• 06 Aug 2025 02:00:49 PDT, (34.310, -117.492), depth 11.9km.
• 6km N of Lytle Creek, California

Aftershocks

• As of 06 Aug 2025, 09:14AM PDT, there have been 4 aftershocks recorded.
• The largest was M2.5 (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.

Historical Seismicity

• Since our records began in 1932 we’ve had 16 events of M4 or greater within 10km of today’s event.
• The largest historic event was M5.2 on 1970/09/12.
• The most recent historic event was M4.3 on 31 Jul 2025.

Faults

• CFM fault associations: most likely San Andreas fault (38%). Alternates: Not associated with a CFM modeled fault (17%), Other CFM faults (45%).*
• Nearby faults: Cleghorn fault zone, southern Cleghorn section (Cleghorn fault) (2.0 km), San Andreas fault zone, Mojave section (2.0 km), San Andreas fault zone, San Bernardino Mountains section (South Branch SAF) (2.2 km), San Andreas fault zone, San Bernardino Mountains section (5.1 km), San Jacinto fault zone, San Bernardino section (North Fork Lytle Creek fault) (5.1 km), San Jacinto fault zone, San Bernardino section (Glen Helen fault) (5.5 km), San Jacinto fault zone, San Bernardino section (San Jacinto fault) (6.3 km), San Gabriel fault zone, San Gabriel River section (San Gabriel fault) (6.6 km), San Jacinto fault zone, San Bernardino section (Middle Fork Lytle Creek fault) (6.7 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.

• 06 Aug 2025 01:02:55 PDT, (34.020, -117.590), depth 6.2km.
• 5km SE of Ontario, California

Aftershocks

• As of 06 Aug 2025, 09:07AM PDT, there have been 11 aftershocks recorded.
• The largest was M3.5 (smallest M0.8).
• 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 17 events of M4 or greater within 10km of today’s event.
• The largest historic event was M5.5 on 1990/02/28.
• The most recent historic event was M4.4 on 15 Jan 2014.

Faults

• CFM fault associations: most likely Fontana Seismicity lineament (96%). Alternates: Not associated with a CFM modeled fault (3%), Other CFM faults (1%).*
• Nearby faults: Red Hill-Etiwanda Avenue fault (9.3 km), Elsinore fault zone, Chino section (Chino fault) (11.4 km) and San Jose fault (14.3 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.

• 05 Aug 2025 16:54:37 PDT, (34.145, -117.415), depth 6.7km.
• 6km NW of Rialto, California

Aftershocks

• As of 06 Aug 2025, 07:54AM PDT, there have been 5 aftershocks recorded.
• The largest was M3.7 (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 M2.0 (2025/08/04).

Historical Seismicity

• Since our records began in 1932 we’ve had 27 events of M4 or greater within 10km of today’s event.
• The largest historic event was M5.2 on 1970/09/12.
• The most recent historic event was M4.3 on 31 Jul 2025.

Faults

• CFM fault associations: most likely Fontana Seismicity lineament (77%). Alternates: Not associated with a CFM modeled fault (2%), Other CFM faults (21%).*
• Nearby faults: San Jacinto fault zone, San Bernardino section (Lytle Creek fault) (3.1 km), San Jacinto fault zone, San Bernardino section (San Jacinto fault) (3.3 km), Sierra Madre fault zone, Cucamonga section (Cucamonga fault) (4.3 km), San Jacinto fault zone, San Bernardino section (Glen Helen fault) (4.5 km), San Andreas fault zone, San Bernardino Mountains section (Tokay Hill fault) (8.6 km), San Andreas fault zone, San Bernardino Mountains section (South Branch SAF) (8.8 km), Red Hill-Etiwanda Avenue fault (Etiwanda Avenue fault) (8.9 km), San Jacinto fault zone, San Bernardino section (North Fork Lytle Creek fault) (9.3 km), Waterman Canyon fault zone (Waterman Canyon fault) (9.3 km), San Andreas fault zone, San Bernardino Mountains section (Peter’s fault) (9.4 km), San Andreas fault zone, San Bernardino Mountains section (Mill Creek fault) (10.1 km), San Jacinto fault zone, San Bernardino section (Middle Fork Lytle Creek fault) (11.2 km), San Jacinto fault zone, San Bernardino section (South Fork Lytle Creek fault) (11.7 km), Red Hill-Etiwanda Avenue fault (12.5 km) and San Andreas fault zone, San Bernardino Mountains section (12.8 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.

