep In The Heat Of Texas
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I forgot about St. Louis. That will be a doozie if it ever happens.

How about Alaska?
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Old 07-26-2007, 02:17 AM
 
Location: St. Louis, MO
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Quote:
Originally Posted by Rmaf623 View Post
Charleston SC, Boston, & St. Louis are probably also at risk. Charleston had a large earthquake in 1886. Boston had a significant earthquake in 1755. And St. Louis is located near the New Madrid fault zone.
Memphis is much closer to the New Madrid zone than St. Louis. St. Louis I believe is at least 150 miles north of it. Memphis is something like 100 miles to the south. Regardless, yes both are not very far from it.
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Old 07-26-2007, 02:20 AM
 
Location: St. Louis, MO
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Seattle and Portland could all experience major earthquakes, in addition to Downtown Los Angeles and San Francisco. Downtown Los Angeles I believe is located DIRECTLY on top of a HIGHLY hazardous fault...I'm not sure if it's the San Andreas or not. If the New Madrid earthquake happened again like it did 200 years ago, it would make people pray for another 1906 earthquake. THe last New Madrid one I believe was an 8.0 on the Richter scale.
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Old 07-26-2007, 10:38 AM
 
Location: Alexandria, Louisiana
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Are San Diego & Las Vegas at risk of a major earthquake?
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Old 07-26-2007, 01:32 PM
 
Location: St. Louis, MO
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Quote:
Originally Posted by Rmaf623 View Post
Are San Diego & Las Vegas at risk of a major earthquake?
San Diego probably is given its close proximity to Los Angeles. Las Vegas not sure.....it is close enough to California, that's for sure to be affected by one.
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Old 07-26-2007, 02:22 PM
 
Location: Northridge/Porter Ranch, Calif.
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Quote:
Seattle and Portland could all experience major earthquakes, in addition to Downtown Los Angeles and San Francisco. Downtown Los Angeles I believe is located DIRECTLY on top of a HIGHLY hazardous fault...I'm not sure if it's the San Andreas or not.
The San Andreas fault is about 50 miles from downtown Los Angeles (at its closest). There is a fault under downtown L.A., but it is the type that ruptures only every few thousand years.

Quote:
THe last New Madrid one I believe was an 8.0 on the Richter scale
Yes, I've read that, too. There were three separate quakes.
Dec. 16, 1811... 8.1
Jan. 23, 1812... 7.8
Feb. 7, 1812... 8.0

Those are the estimated magnitudes.

-Fleet
(Seismology enthusiast)
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Old 07-26-2007, 02:59 PM
 
Location: Salt Lake City, Utah
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Quote:
Originally Posted by Rmaf623 View Post
Which U.S. cities are at risk of experiencing a major earthquake at some point in the future?
Salt Lake City will be at one point.
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