M1.8 - 22km NNE of Morrilton, Arkansas (BETA) 2013-12-17 13:13:29 UTC


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Location and Magnitude contributed by: New Madrid Seismic Network


Preferred Location Parameters

Parameter Value Uncertainty
Magnitude 1.8 md ± 0.20
Location 35.334°N, 92.651°W ± 1.5 km
Depth 7.7 km ± 2.4 km
Number of Stations Used 9
Number of Phases Used 14
Minimum Distance 10.0 km (0.09°)
Travel Time Residual 0.25 sec
Azimuthal Gap 86°
Review Status MANUAL
Event ID nm121713b
See the “Contributed Solutions” for a list of all contributed location parameters.

Contributed Solutions