M1.8 - 22km NNE of Morrilton, Arkansas (BETA) 2013-12-19 22:00:43 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 35.342°N, 92.669°W ± 1.6 km
Depth 4.0 km ± 7.7 km
Number of Stations Used 10
Number of Phases Used 16
Minimum Distance 11.0 km (0.10°)
Travel Time Residual 0.09 sec
Azimuthal Gap 130°
Review Status MANUAL
Event ID nm122013a
See the “Contributed Solutions” for a list of all contributed location parameters.

Contributed Solutions