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Illinois continues to shake
Four more
tremors registered since Friday, ranging 2.7 to 4.0 magnitude
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[April 21, 2008]
Concern for infrastructure is
mounting since the first earthquake with its epicenter in southeast
Illinois shook early Friday morning. The first quake, which measured
the highest at 5.2 on the Richter scale, has been followed by eight
more shocks, continuing as recently as just past midnight this
morning. The smaller quakes have ranged from 2.5 magnitude to this
morning's 4.0.
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Details of those quakes from Monday morning back
through Saturday are below: Earthquake details
12:38:29 a.m. Monday
4.0 magnitude
Location: 38.483°N, 87.857°W
Depth: 10 km (6.2 miles) set by
location program
Distances:
-
11 km (7 miles) NW
(315°) from Mount Carmel, Ill.
-
12 km (7 miles) NNE
(23°) from Bellmont, Ill.
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13 km (8 miles) ENE
(72°) from Bone Gap, Ill.
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62 km (39 miles) NNW
(335°) from Evansville, Ind.
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208 km (129 miles) E (94°) from St.
Louis, Mo.
Location uncertainty: Horizontal +/- 4.1 km (2.5 miles); depth
fixed by location program
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12:02:42 a.m. Sunday
2.8 magnitude
Location: 38.440°N, 87.850°W
Depth: 16.3 km (10.1 miles)
Distances:
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8 km (5 miles) NE
(40°) from Bellmont, Ill.
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8 km (5 miles) WNW
(291°) from Mount Carmel, Ill.
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10 km (6 miles) N
(9°) from Keensburg, Ill.
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58 km (36 miles) NNW
(333°) from Evansville, Ind.
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209 km (130 miles) E (95°) from St.
Louis, Mo.
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11:55:17 a.m. Saturday
2.8 magnitude
Location: 38.440°N, 87.900°W
Depth: 14.9 km (9.3 miles)
Location:
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6 km (4 miles) N (8°)
from Bellmont, Ill.
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8 km (5 miles) E
(95°) from Bone Gap, Ill.
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10 km (6 miles) NE
(46°) from Browns, Ill.
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60 km (37 miles) NNW
(329°) from Evansville, Ind.
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205 km (127 miles) E (95°) from St.
Louis, Mo.
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10:05:53 p.m. Friday
2.7 magnitude
Location: 38.440°N, 87.890°W
Depth: 14.1 km (8.8 miles)
Location:
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6 km (4 miles) NNE
(15°) from Bellmont, Ill.
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9 km (6 miles) E
(95°) from Bone Gap, Ill.
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10 km (6 miles) N
(349°) from Keensburg, Ill.
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59 km (37 miles) NNW
(330°) from Evansville, Ind.
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206 km (128 miles) E (95°) from St.
Louis, Mo.
[By JAN YOUNGQUIST]
Earthquake
Awareness and Preparedness Guide
[To download Adobe Acrobat Reader for
the PDF file, click
here.]
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