• 10 Feb 2022 16:25:02 PST, (34.417, -119.132), depth 18.7km.
• 10km NW of Santa Paula, California

Aftershocks

• As of 11 Feb 2022, 10:05AM PST, there have been 8 aftershocks recorded.
• The largest was M2.6 (smallest M1.4).
• More aftershocks 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.

Possible Foreshocks

• There were 3 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M2.2 (2022/02/10).

Historical Seismicity

• Since our records began in 1932 we’ve had 5 events of M4 or greater within 10km of today’s event.
• The largest historic event was M4.3 on 1954/11/17.
• The most recent historic event was M4.1 on 12 Mar 2016.

Faults

• CFM fault associations: most likely Not associated with a CFM modeled fault (62%). Alternates: Southern San Cayetano; Ventura segment (25%), Other CFM faults (13%).*
• Nearby faults: Sisar fault zone (Big Canyon fault) (1.5 km), Lion Canyon fault (1.5 km), Sisar fault zone (Sisar fault) (1.5 km), San Cayetano fault (1.8 km), Mission Ridge fault system, Santa Ana section (Santa Ana fault) (4.4 km), Oak Ridge fault (6.3 km), Sisar fault (6.8 km), faults of Orcutt and Timber Canyons (Orcutt fault) (7.7 km), Faults near Oakview and Meiners Oaks (La Vista fault) (10.0 km), faults of Orcutt and Timber Canyons (Culbertson fault) (10.4 km), faults near Oakview and Meiners Oaks (Villanova fault) (11.0 km), faults near Oakview and Meiners Oaks (Devils Gulch fault) (11.8 km), Santa Ynez fault zone, eastern section (12.6 km) and faults near Oakview and Meiners Oaks (Oak View fault) (12.7 km).**

Additional Information

• Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
• Visit our special reports page for further information on local notable earthquakes.
• Visit scedc.caltech.edu to access any data recorded by the SCSN.

Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.

• 12 Jan 2022 19:19:08 PST, (33.472, -116.445), depth 13.9km.
• 23km ESE of Anza, California

Aftershocks

• As of 13 Jan 2022, 07:14AM PST, there have been 95 aftershocks recorded.
• The largest was M2.9 (smallest M0.2).
• More aftershocks 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.

Possible Foreshocks

• There were 3 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M0.8 (2022/01/13).

Historical Seismicity

• Since our records began in 1932 we’ve had 40 events of M4 or greater within 10km of today’s event.
• The largest historic event was M6.0 on 1937/03/25.
• The most recent historic event was M4.9 on 04 Apr 2020.

Faults

• CFM fault associations: most likely Clark fault; south segment (52%). Alternates: Not associated with a CFM modeled fault (4%), Other CFM faults (44%).*
• Nearby faults: San Jacinto fault zone, Anza section (Clark fault) (1.4 km), San Jacinto fault zone, Anza section (Buck Ridge fault) (2.5 km), San Jacinto fault zone, Anza section (2.7 km), San Jacinto fault zone, Coyote Creek section (5.2 km) and San Jacinto fault zone, Coyote Creek section (Coyote Creek fault) (5.5 km).**
  

Additional Information

• Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
• Visit our special reports page for further information on local notable earthquakes.
• Visit scedc.caltech.edu to access any data recorded by the SCSN.

Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed.

• 01 Oct 2021 18:42:20 PDT, (35.070, -118.322), depth 2.7km.
• 14km W of Mojave, California

Aftershocks

• As of 03 Oct 2021, 08:50PM PDT, there have been 2 aftershocks recorded.
• The largest was M1.1 (smallest M1.0).
• More aftershocks 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 10 events of M4 or greater within 10km of today’s event.
• The largest historic event was M5.2 on 1952/07/21.
• The most recent historic event was M4.1 on 31 Dec 1995.

Faults

• CFM fault associations: most likely Garlock fault (92%). Alternates: Not associated with a CFM modeled fault (8%).*
• Nearby faults: Garlock fault zone, western Garlock section (Garlock fault, South Branch) (1.3 km).**

Additional Information

• 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.

• 18 Aug 2021 14:45:14 PDT, (33.073, -115.960), depth 7.1km.
• 18km ESE of Ocotillo Wells, California

Aftershocks

• As of 18 Aug 2021, 04:10PM PDT, there have been 5 aftershocks recorded.
• The largest was M3.8 (smallest M1.5).
• More aftershocks 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.

