SCSNM3.7 – SCSN

03/20/2025, M3.7 near Borrego Springs

Zackary Newman — Thu, 20 Mar 2025 09:01:43 +0000

Event

20 Mar 2025 01:39:05 PDT, (33.302, -116.265), depth 10.7km.
11km ENE of Borrego Springs, California

Aftershocks

As of 20 Mar 2025, 01:55AM PDT, there have been 6 aftershocks recorded.
The largest was M2.0 (smallest M0.9).
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 4 events during the 3 days prior to the earthquake (within a 10 km radius).
The largest was M1.1 (2025/03/19).

Historical Seismicity

Since our records began in 1932 we’ve had 47 events of M4 or greater within 10km of today’s event.
The largest historic event was M6.4 on 1954/03/19.
The most recent historic event was M4.1 on 31 Dec 2022.

Faults

CFM fault associations: most likely Coyote Creek fault (40%). Alternates: Not associated with a CFM modeled fault (11%), Other CFM faults (49%).*
Nearby faults: San Jacinto fault zone, Anza section (3.3 km), San Jacinto fault zone, Anza section (Clark fault) (3.4 km), San Jacinto fault zone, Coyote Creek section (Coyote Creek fault) (3.8 km), San Jacinto fault zone, Coyote Creek section (10.3 km) and San Jacinto fault zone, Borrego Mountain section (Coyote Creek fault) (10.9 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.

*Earthquakes can occur both near or on major known faults, and in places where no clear fault zones are known. Using the statistical method of Evans et al. (in prep. 2019) the location and focal mechanism of this earthquake suggest the above association with modeled faults in the Community Fault Model (CFM) provided by the Southern California Earthquake Center (SCEC) and Harvard University. Note that the CFM fault association may be different from the nearby faults list. Differences may arise due to different fault databases, and because the CFM fault association uses the hypocenter with relation to subsurface 3-dimensional fault orientation models, while the nearby faults list utilizes mapped surface traces as they relate to the epicenter.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

**U.S. Geological Survey and California Geological Survey, 2006, Quaternary fault and fold database for the United States, accessed 2015, from USGS web site: https://earthquake.usgs.gov/hazards/qfaults/

This information is subject to change as more up-to-date data become available.

09/26/2024, M3.7 near Olancha

Zackary Newman — Thu, 26 Sep 2024 18:44:19 +0000

Event

26 Sep 2024 11:24:29 PDT, (36.205, -118.012), depth 0.3km.
9km S of Olancha, California

Aftershocks

As of 26 Sep 2024, 11:40AM PDT, there have been 2 aftershocks recorded.
The largest was M1.7 (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.

Historical Seismicity

Since our records began in 1932 we’ve had 18 events of M4 or greater within 10km of today’s event.
The largest historic event was M4.7 on 1959/01/05.
The most recent historic event was M4.0 on 12 Feb 2021.

Faults

CFM fault associations: most likely Independance; Sierra Nevada fault segment (78%). Alternates: Not associated with a CFM modeled fault (22%).*
Nearby faults: Southern Sierra Nevada fault zone, Haiwee Reservoir section (0.6 km), Owens Valley fault zone, 1872 rupture section (2.0 km) and unnamed faults south side Owens Lake (4.9 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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

This information is subject to change as more up-to-date data become available.

08/11/2024, M3.7 near Little Lake

Zackary Newman — Sun, 11 Aug 2024 16:42:21 +0000

Event

11 Aug 2024 02:45:13 PDT, (35.945, -117.680), depth 5.0km.
20km E of Little Lake, California

Aftershocks

As of 11 Aug 2024, 09:38AM PDT, there have been 14 aftershocks recorded.
The largest was M3.0 (smallest M0.6).
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 11 events during the 3 days prior to the earthquake (within a 10 km radius).
The largest was M2.8 (2024/08/10).

Historical Seismicity

Since our records began in 1932 we’ve had 96 events of M4 or greater within 10km of today’s event.
The largest historic event was M5.5 on 2019/07/06.
The most recent historic event was M4.3 on 23 Aug 2019.

Faults

CFM fault associations: most likely Not associated with a CFM modeled fault (55%). Alternates: Eastern Little Lake fault (29%), Other CFM faults (16%).*
Nearby faults: Unnamed fault near Coso Basin (0.6 km), Wilson Canyon fault (6.2 km), Airport Lake fault zone (7.4 km) and Little Lake fault zone (14.2 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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

This information is subject to change as more up-to-date data become available.

