Recent Earthquakes in Central US
== PRELIMINARY EARTHQUAKE REPORT ==Cooperative New Madrid Seismic Network
Version #A: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.
A micro earthquake occurred at 9:33:20 AM (CDT) on Friday, July 31, 2009
.
The magnitude 2.2 event occurred 10 km (7 miles) ESE of Marquand, MO .
The hypocentral depth is 17 km (10 miles).
| Magnitude | 2.2 - duration magnitude (Md) |
|---|---|
| Time | Friday, July 31, 2009 at 9:33:20 AM (CDT)
Friday, July 31, 2009 at 14:33:20 (UTC) |
| Distance from | Marquand, MO - 10 km (7 miles) ESE (118 degrees) Sedgewickville, MO - 20 km (13 miles) SW (223 degrees) Cobalt Village, MO - 27 km (17 miles) SE (132 degrees) Saint Charles, MO - 160 km (99 miles) SSE (167 degrees) |
| Coordinates | 37 deg. 23.1 min. N (37.384N), 90 deg. 3.8 min. W ( 90.064W) |
| Depth | 16.7 km (10.4 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst= 14, Nph= 15, Dmin=58 km, Rmss=0.11 sec, Erho=2.1 km, Erzz=2.9 km, Gp=165.6 degrees |
| Event ID# | nmhnw0731b |
| Additional Information | map |
For more information, see http://folkworm.ceri.memphis.edu/