UPDATE: EPICENTER REVISED.
Last night the USGS reported that a magnitude 2.4 earthquake shook from an epicenter just to the east of George Lake in Bristol, Wisconsin — about 11 miles west-southwest of Kenosha, Wisconsin and about 14 miles northwest of Waukegan at 9:54:43 CST.
Chicago’s north and northwest suburban police departments reported receiving a number of phone calls from residents feeling the quake. No word on any reports to Arlington Heights police, and there are no early reports of injury or damage.
This morning the epicenter has been revised to just east of McHenry.
As of ‘just before midnight’ most personal reports to United States Geological Survey came from McHenry (111), Wauconda (25), Round Lake (12), Fox Lake (11), Cary (9), Antioch (9), Ingleside (7), Woodstock (6), and Barrington (8). Two people reported feeling the earthquake in Arlington Heights. Reports from Wisconsin were in the one-to-two range — much less than Illinois reports.
THIS MORNING’S REVISED REPORT FROM THE USGS …
Tuesday, January 31, 2012 at 03:54:43 UTC
Monday, January 30, 2012 at 09:54:43 PM at epicenter
Time of Earthquake in other Time Zones
Location
42.340°N, 88.243°W
Depth
5.1 km (3.2 miles)
Region
ILLINOIS
Distances
17 km (11 miles) E of Woodstock, Illinois
33 km (20 miles) W of Waukegan, Illinois
73 km (45 miles) NW of Chicago, Illinois
305 km (190 miles) NNE of SPRINGFIELD, Illinois
Location Uncertainty
horizontal +/- 17.6 km (10.9 miles); depth +/- 3.1 km (1.9 miles)
Parameters
NST= 8, Nph= 11, Dmin=177 km, Rmss=0.45 sec, Gp= 97°,
M-type=”Nuttli” surface wave magnitude (mbLg), Version=8
Map of Epicenter of McHenry, IL 2.4 Magnitude Earthquake …
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Last night’s report from United States Geological Survey (USGS) …
Tuesday, January 31, 2012 at 03:54:43 UTC
Monday, January 30, 2012 at 09:54:43 PM at epicenter
Time of Earthquake in other Time Zones
Location
42.526°N, 88.032°W
Depth
9.9 km (6.2 miles)
Region
WISCONSIN
Distances
18 km (11 miles) WSW of Kenosha, Wisconsin
23 km (14 miles) NW of Waukegan, Illinois
82 km (50 miles) NNW of Chicago, Illinois
127 km (78 miles) ESE of MADISON, Wisconsin
Map of Epicenter (defunct) of Bristol, Wisconsin 2.4 Magnitude Earthquake …
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What’s close to the revised epicenter near McHenry?
Johnsburg, Lakemoor, Fox Lake, Round Lake, Round Lake Beach, Ingleside, Wauconda, Woodstock, Volo, Moraine Hills, McCollum Lake, and Pistakee Bog Nature Preserve.
What’s close to the defunct epicenter?
Lake Shangrila, Union Grove, Pleasant Prairie, Winfield Airport, Lake George, and Bristol, Wisconsin.