Possible Foreshocks

• There were 13 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M2.8 (2021/08/18).

Historical Seismicity

• Since our records began in 1932 we’ve had 68 events of M4 or greater within 10km of today’s event.
• The largest historic event was M6.6 on 1987/11/24.
• The most recent historic event was M4.5 on 10 May 2020.

Faults

• CFM fault associations: most likely Extra fault (60%). Alternates: Not associated with a CFM modeled fault (12%), Other CFM faults (28%).*
• Nearby faults: San Jacinto fault zone, Borrego Mountain section (Coyote Creek fault) (5.3 km), San Jacinto fault zone, Superstition Mountain section (fault) (7.0 km), San Jacinto fault zone, Superstition Hills section (7.7 km), San Jacinto fault zone, Superstition Hills section (Kane Spring fault) (9.5 km), San Jacinto fault zone, Superstition Hills section (Elmore Ranch fault) (11.3 km), San Jacinto fault zone, Superstition Hills section (Superstition Hills flt) (11.3 km), San Jacinto fault zone, Superstition Hills section (East Elmore Ranch fault) (11.8 km), San Jacinto fault zone, Superstition Hills section (West Elmore Ranch fault) (13.1 km) and San Jacinto fault zone, Superstition Hills section (Lone Tree fault) (14.8 km).**

Additional Information

• 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.

• Largest event: M5.3, 05 Jun 2021 10:55:58 PDT, (33.140, -115.635), depth 5.8km. 11km W of Calipatria, California.
• As of 07 Jun 2021, 03:30PM PDT, the following event numbers have been recorded in the swarm:
• M≥5: 1
• M≥4: 5
• M≥3: 34
• M≥2: 292
• All M5 events recorded:
• M 5.3 05 Jun 2021 10:55:58 PDT, (33.140, -115.635), 39919392

Swarm Numbers

• As of 07 Jun 2021, 03:30PM PDT, we have recorded 1004 events in the swarm (within a 20 km radius, and counting 5 days before the largest event). The smallest event is magnitude 0.5. Many of the smaller events are still being analyzed and will be gradually added to the catalogue.
• More activity is expected in the next few days, swarm activity in Southern California can continue for hours, days, weeks, months or years. For more information on swarms please see our Swarm page.

Historical Seismicity

• Since our records began in 1932 we’ve had 110 events of M4 or greater within 10km of today’s event.
• The largest historic event was M6.2 on 1987/11/24.
• The most recent historic event was M4.0 on 05 Jun 2021.

Faults

• CFM fault associations: most likely Westmorland fault; main segment (94%). Alternates: Not associated with a CFM modeled fault (3%), Other CFM faults (3%).*
• Nearby faults: San Jacinto fault zone, Superstition Hills section (Lone Tree fault) (13.9 km) and San Jacinto fault zone, Superstition Hills section (Superstition Hills flt) (14.7 km).**
  

Additional Information

• 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 the M5.3 event, as recorded in our Live Seismograms Feed. Additional waveform data associated with other M3.5+ events in this swarm will be added at a later date.

• 08 Apr 2021 13:51:15 PDT, (35.653, -117.550), depth 8.3km.
• 12km ENE of Ridgecrest, California

Aftershocks

• As of 08 Apr 2021, 02:22PM PDT, there has been 1 aftershock recorded, M1.1.
• Aftershocks 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.

Possible Foreshocks

• There were 16 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M1.8 (2021/04/07).

Historical Seismicity

• Since our records began in 1932 we’ve had 91 events of M4 or greater within 10km of today’s event.
• The largest historic event was M7.1 on 2019/07/06.
• The most recent historic event was M4.3 on 08 Jun 2020.

Faults

• CFM fault associations: most likely Southern Little Lake fault (75%). Alternates: Not associated with a CFM modeled fault (11%), Other CFM faults (14%).*
• Nearby faults: Little Lake fault zone (3.5 km).**

Additional Information

• 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.

• 31 Mar 2021 01:56:25 PDT, (32.390, -115.250), depth 19.2km.
• 7km NW of Delta, B.C., Mexico

Aftershocks

• As of 31 Mar 2021, 03:05AM PDT, there have been 2 aftershocks recorded.
• The largest was M3.1 (smallest M2.1).
• More aftershocks 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 109 events of M4 or greater within 10km of today’s event.
• The largest historic event was M7.2 on 2010/04/04.
• The most recent historic event was M4.0 on 22 Dec 2020.