• 04 Aug 2025 23:59:16 PDT, (32.913, -115.535), depth 16.2km.
• 7km S of Brawley, California

Aftershocks

• As of 05 Aug 2025, 09:23AM PDT, there have been 14 aftershocks recorded.
• The largest was M3.1 (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.

Possible Foreshocks

• There were 2 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M2.7 (2025/08/05).

Historical Seismicity

• Since our records began in 1932 we’ve had 102 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 (42%). Alternates: Not associated with a CFM modeled fault (6%), Other CFM faults (52%).*
• Nearby faults: Imperial fault (0.6 km), Brawley seismic zone (Brawley fault zone) (5.2 km), Brawley seismic zone (6.4 km), San Jacinto fault zone, Superstition Hills section (Wienert fault) (11.3 km) and San Jacinto fault zone, Superstition Hills section (Superstition Hills flt) (11.8 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.

• 31 Jul 2025 09:32:24 PDT, (34.155, -117.412), depth 5.3km.
• 6km W of Muscoy, California

Aftershocks

• As of 31 Jul 2025, 09:47AM PDT, there have been 2 aftershocks recorded.
• The largest was M3.1 (smallest M2.0).
• 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 5 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M3.0 (2025/07/31).

Historical Seismicity

• Since our records began in 1932 we’ve had 26 events of M4 or greater within 10km of today’s event.
• The largest historic event was M5.2 on 1970/09/12.
• The most recent historic event was M4.2 on 25 Jan 2024.

Faults

• CFM fault associations: most likely Fontana Seismicity lineament (51%). Alternates: Not associated with a CFM modeled fault (3%), Other CFM faults (46%).*
• Nearby faults: San Jacinto fault zone, San Bernardino section (Lytle Creek fault) (2.4 km), San Jacinto fault zone, San Bernardino section (San Jacinto fault) (3.0 km), San Jacinto fault zone, San Bernardino section (Glen Helen fault) (3.4 km), Sierra Madre fault zone, Cucamonga section (Cucamonga fault) (3.8 km), San Andreas fault zone, San Bernardino Mountains section (Tokay Hill fault) (7.5 km), San Andreas fault zone, San Bernardino Mountains section (South Branch SAF) (7.7 km), Waterman Canyon fault zone (Waterman Canyon fault) (8.2 km), San Andreas fault zone, San Bernardino Mountains section (Peter’s fault) (8.3 km), San Jacinto fault zone, San Bernardino section (North Fork Lytle Creek fault) (8.5 km), Red Hill-Etiwanda Avenue fault (Etiwanda Avenue fault) (9.1 km), San Andreas fault zone, San Bernardino Mountains section (Mill Creek fault) (9.3 km), San Jacinto fault zone, San Bernardino section (Middle Fork Lytle Creek fault) (10.4 km), San Jacinto fault zone, San Bernardino section (South Fork Lytle Creek fault) (11.0 km), San Andreas fault zone, San Bernardino Mountains section (11.8 km), Red Hill-Etiwanda Avenue fault (12.9 km) and Cleghorn fault zone, southern Cleghorn section (Cleghorn fault) (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.

• 13 Jul 2025 05:27:55 PDT, (36.168, -118.037), depth 0.4km.
• 13km SSW of Olancha, California

Aftershocks

• As of 13 Jul 2025, 05:52AM PDT, there have been 2 aftershocks recorded.
• The largest was M2.0 (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 1 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M0.8 (2025/07/11).

