4/29/2015 — Midwest Earthquake Unrest — 4.2M earthquake strikes Oklahoma fracking operation

Oklahoma is on the move again (seismically speaking).

A magnitude 4.2 earthquake (4.1 revised) has struck Central Oklahoma near another fracking operation.

oklahoma 4.2m earthquake april 29 2015


The earthquake comes on the heels of other movement earlier in the morning at dormant volcanoes in California / Nevada, and after the area was forecast to begin seeing 4.0M+ earthquakes again (forecast on April 24, 2015).

See the earthquake forecast calling for this movement here:


Information on this 4.2M from the USGS:


Magnitude / uncertainty 4.1 mb_lg± 0.0
Location / uncertainty 36.289°N 97.527°W± 1.1 km
Depth / uncertainty 2.2 km± 7.9
Origin Time 2015-04-29 16:42:26.540 UTC
Number of Stations
Number of Phases 38
Minimum Distance 47.42 km (0.43°)
Travel Time Residual 0.22 sec
Azimuthal Gap 61°
FE Region Oklahoma (499)


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