Faults

• CFM fault associations: most likely Cierro Prieto fault (42%). Alternates: Not associated with a CFM modeled fault (28%), Other CFM faults (30%).*

Additional Information

• Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
• Visit our special reports page for further information on local notable earthquakes.

• Largest event: M3.8, 09 Feb 2021 17:01:15 PST, (33.175, -115.613), depth 3.8km. 11km WNW of Calipatria, California.
• As of 11 Feb 2021, 10:19AM PST, the following event numbers have been recorded in the swarm:
• M≥3: 5
• M≥2: 23
• All M3 events recorded:
• M 3.0 09 Feb 2021 03:51:26 PST, (33.158, -115.633), 39546087
• M 3.8 09 Feb 2021 17:01:15 PST, (33.175, -115.613), 39546863
• M 3.2 09 Feb 2021 17:01:41 PST, (33.172, -115.600), 39546855
• M 3.1 09 Feb 2021 17:25:07 PST, (33.172, -115.608), 39546951
• M 3.8 09 Feb 2021 17:27:09 PST, (33.175, -115.612), 39546975

Swarm Numbers

• As of 11 Feb 2021, 10:33AM PST, we have recorded 111 events in the swarm (within a 20 km radius, and counting 5 days before largest event). The smallest event is magnitude 0.5. Many of the smaller events are still being analyzed and will be gradually added to the catalogue.
• More activity is expected in the next few days, swarm activity in Southern California can continue for hours, days, weeks, months or years. For more information on swarms please see our Swarm page.

Historical Seismicity

• Since our records began in 1932 we’ve had 98 events of M4 or greater within 10km of today’s event.
• The largest historic event was M6.2 on 1987/11/24.
• The most recent historic event was M4.0 on 04 Jan 2021.

Faults

• CFM fault associations: most likely Not associated with a CFM modeled fault (38%). Alternates: Elmore Ranch fault (28%), Other CFM faults (34%).*

Additional Information

• 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 the M3.8 at 17:01 PST 09/02/2021, as recorded in our Live Seismograms Feed.

• Largest event: M4.9, 30 Sep 2020 17:31:27 PDT, (33.057, -115.590), depth 11.5km. 4km NE of Westmorland, California
• As of 01 Oct 2020, 05:54AM PDT, the following events have been recorded in the swarm:
• M≥4: 6
• M≥3: 54
• M≥2: 270
• Other M4 events recorded:
• Ml 4.0 Oct 1, 2020 03:37:04UTC 33.052, -115.575 ci37456405
• Mw 4.5 Oct 1, 2020 03:36:34UTC 33.068, -115.597 ci39643328
• Mw 4.1 Oct 1, 2020 01:10:25UTC 33.049, -115.592 ci39641880
• Mw 4.1 Oct 1, 2020 00:58:13UTC 33.065, -115.593 ci39641768
• Mw 4.2 Oct 1, 2020 00:41:18UTC 33.073, -115.601 ci39641616

Swarm Numbers

• There were 96 events during the 3 days prior to the M4.9 (within a 10 km radius). As of 01 Oct 2020, 01:37PM PDT, there have been 632 events recorded after the M4.9.
• The SCSN has so far recorded over 700 events in the swarm, the smallest M1.1. Many of the smaller events are still being analyzed and will be gradually added to the catalogue.
• More activity is expected in the next few days. 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 112 events of M4 or greater within 10km of today’s event.
• The largest historic event was M6.2 on 1987/11/24.
• The most recent historic event was M4.3 on 30 Sep 2020.
• Similar swarms in this area have been recorded in 1981 and 2012 with similar/same sense of motion and maximum magnitudes within the M5 range. For more informtation about the 2012 swarm visit M5.5 Brawley Swarm.

Faults

• CFM fault associations: most likely Westmorland fault; splay segment (94%). Alternates: Not associated with a CFM modeled fault (4%), Other CFM faults (2%).*
• Nearby faults: Imperial fault (13.8 km).**

Additional Information

• Links for: USGS earthquake page, ShakeMap, DYFI, waveforms.
• Visit our special reports page for further information on local notable earthquakes.
• Visit our SoCal swarms page for general information on local swarm monitoring.

Below are the waveform data associated with this event, as recorded in our Live Seismograms Feed. Note that a M2.7 event is visible for the first 36 seconds before the M4.9 is detected. More videos of the swarm will be available soon.