09/18/2017, M3.6 near Westwood

Last updated October 4th, 2019

  • 18 Sep 2017 23:20:44 PDT, (34.087, -118.475), depth 10.5km, 5km NW of Westwood, California
  • Aftershocks: so far (19 Sep 2017, 07:09AM PDT) there has been 1 aftershock recorded, M2.0. More may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. There is a small chance (about 5%) that a larger quake could occur, with the likelihood decreasing over time.
  • Historical seismicity: since our records began in 1932 we’ve had 4 events of M4 or greater within 10km of today’s event, the largest was M4.5 (1994/01/19) and the most recent was M4.2 on 02 Jun 2014.
  • Nearby faults: Santa Monica fault (4.7 km), Hollywood fault (6.0 km), Newport-Inglewood-Rose Canyon fault zone, north Los Angeles basin section (10.8 km), Santa Monica fault (offshore) (11.5 km), Charnock fault (12.3 km) and Palos Verdes fault zone, Santa Monica Basin section (Palos Verdes fault) (13.7 km).
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.

Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.The closest stations represented in the feed are CI.DJJ and CI.RPV at 2.9m and 38.7m away from the epicenter respectively.

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