[Hacksaw]

I just had an earthquake in Oregon.I moved from California 2 years ago.i don't like this

What magnitude?

[haroldjackson29]

What magnitude?

3.9-4.0.
20 miles away, 17 miles down..so they say.
Wasn't long but so what? I hate it

[Hacksaw]

What kind of faults run through Oregon? Transcurrent or slip fault? sideways movement...
Or more of a normal or reverse type? up and/or down...
Sort of similar to when two tectonic plates collide in a subduction zone and one (usually oceanic plate) goes under the other (continental plate)...
The latter in the ocean can create tsunami's.

[RedAlice]

3.9-4.0.
20 miles away, 17 miles down..so they say.
Wasn't long but so what? I hate it

I will agree with you on hating earth quakes.

Scary as fuck when they start and you don’t know what is going to happen. It sucks.

All good with you? I hope so.

Most of the posters here know the experience.

[/zn/]

I will agree with you on hating earth quakes.

Scary as fuck when they start and you don’t know what is going to happen. It sucks.

All good with you? I hope so.

Most of the posters here know the experience.

I was in earthquakes in California, Illinois, and Maine. I don't seem to be able to escape them. I was actually hurt in the one in Illinois (way back in 1973). (I hit my head and needed a few stitches.)

...

[snackdaddy]

I will agree with you on hating earth quakes.

Scary as fuck when they start and you don’t know what is going to happen. It sucks.

All good with you? I hope so.

Most of the posters here know the experience.

Being in the central valley we don't feel em as much as the Bay Area or So Cal. But I really felt the Coalinga quake back in 83. Scared the crap outta me. I thought the old building I was working in downtown Fresno was going to come down. I was by myself. I think I set a record for a 40 yard dash running out of there.

[dieterbrock]

I was actually hurt in the one in Illinois (way back in 1973). (I hit my head and needed a few stitches.)

Hmmmmm...... That makes a lot of sense and explains a lot!!!

[haroldjackson29]

I was in earthquakes in California, Illinois, and Maine. I don't seem to be able to escape them. I was actually hurt in the one in Illinois (way back in 1973). (I hit my head and needed a few stitches.)

...

I'll have to look that one up.

[Hacksaw]

Hmmmmm...... That makes a lot of sense and explains a lot!!!

No you didn't. lol

E-quakes are spooky as you never know how big or how many or how long. Most folks are injured or killed when things start falling down. Newer bldg's / bridges (past 40 years) in common E-quake areas are built to sway and not crumble.

The San Andreas (slip) fault in California is a nasty one. It's huge. As the continental plate slides northward and the Oceanic plate is moving southward, they must release the tension between them. It's been quite a long while since the last release of that tension so many are fearing "the big one" out here on the west coast...

Seismologists have said that in 1 million years, San Francisco and LA will be almost side by side. (shorter road trip to 9ers games)
They also say that everything east of the San Andreas is going to fall into the Atlantic ocean when it let's go next time.

[/zn/]

I'll have to look that one up.

I got the year wrong. 1972.

Earthquakes in Illinois have destructive history

http://www.myjournalcourier.com/feature ... ve-history

Most of the nation’s costliest earthquakes have occurred in the Pacific region, from California to Alaska. Illinois has not — at least, not yet — suffered such devastation.

Thanks to a series of small faults that crisscross southern Illinois, tremors occasionally are felt across the state and usually do little more than rattle nerves.

That’s not to say damaging earthquakes are unheard of in the state.

The best known earthquake to rock Illinois was the New Madrid event of 1811-1812, which actually was a series of three quakes. Though the Richter scale had not been created, various estimates place the New Madrid quakes in a range from 7.0 to 8.0 on the scale. According to the Illinois State Geological Survey, that event was the largest release of seismic energy ever documented in the continental United States.

Those quakes struck six years before Illinois attained statehood and, with population sparse among the territory, there was minimal loss of life and property damage. The New Madrid quakes were 16 years after the first reported earthquake in the Illinois region, a 90-second shaker in 1795 at Kaskaskia.