05/18/2024, M3.7 swarm near Brawley

Gabrielle Tepp — Sat, 18 May 2024 18:04:06 +0000

Significant Events

Largest event: M3.7, 18 May 2024 02:36:37 PDT, (32.933, -115.540), depth 11.7km. 5km S of Brawley, California.
As of 20 May 2024, 07:41AM PDT, the following event numbers have been recorded in the swarm:

M≥3: 18
M≥2: 79

All M3 events recorded:

M 3.1 18 May 2024 02:18:35 PDT, (32.930, -115.540), 40589359
M 3.7 18 May 2024 02:36:37 PDT, (32.933, -115.540), 40589407
M 3.0 18 May 2024 03:17:33 PDT, (32.925, -115.533), 40589495
M 3.6 18 May 2024 05:38:00 PDT, (32.932, -115.538), 40589719
M 3.2 18 May 2024 05:38:35 PDT, (32.928, -115.542), 40589727
M 3.5 18 May 2024 05:41:52 PDT, (32.937, -115.537), 40589751
M 3.7 18 May 2024 08:52:13 PDT, (32.937, -115.537), 40590231
M 3.5 18 May 2024 09:30:18 PDT, (32.937, -115.533), 40590383
M 3.8 18 May 2024 12:17:22 PDT, (32.930, -115.543), 40590759
M 3.4 18 May 2024 12:46:17 PDT, (32.930, -115.542), 40590799
M 3.0 18 May 2024 14:23:17 PDT, (32.905, -115.535), 40590943
M 3.5 18 May 2024 15:58:19 PDT, (32.922, -115.543), 40591047
M 3.9 18 May 2024 16:05:05 PDT, (32.935, -115.543), 40591055
M 3.4 18 May 2024 16:05:31 PDT, (32.923, -115.550), 40591063
M 3.1 18 May 2024 16:06:34 PDT, (32.930, -115.545), 40591079
M 3.7 18 May 2024 16:13:26 PDT, (32.933, -115.535), 40591087
M 3.3 18 May 2024 16:24:09 PDT, (32.928, -115.535), 40591119
M 3.1 20 May 2024 01:43:27 PDT, (32.922, -115.533), 40593359

Swarm Numbers

As of 20 May 2024, 07:41AM PDT, we have recorded 264 events in the swarm (within a 20 km radius, and counting 5 days before the largest event). The smallest event is magnitude 0.9. 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 116 events of M4 or greater within 10km of today’s event.
The largest historic event was M6.9 on 1940/05/19.
The most recent historic event was M4.6 on 12 Feb 2024.

Faults

CFM fault associations: most likely Imperial fault; east strand segment (46%). Alternates: Not associated with a CFM modeled fault (7%), Other CFM faults (47%).*
Nearby faults: Imperial fault (0.4 km), Brawley seismic zone (Brawley fault zone) (5.6 km), Brawley seismic zone (8.4 km), San Jacinto fault zone, Superstition Hills section (Superstition Hills flt) (11.8 km) and San Jacinto fault zone, Superstition Hills section (Wienert fault) (11.9 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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

12/05/2023, M3.7 near Ocotillo

Zackary Newman — Tue, 05 Dec 2023 20:36:14 +0000

Event

05 Dec 2023 20:30:22 PST, (32.737, -115.878), depth 9.3km.
11km E of Ocotillo, California

Aftershocks

As of 09 Jan 2024, 12:36PM PST, there have been 38 aftershocks recorded.
The largest was M2.0 (smallest M0.3).
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 25 events during the 3 days prior to the earthquake (within a 10 km radius).
The largest was M3.4 (2023/12/06).

Historical Seismicity

Since our records began in 1932 we’ve had 55 events of M4 or greater within 10km of today’s event.
The largest historic event was M5.7 on 2010/06/15.
The most recent historic event was M4.8 on 01 Dec 2023.

Faults

CFM fault associations: most likely Yuha Well fault (61%). Alternates: Other CFM faults (39%).*
Nearby faults: Yuha Wells fault (1.2 km), Elsinore fault zone, Laguna Salada section (Laguna Salada fault) (4.1 km), Elsinore fault zone, Laguna Salada section (4.9 km), unnamed faults north of Coyote Wash (10.4 km), unnamed faults in Davies Valley (13.5 km) and Elsinore fault zone, Coyote Mountain section (Elsinore fault) (14.1 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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

This information is subject to change as more up-to-date data become available.

10/15/2023, M3.7 near Ojai

Zackary Newman — Sun, 15 Oct 2023 20:49:46 +0000

Event

15 Oct 2023 12:50:16 PDT, (34.563, -119.137), depth 7.0km.
16km NE of Ojai, California

Aftershocks

As of 15 Oct 2023, 01:43PM PDT, there have been 2 aftershocks recorded.
The largest was M3.5 (smallest M1.3).
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 7 events of M4 or greater within 10km of today’s event.
The largest historic event was M5.1 on 2023/08/20.
The most recent historic event was M5.1 on 20 Aug 2023.

