Re: Another Earthquake in Illinois

[Guest guest]

I wonder if what I'm feeling are small earthquakes every once in a

while. A slight movement which I always assumed was a truck or plane

going by but I didn't hear same.

>

> We had another about a year and a half ago. I did not feel this

one,

> unfortunately.

>

> http://earthquake.usgs.gov/recenteqsUS/Quakes/nmhwb0102c.htm

>

> A minor earthquake occurred at 21:48:57 (UTC) on Monday, January 2,

> 2006. The magnitude 3.6 event has been located in ILLINOIS. The

> hypocentral depth was estimated to be 40 km (25 miles). (This event

> has been reviewed by a seismologist.)

>

> Magnitude 3.6

> Date-Time Monday, January 2, 2006 at 21:48:57 (UTC)

> = Coordinated Universal Time

> Monday, January 2, 2006 at 3:48:57 PM

> = local time at epicenter

>

> Location 37.790°N, 88.290°W

> Depth 39.8 km (24.7 miles)

> Region ILLINOIS

> Distances 3 km (2 miles) WSW (251°) from Ridgway, IL

> 8 km (5 miles) NE (39°) from Equality, IL

> 9 km (5 miles) NNW (329°) from Junction, IL

> 57 km (35 miles) E (83°) from n, IL

> 68 km (42 miles) WSW (252°) from ville, IN

> 194 km (121 miles) ESE (118°) from St. Louis, MO

>

> Location Uncertainty horizontal +/- 0.5 km (0.3 miles); depth +/-

> 0.7 km (0.4 miles)

> Parameters Nst= 14, Nph= 15, Dmin=38 km, Rmss=0.38 sec, Gp= 68°,

> M-type= " Nuttli " surface wave magnitude (MLg), Version=7

> Source ative New Madrid Seismic Network

>

> Event ID nmhwb0102c

>

> EARTHQUAKES IN THE ILLINOIS BASIN - OZARK DOME REGION

>

> This large region borders the much more seismically active New

> Madrid seismic zone on the seismic zone's north and west. The

> Illinois basin - Ozark dome region covers parts of Indiana,

> Kentucky, Illinois, Missouri, and Arkansas and stretches from

> Indianapolis and St. Louis to Memphis. Moderately frequent

> earthquakes occur at irregular intervals throughout the region. The

> largest historical earthquake in the region (magnitude 5.4) damaged

> southern Illinois in 1968. Moderately damaging earthquakes strike

> somewhere in the region each decade or two, and smaller earthquakes

> are felt about once or twice a year. In addition, geologists have

> found evidence of eight or more prehistoric earthquakes over the

> last 25,000 years that were much larger than any observed

> historically in the region.

>

> Earthquakes in the central and eastern U.S., although less frequent

> than in the western U.S., are typically felt over a much broader

> region. East of the Rockies, an earthquake can be felt over an area

> as much as ten times larger than a similar magnitude earthquake on

> the west coast. A magnitude 4.0 eastern U.S. earthquake typically

> can be felt at many places as far as 100 km (60 mi) from where it

> occurred, and it infrequently causes damage near its source. A

> magnitude 5.5 eastern U.S. earthquake usually can be felt as far as

> 500 km (300 mi) from where it occurred, and sometimes causes damage

> as far away as 40 km (25 mi).

>

[Guest guest]

http://earthquake.usgs.gov/recenteqs/

You can go here to check if you live in the US. Just click on your

state.

Tom

Administrator

I wonder if what I'm feeling are small earthquakes every once in a

while. A slight movement which I always assumed was a truck or plane

going by but I didn't hear same.

[Guest guest]

>Through Tom: "A minor earthquake occurred ........ in ILLINOIS.""Shake, Rattle, and Roll"  Rainbow

[Guest guest]

Hmm, I live about 2-3 hours from one that happened last week. And

last week was when I felt it, I think. I'll have to check this chart

when I sense it and see if there's a pattern. Thanks.

>

> I wonder if what I'm feeling are small earthquakes every once in a

> while. A slight movement which I always assumed was a truck or plane

> going by but I didn't hear same.

>