Shiloh
Editor, Senior Moderator
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb0001lpu.php
Magnitude 4.7 - ARKANSAS
2011 February 28 05:00:50 UTC
Magnitude 4.7
Date-Time
* Monday, February 28, 2011 at 05:00:50 UTC
* Sunday, February 27, 2011 at 11:00:50 PM at epicenter
Location 35.265?N, 92.340?W
Depth 7.8 km (4.8 miles) (poorly constrained)
Region ARKANSAS
Distances
* 6 km (4 miles) NE (48?) from Greenbrier, AR
* 7 km (4 miles) S (184?) from Guy, AR
* 10 km (6 miles) SE (127?) from Twin Groves, AR
* 59 km (37 miles) N (359?) from Little Rock, AR
* 418 km (260 miles) SSW (207?) from St. Louis, MO
Location Uncertainty horizontal +/- 1 km (0.6 miles); depth +/- 11.4 km (7.1 miles)
Parameters NST=113, Nph=124, Dmin=5.6 km, Rmss=1.48 sec, Gp= 40?,
M-type=regional moment magnitude (Mw), Version=8
Source
* U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver
Event ID usb0001lpu
Magnitude 4.7 - ARKANSAS
2011 February 28 05:00:50 UTC
Magnitude 4.7
Date-Time
* Monday, February 28, 2011 at 05:00:50 UTC
* Sunday, February 27, 2011 at 11:00:50 PM at epicenter
Location 35.265?N, 92.340?W
Depth 7.8 km (4.8 miles) (poorly constrained)
Region ARKANSAS
Distances
* 6 km (4 miles) NE (48?) from Greenbrier, AR
* 7 km (4 miles) S (184?) from Guy, AR
* 10 km (6 miles) SE (127?) from Twin Groves, AR
* 59 km (37 miles) N (359?) from Little Rock, AR
* 418 km (260 miles) SSW (207?) from St. Louis, MO
Location Uncertainty horizontal +/- 1 km (0.6 miles); depth +/- 11.4 km (7.1 miles)
Parameters NST=113, Nph=124, Dmin=5.6 km, Rmss=1.48 sec, Gp= 40?,
M-type=regional moment magnitude (Mw), Version=8
Source
* U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver
Event ID usb0001lpu