Faults

CFM fault associations: most likely Southern San Cayetano; Ventura segment (60%). Alternates: Not associated with a CFM modeled fault (19%), Other CFM faults (21%).*
Nearby faults: Pine Mountain fault (1.7 km), Santa Ynez fault zone, eastern section (3.7 km), San Cayetano fault (11.9 km), Mission Ridge fault system, Santa Ana section (Santa Ana fault) (12.9 km), Lion Canyon fault (14.8 km), Sisar fault zone (Big Canyon fault) (14.8 km) and Sisar fault zone (Sisar 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.
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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

This information is subject to change as more up-to-date data become available.

04/08/2023, M3.7 near Progreso, B.C., Mexico

Zackary Newman — Tue, 11 Apr 2023 13:55:45 +0000

Event

08 Apr 2023 19:06:52 PDT, (32.495, -115.573), depth 14.6km.
10km S of Progreso, B.C., Mexico

Aftershocks

As of 11 Apr 2023, 06:50AM PDT, there have been 3 aftershocks recorded.
The largest was M2.5 (smallest M0.9).
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 21 events of M4 or greater within 10km of today’s event.
The largest historic event was M5.3 on 2010/04/04.
The most recent historic event was M4.1 on 09 Apr 2011.

Faults

CFM fault associations: most likely Sierra Cucapah fault (76%). Alternates: Not associated with a CFM modeled fault (12%), Other CFM faults (12%).*

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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

This information is subject to change as more up-to-date data become available.

10/12/2022, M3.7 near Grapevine

Gabrielle Tepp — Wed, 12 Oct 2022 21:43:00 +0000

Event

12 Oct 2022 05:54:07 PDT, (35.048, -118.995), depth 12.3km.
13km NNW of Grapevine, California

Aftershocks

As of 12 Oct 2022, 02:31PM PDT, there have been 8 aftershocks recorded.
The largest was M2.0 (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.

Possible Foreshocks

There were 2 events during the 3 days prior to the earthquake (within a 10 km radius).

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 M7.5 on 1952/07/21.
The most recent historic event was M4.2 on 22 Sep 2005.

Faults

CFM fault associations: most likely White Wolf fault (79%). Alternates: Not associated with a CFM modeled fault (21%).*
Nearby faults: Wheeler Ridge fault zone (Wheeler Ridge fault) (2.1 km), unnamed faults (1952 earthquake fractures) (4.3 km), Pleito fault zone, western Pleito section (Pleito fault) (6.6 km) and Pleito fault zone, eastern Pleito section (Pleito fault) (7.2 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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

This information is subject to change as more up-to-date data become available.

06/03/2022, M3.7 near Warner Springs

Zackary Newman — Sun, 05 Jun 2022 14:19:07 +0000

Event

03 Jun 2022 03:40:29 PDT, (33.233, -116.665), depth 10.9km.
6km SSW of Warner Springs, California

Aftershocks

As of 05 Jun 2022, 07:10AM PDT, there have been 12 aftershocks recorded.
The largest was M1.9 (smallest M0.3).
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 4 events of M4 or greater within 10km of today’s event.
The largest historic event was M4.5 on 1984/10/10.
The most recent historic event was M4.5 on 10 Oct 1984.

Faults

CFM fault associations: most likely Earthquake Valley fault; east segment (47%). Alternates: Not associated with a CFM modeled fault (4%), Other CFM faults (49%).*
Nearby faults: Elsinore fault zone, Julian section (Elsinore fault) (5.6 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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

This information is subject to change as more up-to-date data become available.

04/16/2022, M3.7 near Maneadero

Zackary Newman — Sun, 17 Apr 2022 20:52:36 +0000

Event

16 Apr 2022 22:38:25 PDT, (31.653, -115.940), depth 16.7km.
60km E of Maneadero, B.C., Mexico

Aftershocks

As of 17 Apr 2022, 01:48PM PDT, there have been no aftershocks recorded.
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 1 events during the 3 days prior to the earthquake (within a 10 km radius).
The largest was M2.3 (2022/04/14).

Historical Seismicity

Since our records began in 1932 we’ve had 83 events of M4 or greater within 10km of today’s event.
The largest historic event was M6.2 on 1956/02/09.
The most recent historic event was M4.3 on 13 Nov 2015.

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.

CFM Fault: SCEC CFM 5.0 Fault name and closest segment if available; The CFM is maintained by Harvard University, Dept of Earth & Planetary Sciences.

Probability: The probability in percent the earthquake is associated with this fault.

SCSN: Caltech/USGS Southern California Seismic Network

This information is subject to change as more up-to-date data become available.