Quake action continues to rattle Illinois

[April 18, 2008]  An early morning earthquake measuring 5.2 on the Richter scale was centered near the eastern border of southern Illinois. The quake was the first of five recorded shakings since 4:37 a.m. Friday. The first and the most recent, which measured 4.5 magnitude at 10:14 a.m., were felt in Lincoln.

Here in Logan County, stories have already begun to circulate from those who were awake at 4:37 a.m. or are light sleepers. They felt and heard things that rattle, or bump easily, as the tremor rolled through. Dogs and cats are said to have also responded to the unusual disturbance.

Cheryl Hedrick from the Logan County Emergency Management Agency said that there have been no reports of damage so far. Locally, officials and building superintendents were checking structures this morning such as the Logan County Courthouse dome and attic for damage.

The intensity level of the tremors as they reached here in Logan County was not believed to be sufficient to warrant concern about bridges or other infrastructure damage.

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4:37 a.m. earthquake details

5.2 magnitude

Location: 38.450°N, 87.890°W

Depth: 7.2 miles

Distances:

• 7 km (5 miles) NNE (13°) from Bellmont, Ill.

• 9 km (6 miles) E (88°) from Bone Gap, Ill.

• 11 km (7 miles) N (350°) from Keensburg, Ill.

• 60 km (38 miles) NNW (331°) from Evansville, Ind.

• 206 km (128 miles) E (95°) from St. Louis, Mo.

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5:04 a.m. earthquake details

2.5 magnitude

Depth: 6.2 miles

Location uncertainty horizontal +/- 5.8 miles; depth fixed by location program

Distances:

• 5 km (3 miles) NW (323°) from Mount Carmel, Ill.

• 12 km (7 miles) NE (50°) from Bellmont, Ill.

• 12 km (7 miles) SW (224°) from Allendale, Ill.

• 57 km (36 miles) NNW (337°) from Evansville, Ind.

• 213 km (132 miles) E (94°) from St. Louis, Mo.

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5:15 a.m. earthquake details

2.5 magnitude

Location: 38.648°N, 88.222°W

Depth: 10 km (6.2 miles) set by location program

Distances:

• 6 km (4 miles) S (179°) from Noble, Ill.

• 12 km (8 miles) ESE (111°) from Clay City, Ill.

• 15 km (10 miles) SW (233°) from Olney, Ill.

• 95 km (59 miles) NW (322°) from Evansville, Ind.

• 176 km (109 miles) E (89°) from St. Louis, Mo.

6:55 a.m. earthquake details

2.6 magnitude

Depth: 6.2 miles

Location: 38.465°N, 87.854°W

Distances:

• 9 km (6 miles) NW (307°) from Mount Carmel, Ill.

• 10 km (6 miles) NNE (28°) from Bellmont, Ill.

• 13 km (8 miles) E (81°) from Bone Gap, Ill.

• 60 km (38 miles) NNW (334°) from Evansville, Ind.

• 208 km (130 miles) E (94°) from St. Louis, Mo.

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10:14 a.m. earthquake details

4.5 magnitude

Depth: 6.2 miles

Location: 38.539°N, 87.865°W

Distances:

• 13 km (8 miles) E (81°) from West Salem, Ill.

• 14 km (8 miles) W (275°) from Allendale, Ill.

• 15 km (10 miles) NE (48°) from Bone Gap, Ill.

• 68 km (42 miles) NNW (336°) from Evansville, Ind.

• 207 km (129 miles) E (92°) from St. Louis, Mo.

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See map highlighting areas most affected.

U.S. Geological Survey, National Earthquake Information Center

World Data Center for Seismology, Denver

To find more details and keep up with any further recorded information, you can go to the U.S. Geological Survey earthquake site.

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