SCSNGabrielle Tepp – SCSN

03/16/2025, M3.9 near Malibu

Gabrielle Tepp — Mon, 17 Mar 2025 03:50:20 +0000

Event

16 Mar 2025 20:17:21 PDT, (34.067, -118.895), depth 14.4km.
10km NW of Malibu, California

Aftershocks

As of 16 Mar 2025, 08:48PM PDT, there has been 1 aftershock recorded, M1.5.
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 8 events of M4 or greater within 10km of today’s event.
The largest historic event was M5.3 on 1973/02/21.
The most recent historic event was M4.1 on 09 Mar 2025.

Faults

.*
Nearby faults: Malibu Coast fault zone (Malibu Coast fault) (3.0 km), Malibu Coast fault zone (Escondido thrust) (5.9 km), Anacapa-Dume fault (8.5 km), Boney Mountain fault (8.7 km), Sycamore Canyon fault (10.1 km), Santa Monica fault (offshore) (11.0 km), Malibu Coast fault zone (Latigo fault) (11.4 km), Malibu Coast fault zone (Solstice fault) (12.2 km) and Malibu Coast fault zone (Puerco Canyon fault) (14.6 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.

*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.

11/22/2024, M3.7 near Malibu

Gabrielle Tepp — Fri, 22 Nov 2024 22:31:43 +0000

Event

22 Nov 2024 14:15:54 PST, (34.058, -118.807), depth 10.6km.
6km N of Malibu, California

Aftershocks

As of 24 Nov 2024, 06:26AM PST, there have been 3 aftershocks recorded.
The largest was M1.8 (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 M5.2 on 1979/01/01.
The most recent historic event was M4.7 on 12 Sep 2024.

Faults

CFM fault associations: most likely Anacapa; Dume fault segment (52%). Alternates: Not associated with a CFM modeled fault (4%), Other CFM faults (44%).*
Nearby faults: Malibu Coast fault zone (Malibu Coast fault) (2.1 km), Malibu Coast fault zone (Escondido thrust) (3.2 km), Malibu Coast fault zone (Latigo fault) (4.0 km), Santa Monica fault (offshore) (4.5 km), Malibu Coast fault zone (Solstice fault) (4.6 km), Malibu Coast fault zone (Puerco Canyon fault) (6.5 km), Anacapa-Dume fault (9.0 km), San Pedro Basin fault zone (San Pedro Basin fault) (12.1 km) and Boney Mountain 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.

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

12/04/2023, M3.5 near Fullerton

Gabrielle Tepp — Tue, 05 Dec 2023 05:12:54 +0000

Event

04 Dec 2023 20:09:58 PST, (33.877, -117.905), depth 10.7km.
2km E of Fullerton, California

Aftershocks

As of 04 Dec 2023, 09:09PM PST, there has been 1 aftershock recorded, M2.3.
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 31 events of M4 or greater within 10km of today’s event.
The largest historic event was M5.4 on 2008/07/29.
The most recent historic event was M4.1 on 29 Mar 2014.

Faults

.*
Nearby faults: El Modeno fault (5.2 km), Peralta Hills fault (6.5 km) and Elsinore fault zone, Whittier section (Whittier 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.

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.

11/03/2023, M4.1 near Ojai

Gabrielle Tepp — Fri, 03 Nov 2023 21:01:29 +0000

Event

03 Nov 2023 13:12:18 PDT, (34.420, -119.165), depth 10.4km.
8km ESE of Ojai, California
This event is a late aftershock of the M5.1 Ojai event in August 2023

Aftershocks

As of 03 Nov 2023, 01:56PM PDT, there has been 1 aftershock recorded, M1.9.
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 M1.2 (2023/11/02).

Historical Seismicity

Since our records began in 1932 we’ve had 6 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

Nearby faults: Sisar fault zone (Big Canyon fault) (0.5 km), Sisar fault zone (Sisar fault) (0.5 km), Lion Canyon fault (1.2 km), Mission Ridge fault system, Santa Ana section (Santa Ana fault) (2.3 km), San Cayetano fault (2.6 km), Faults near Oakview and Meiners Oaks (La Vista fault) (6.9 km), faults near Oakview and Meiners Oaks (Villanova fault) (7.9 km), faults near Oakview and Meiners Oaks (Devils Gulch fault) (8.7 km), Oak Ridge fault (9.0 km), faults near Oakview and Meiners Oaks (Oak View fault) (9.7 km), Sisar fault (9.7 km), faults of Orcutt and Timber Canyons (Orcutt fault) (10.8 km), Santa Ynez fault zone, eastern section (12.2 km), Red Mountain fault zone (Red Mountain fault) (12.8 km), Mission Ridge fault system, Arroyo Parida section (Arroyo Parida fault) (13.3 km), Mission Ridge fault system, Arroyo Parida section (13.4 km) and faults of Orcutt and Timber Canyons (Culbertson fault) (13.5 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.

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.

07/05/2022, M3.5 near Bodfish

Gabrielle Tepp — Wed, 06 Jul 2022 18:21:07 +0000

Event

05 Jul 2022 23:15:46 PDT, (35.555, -118.402), depth 2.9km.
9km ESE of Bodfish, California

Aftershocks

As of 06 Jul 2022, 11:17AM 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.

Historical Seismicity

Since our records began in 1932 we’ve had 13 events of M4 or greater within 10km of today’s event.
The largest historic event was M4.5 on 1955/05/28.
The most recent historic event was M4.0 on 27 Aug 2021.

Faults

CFM fault associations: most likely Lake Isabella lineament (75%). Alternates: Not associated with a CFM modeled fault (14%), Other CFM faults (11%).*

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.