Fortunately, nothing has matched the New Madrid event in Illinois history, though there have been some notable shakers. Among them was a quake on Nov. 9, 1968, measuring 5.4 on the Richter scale; it was centered in Hamilton County in southern Illinois. Felt across 23 states and as far away as Boston, that quake caused considerable damage in McLeansboro, including at the local high school.

An estimated 90 percent of county buildings in McLeansboro, including the courthouse, sustained some form of physical compromise. Damage to chimney and walls also was reported in St. Louis, while windows broke as far away as Alton.

Ironically, the 1968 quake came 10 years and one day after a 4.4 tremor in the same area caused plaster to fall and walls to crack in several southern Illinois towns.

Two significant earthquakes hit Illinois in 1909, the first an estimated 5.1 quake near Aurora on May 26 that brought down chimneys in Streator, Troy Grove and as far away as Waukegan. Reports of cracks in walls also were received in Bloomington.

That July 19, an estimated 4.8 quake centered between Havana and Petersburg resulted in some of the worst damage in Illinois outside the New Madrid quake of a century before. More than 100 chimneys were wiped out in Petersburg while, at a farm west of town, some 20 windows were broken and bricks above doors were knocked out. Collapsed chimneys also were reported in Springfield and as far away as Davenport, Iowa.

Also hitting the Quad Cities was a 4.0 quake centered near Rock Island on Nov. 12, 1934. It dropped bricks from some chimneys and halted pendulums on a few clocks. At Augustana College in Rock Island, loose plaster was dislodged from a men’s dormitory, while a stucco cornice was knocked off St. Joseph’s School. Loose bricks also were scattered from a few structures in the area.

On June 27, 1881, an estimated 4.6 tremor in the southwest part of La Salle caused six parallel fissures that could be seen running northwest-southeast for 183 miles. The shaking cracked walls, foundations and furnaces in the local bottle and glass factories.

On Sept. 27, 1882, an overnight quake estimated at 4.4 woke up people across the region and badly cracked a chimney in Greenfield.

Other damaging Illinois tremors include a 5.1 quake in April 1917 that shifted buildings from foundations in Granite City, an an August 1965 tremor that measured only 3.4, yet caused significant damage in Tamms. A 4.0 tremor was recorded on Sept. 15, 1972, near Amboy in Lee County, while a 4.2 quake hit on June 28, 2004, near Prairie Center in La Salle County.

Elsewhere in southern Illinois, a 4.8 quake in November 1922 brought down chimneys and cracked windows in Eldorado in Saline County. Many in Illinois felt a 6.8 quake centered near Charleston, Missouri, on Halloween 1895, the last strong quake to hit the Midwest.

More recent Illinois quakes include a 5.0 event near Olney on June 10, 1987, that was felt in 16 states and left minor damage, especially in Lawrence and Richland counties. A 5.0 quake was felt on June 18, 2002, near Mount Vernon.

At 4:37 a.m. April 18, 2008, an earthquake measuring 5.2 was centered near Mount Carmel and felt as far away as Canada, setting news programs and social media abuzz. Some structural damage was reported in communities near the epicenter. Ironically, it was the 102nd anniversary of the destructive San Francisco quake that cost an estimated 3,000 lives.

The 2008 quake occurred along the Wabash Valley Fault, which has produced most of the recent southern Illinois tremors. In contrast, the more famous New Madrid fault has not produced a significant earthquake in decades.

In 2005, seismologists predicted a 90 percent chance that an earthquake of 6.0 to 7.0 would hit the Midwest again in the next half-century, likely on the Wabash Valley Fault. With urban centers such as St. Louis, Memphis and Chicago in close proximity, such an event could cause extensive damage.

The 2005 finding appears much stronger than 1990 claims from Iben Browningthat a severe New Madrid earthquake was imminent; his prediction still hasn’t come true, but it left some Midwestern residents terrified of an impending disaster.

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