SCSNM3.8 – SCSN http://www.scsn.org Southern California Seismic Network Fri, 09 Nov 2018 22:11:55 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.2 11/09/2018, M3.8 near Aguanga ../../../../index.php/2018/11/09/11-09-2018-m3-8-near-aguanga/ ../../../../index.php/2018/11/09/11-09-2018-m3-8-near-aguanga/#respond Fri, 09 Nov 2018 15:25:56 +0000 http://www.scsn.org/?p=3032 ]]>
  • Two events above M3.5 have occurred in the ongoing Cahuilla swarm:
    • 09 Nov 2018 06:45:50 PST, (33.483, -116.802), depth 2.0km, 7km NE of Aguanga, California
    • 09 Nov 2018 06:58:09 PST, (33.485, -116.803), depth 1.1km, 7km NE of Aguanga, California
  • Aftershocks: so far (09 Nov 2018, 02:04PM PST) there have been 87 aftershocks recorded since the second, larger event, the largest M2.0 (smallest M0.1). 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.
  • There were 91 events during the 3 days prior to the earthquake (within a 10 km radius), the largest was the M3.7 (2018/11/09).
  • Historical seismicity: since our records began in 1932 we’ve had 14 events of M4 or greater within 10km of today’s event, the largest was M5.6 (2005/06/12) and the most recent was M4.4 on 15 Aug 2018. Since the onset of the Cahuilla swarm in 2016, we have now recorded over 9000 events.
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
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    05/30/2018, M3.8 near Thousand Palms ../../../../index.php/2018/05/30/05-30-2018-m3-8-near-thousand-palms/ ../../../../index.php/2018/05/30/05-30-2018-m3-8-near-thousand-palms/#respond Wed, 30 May 2018 19:35:31 +0000 http://www.scsn.org/?p=2783 ]]>
  • 30 May 2018 12:22:05 PDT, (33.924, -116.323), depth 9.5km, 13km NNE of Thousand Palms, California
  • Aftershocks: so far (30 May 2018, 12:33PM PDT) there have been 2 aftershocks recorded, the largest M1.2 (smallest M0.9). 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.
  • There were 1 events during the 3 days prior to the earthquake (within a 10 km radius), the largest was M0.6 (2018/05/30).
  • Historical seismicity: since our records began in 1932 we’ve had 88 events of M4 or greater within 10km of today’s event, the largest was M6.1 (1992/04/23) and the most recent was M4.0 on 06 Aug 2010.
  • Nearby faults: unnamed Fault in the Little San Bernardino Mountains (1.4 km), Blue Cut fault zone (Blue Cut fault) (2.2 km), Eureka Peak fault (5.0 km), San Andreas fault zone, San Bernardino Mountains section (North Branch SAF) (6.6 km), Burnt Mountain fault zone (East Wide Canyon fault) (6.8 km), San Andreas fault zone, San Bernardino Mountains section (6.8 km), Indio Hills fault zone (9.2 km), San Andreas fault zone, San Bernardino Mountains section (South Branch SAF) (9.5 km) and Long Canyon fault (10.9 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 station to the earthquake shown in the view is CI.WWC in Palm Springs at approximately 8km from the epicenter.

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    04/16/2018, M3.8 near Grapevine ../../../../index.php/2018/04/16/04-16-2018-m3-8-near-grapevine/ ../../../../index.php/2018/04/16/04-16-2018-m3-8-near-grapevine/#respond Mon, 16 Apr 2018 17:11:12 +0000 http://www.scsn.org/?p=2675 ]]>
  • 16 Apr 2018 09:36:48 PDT, (35.043, -119.042), depth 7.7km, 15km NW of Grapevine, California.
  • Aftershocks: so far there have been no aftershocks recorded. Some may be expected in the next few days, the largest expected is approximately 1 magnitude unit smaller than the mainshock. The following probability report is based on the statistics of aftershocks typical for California. This is not an exact prediction, but only a rough guide to expected aftershock activity. This probability report may be revised as more information becomes available.
