Juslivn

3.8 Moderate Quake In Our Backyard (USGS Revised 4.3)

By: juslivn, 10:29 PM GMT on January 17, 2010

Yes, my oldest son bolted up to see what he felt at 4:00 this morning.
He thought a huge chunk of snow fell off the roof or the balcony.
Went out into the hallway, looked around for the rumbling...then thought earthquake???
He began googling it...Wow.
Nope, I slept right through it. Like a rock!

Modified by the USGS: Initially thought to be 4.3 centered by Sycamore. Now revised to 3.8 close to Gilberts, IL a bit closer to here.



3.8
Date-Time Wednesday, February 10, 2010 at 09:59:33 UTC
Wednesday, February 10, 2010 at 03:59:33 AM at epicenter
Time of Earthquake in other Time Zones

Location 42.053°N, 88.412°W
Depth 5 km (3.1 miles) set by location program
Region ILLINOIS
Distances 2 km (1 miles) SSE (168°) from Pingree Grove, IL
6 km (4 miles) SW (215°) from Gilberts, IL
9 km (6 miles) WSW (243°) from Sleepy Hollow, IL
10 km (6 miles) W (279°) from Elgin, IL
34 km (21 miles) NNW (344°) from Aurora, IL
65 km (40 miles) WNW (292°) from Chicago, IL

Location Uncertainty horizontal +/- 7.3 km (4.5 miles); depth fixed by location program
Parameters NST= 16, Nph= 16, Dmin=179.1 km, Rmss=0.54 sec, Gp=104°,
M-type=regional moment magnitude (Mw), Version=8
Source USGS NEIC (WDCS-D)


Event ID us2010snay


From Chicago Breaking News Service:
A mild earthquake shook northern Illinois this morning.

The U.S. Geological Survey reported a 4.3-magnitude quake at 3:59:34 a.m. centered about 5.5 miles east of Sycamore and 3.1 miles underground. The epicenter is about 45 miles west of Chicago.

The quake was felt over a wide area, but there were no reports of any damage 90 minutes later, according to the Kane County and DeKalb County sheriff's departments, which are closest to the epicenter.

The nature of the fault activity that caused the quake was unclear, said Amy Vaughan, a geophysicist with the geological survey in Golden, Colo. Past quakes that have affected southern Illinois have been in the Wabash Valley or New Madrid seismic zones.


The fault systems in northern Illinois are not as well understood as those in other regions where earthquakes are more common, and more investigation will be needed to determine the cause of this morning's temblor, Vaughan said.

A 5.2-magnitude earthquake struck near downstate West Salem on April 18, 2008. That quake was the worst to hit Illinois since 1968.


By contrast, the earthquake that leveled Haiti on Jan. 12 registered 7.0 on the Richter Scale, meaning it was about 500 times the magnitude of the one this morning. Many of the numerous aftershocks to hit the island were approximately the same magnitude as the quake that hit near Sycamore today


Prelim Initial Report
4.3
Date-Time Wednesday, February 10, 2010 at 09:59:34 UTC
Wednesday, February 10, 2010 at 03:59:34 AM at epicenter
Time of Earthquake in other Time Zones

Location 41.978°N, 88.597°W
Depth 5 km (3.1 miles) set by location program
Region ILLINOIS
Distances 6 km (4 miles) WNW (292°) from Virgil, IL
8 km (5 miles) E (94°) from Sycamore, IL
8 km (5 miles) N (1°) from Maple Park, IL
14 km (8 miles) ENE (67°) from DeKalb, IL
35 km (22 miles) NW (315°) from Aurora, IL
77 km (48 miles) WNW (282°) from Chicago, IL

Location Uncertainty horizontal +/- 12.8 km (8.0 miles); depth fixed by location program
Parameters NST= 11, Nph= 11, Dmin=171.4 km, Rmss=0.86 sec, Gp=151°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=6
Source USGS NEIC (WDCS-D)


Event ID us2010snay







Updated: 1:34 PM GMT on February 10, 2010

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Seasons In Chicago, Updates and In My Next Life...

By: juslivn, 4:46 AM GMT on January 10, 2010

"Haiti has moved to center of the world's thoughts and the world's compassion," British Prime Minister Gordon Brown.



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Please visit Portlight.org

Link

Updated: 2:16 AM GMT on January 14, 2010

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About juslivn

Located by the Fox River and Chain of Lakes in Northern Il. We boat, fish, love the outdoors, pets, and enjoy life.

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