5.2 earthquake rocks the Midwest
April 18, 2008 (WEST SALEM, Ill.) (WLS) -- Shake, rattle and roll out of bed. An early morning earthquake rocked the Midwest Friday.
Dozens of aftershocks have been felt since the 5.2-magnitude quake at 4:36 a.m. Friday, with its epicenter nearest to the small downstate town of West Salem.It is a town of about 1,100 people, and unlike in Chicago, few there could have slept through Friday morning's earthquake. They say it's the strongest earthquake to hit these parts in more than 40 years. But that's not saying very much. "It's probably one of the biggest things that's ever brought newscasts to this little town," laughed Andrea Harper, West Salem resident.
At the First Christian Church, a clock fell off the wall and stopped ticking at 4:37 a.m. Pieces of plaster littered the 96-year-old church, and cracks dotted the walls. "I've been through several earthquakes in Illinois and Tennessee, but this one was different. It was like God came down and shook it rather than a rumbling thing like it was on a wave. It was a shaking," said Rev. Gary Hall, First Christian Church. In nearby Mount Carmel, store surveillance shows what a 5.2 earthquake can do to shelves full of goods. Sunrise revealed a crumbled chimney and collapsed porch. "The main complaint is pictures off the wall, glass breaking, nothing major. People are shook up more than anything," said Eric Goldsmith, West Salem mayor. Aftershocks continued to remind residents the overnight quake wasn't a dream. One registering 4.6 sent students under their desks, just like they practiced during tornado season. But none of it was powerful enough to shake a local legend they call Cowboy from his mount, or his sleep. "The first one hit, and it shook some stuff off our house," said Chickie "Cowboy" Weisenbuger. Residents were being told they can expect aftershocks for the next couple of days, maybe even a few weeks. But they'll be talking about the big earthquake for years to come. The scientific analysis Northern Illinois University in DeKalb is home to one of the few facilities in the Midwest that has seismographic equipment. Researchers at NIU say in the Midwest when there is an earthquake event, the shock is not absorbed as quickly as it would be in California. Therefore, the shockwaves travel farther distances, which could explain why people well outside Illinois reported feeling the earthquake. A seismograph at NIU is set up to detect ground movement. Usually, that movement is caused by a passing train. But at 4:45 a.m. Friday, the seismograph recorded movement from an earthquake more than 450 miles away.
"I think people felt about 30 seconds, at the most, of shaking. The shaking and the quakes bounce around the Earth and come up again," said geologist Dr. Phillip Carpenter.
For scientists like Dr. Carpenter, Friday was an exciting day.
"The last time we had an earthquake here we felt was in 2004," Carpenter said.
Dr. Carpenter also said rocks shifting below the Earth's surface can send vibrations hundreds of miles away.
"Things move a little bit. They move up and down or back and forth. When that happens, it sends out shockwaves, which, eventually, we feel as earthquake waves," Dr. Carpenter said.
He also said the underground movement happened along what is called the Wabash Fault.
"They build up slowly along a weak zone. It gets to a point where the weak zone can no longer support the stress, and it snaps. And that's when you get an earthquake," said Carpenter.
Dr. Carpenter said incidents like Friday's earthquake give credence for more research about earthquakes in the Midwest. He said they haven't been studied nearly as much as some of the quakes on the West Coast. But he said incidents like Friday's are important to study and understand how, if there was a big earthquake, it would affect residents in the Chicago area and areas south and north.
"It shook our house where it woke me up," David Behm of Philo, 10 miles south of Champaign, said of the quake. "Windows were rattling, and you could hear it. The house was shaking inches. For people in central Illinois, this is a big deal. It's not like California."
In Mount Carmel, a woman was trapped in her home by a collapsed porch but was quickly freed and wasn't hurt, said Mickie Smith, a dispatcher at the police department. The department took numerous other calls, though none reported anything more serious than objects knocked off walls and out of shelves, she said.
Also in Mount Carmel, a two-story apartment building was evacuated because of loose and falling bricks. Police cordoned off the building, a 1904 school converted to residences.
Bonnie Lucas, a morning co-host at WHO-AM in Des Moines, said she was sitting in her office when she felt her chair move. She grabbed her desk, and then heard the ceiling panels start to creak. The shaking lasted about five seconds, she said.
The early morning quake rattled a large swath of the nation.
"This was widely felt, all the way to Atlanta, a little bit in Michigan," said USGS geophysicist Carrieann Bedwell.
Phones started ringing at the Crawford County Sheriff's Department in Robinson, about 15 miles north of the epicenter, but there were no immediate reports of damage, dispatcher Marsha Craven said.
"They didn't know if it was the refinery blowing up or an earthquake," she said, referring to the a local petroleum refinery.
In Cincinnati, Irvetta McMurtry said she felt the rattling for up to 20 seconds.
"All of a sudden, I was awakened by this rumbling shaking," said McMurtry, 43. "My bed is an older wood frame bed, so the bed started to creak and shake, and it was almost like somebody was taking my mattress and moving it back and forth."
Lucas Griswold, a dispatcher in West Salem, said the Edwards County sheriff's department received reports of minor damage and no injuries.
"Oh, yeah, I felt it. It was interesting," Griswold said. "A lot of shaking."
There were very few reports of damage in West Salem, a small town dotted by brick buildings and ranch-style homes in the middle of farm country.
"We're very thankful we had no one injured," said Harvey Fenton, West Salem's police and fire chief.
Fenton was asleep in his house when the earthquake hit.
"A major shaking is the best way I can describe it," said Fenton, 58, who wasn't sure what to make of the sudden rumbling, thinking it was thunder or perhaps an explosion.
In Louisville, Ky., the quake caused some bricks to fall off a building near downtown. Television video showed them strewn in the street.
The quake shook skyscrapers in downtown Indianapolis, about 160 miles northeast of the epicenter, and in Chicago's Loop, 230 miles north of the epicenter.
Chicago officials were checking structures downtown to ensure there was no damage.
On the Edens Expressway near Chicago, a rebar pushed up from the pavement Friday morning and "flattened a few tires," said Illinois State Police spokesman Lt. Scott Compton, but it was unclear whether the quake had caused the expressway damage.
The strongest earthquake on record with an epicenter in Illinois occurred in 1968, when a 5.3-magnitude temblor was recorded about 75 miles southeast of St. Louis, according the USGS. The damage was minor but widespread and there were no serious injuries.
In 1811 and 1812, the New Madrid fault produced a series of earthquakes estimated at magnitude 7.0 or greater said to be felt as far away as Boston. They were centered in the Missouri town of New Madrid (pronounced MAD rid), 140 miles southeast of St. Louis.
Experts say that with the much higher population in the Midwest, another major quake along the New Madrid fault zone could destroy buildings, bridges, roads and other infrastructure, disrupt communications and isolate areas.
The Associated Press contributed to this report.
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