    • STRONG AFTERSHOCKS (Magnitude 5 and larger): at this time (immediately after the mainshock) the probability of a strong and possibly damaging aftershock IN THE NEXT 7 DAYS is less than 10%
    • EARTHQUAKES LARGER THAN THE MAINSHOCK: most likely, the recent mainshock will be the largest in the sequence. However, there is a small chance (APPROXIMATELY 5% TO 10%) of an earthquake equal to or larger than this mainshock in the next 7 days.
    • WEAK AFTERSHOCKS (Magnitude 3 to 5): in addition, up to approximately 2 SMALL AFTERSHOCKS are expected in the same 7-DAY PERIOD and may be felt locally.
  • Historical seismicity: since our records began in 1932 we’ve had 103 events of M4 or greater within 10km of today’s event, the largest was M7.5 (1952/07/21) and the most recent was M4.2 on 22 Sep 2005. Known as the Kern County earthquake, the Mw7.5 event on July 21, 1952 caused widespread damage and was felt across California and Nevada. See the special report on the SCEDC website for more information. Many of the other catalog events in this area are aftershocks of the 1952 Kern County earthquake. The M3.7 earthquake near Bodfish on April 13, 2018, was located approximately 60 km from this event near Grapevine, but is also along the section of fault responsible for the Kern County earthquake.
  • Nearby faults: Wheeler Ridge fault zone (Wheeler Ridge fault) (1.5 km), Pleito fault zone, western Pleito section (Pleito fault) (3.8 km), unnamed faults (1952 earthquake fractures) (4.2 km), Pleito fault zone, eastern Pleito section (Pleito fault) (5.9 km) and Pleito fault zone, western Pleito section (Oak Hill thrust) (13.5 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.

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    01/06/2018, M3.8 near Isla Vista ../../../../index.php/2018/01/07/01062018-m3-8-near-isla-vista/ ../../../../index.php/2018/01/07/01062018-m3-8-near-isla-vista/#respond Sun, 07 Jan 2018 01:43:35 +0000 http://www.scsn.org/?p=2548 ]]>
  • 06 Jan 2018 17:31:10 PST, (34.400, -120.025), depth 2.3km, 15km W of Isla Vista, California
  • Aftershocks: so far there have been no aftershocks recorded. Some 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 M4.8 (2013/05/29) and the most recent was M4.1 on 17 May 2017.
  • Nearby faults: Glen Annie fault (11.1 km) and Mission Ridge fault system, More Ranch section (More Ranch fault) (11.7 km).
  • Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
  • Visit our special reports page for further information on local notable earthquakes.
  • ]]>
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    07/07/2016, M3.8 near Brawley ../../../../index.php/2016/07/07/07072016-m3-8-event-near-brawley/ ../../../../index.php/2016/07/07/07072016-m3-8-event-near-brawley/#respond Thu, 07 Jul 2016 13:44:12 +0000 http://www.scsn.org/?p=1568 ]]>
  • 07 Jul 2016 05:55:24 PDT, (32.912, -115.535), depth 11.1km, 7km S of Brawley, California
  • Aftershocks: so far (08 Jul 2016, 03:18PM PDT) there have been 19 aftershocks recorded, M2.1. 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 45 events of M4 or greater within 10km of today’s event, the largest was M5.8 (1979/10/16) and the most recent was M4.3 on 26 Aug 2012.
  • Nearby faults: Imperial fault (0.5 km), Brawley seismic zone (Brawley fault zone) (5.1 km), Brawley seismic zone (6.3 km), San Jacinto fault zone, Superstition Hills section (Wienert fault) (11.2 km) and San Jacinto fault zone, Superstition Hills section (Superstition Hills flt) (11.8 km).
  • Links for: USGS earthquake page, ShakeMap, DYFI.
  • Visit our special reports page for further information on local notable earthquakes.
  • ]]>
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