Historical Seismicity

• Since our records began in 1932 we’ve had 19 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 (65%). Alternates: Not associated with a CFM modeled fault (35%).*
• Nearby faults: Southern Sierra Nevada fault zone, Haiwee Reservoir section (1.8 km), Owens Valley fault zone, 1872 rupture section (4.8 km) and unnamed faults south side Owens Lake (9.0 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.

• 04 Jun 2025 12:27:08 PDT, (33.675, -116.762), depth 15.1km.
• 8km SSW of Idyllwild, California

Aftershocks

• As of 04 Jun 2025, 12:42PM 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 2 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M0.9 (2025/06/03).

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 1963/09/23.
• The most recent historic event was M4.2 on 19 Jul 1999.

Faults

• CFM fault associations: most likely Clark fault; north segment (72%). Alternates: Not associated with a CFM modeled fault (5%), Other CFM faults (23%).*
• Nearby faults: San Jacinto fault zone, Anza section (Clark fault) (1.8 km), San Jacinto fault zone, San Jacinto Valley section (Hot Springs fault) (3.0 km), San Jacinto fault zone, Anza section (Thomas Mountain fault) (4.2 km), San Jacinto fault zone, Anza section (9.6 km), San Jacinto fault zone, Anza section (Buck Ridge fault) (12.8 km) and San Jacinto fault zone, San Jacinto Valley section (Casa Loma 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 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.

• 19 May 2025 12:09:19 PDT, (35.048, -119.040), depth 6.0km.
• 15km NW of Grapevine, California

Aftershocks

• As of 19 May 2025, 12:32PM PDT, there have been 2 aftershocks recorded.
• The largest was M2.5 (smallest M2.5).
• 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 2 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M3.8 (2025/05/19).

Historical Seismicity

• Since our records began in 1932 we’ve had 108 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 M4.4 on 08 Aug 2024.

Faults

• CFM fault associations: most likely Not associated with a CFM modeled fault (50%). Alternates: White Wolf fault (41%), Other CFM faults (9%).*
• Nearby faults: Wheeler Ridge fault zone (Wheeler Ridge fault) (2.0 km), Pleito fault zone, western Pleito section (Pleito fault) (4.3 km), unnamed faults (1952 earthquake fractures) (4.6 km), Pleito fault zone, eastern Pleito section (Pleito fault) (6.5 km) and Pleito fault zone, western Pleito section (Oak Hill thrust) (14.0 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.

• 30 Apr 2025 02:13:41 PDT, (31.505, -115.622), depth 7.8km.
• 91km SSW of Alberto Oviedo Mota, B.C., Mexico

Aftershocks

• As of 30 Apr 2025, 07:54AM PDT, there have been 4 aftershocks recorded.
• The largest was M2.8 (smallest M1.9).
• 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 80 events of M4 or greater within 10km of today’s event.
• The largest historic event was M5.1 on 2020/08/17.
• The most recent historic event was M4.2 on 28 May 2024.

Faults

• CFM fault associations: most likely Not associated with a CFM modeled fault (100%).*

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.

• 14 Apr 2025 10:08:28 PDT, (33.043, -116.595), depth 13.4km.
• 4km S of Julian, California

Aftershocks

• As of 14 Apr 2025, 10:16AM PDT, there have been 8 aftershocks recorded.
• The largest was M3.0 (smallest M2.0).
• 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 13 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M3.3 (2025/04/13).

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 M4.5 on 1984/10/10.
• The most recent historic event was M4.3 on 04 Dec 1991.

Faults

• CFM fault associations: most likely Elsinore fault; south segment (76%). Alternates: Not associated with a CFM modeled fault (23%), Other CFM faults (1%).*
• Nearby faults: Elsinore fault zone, Julian section (Elsinore fault) (4.7 km), Elsinore fault zone, Julian section (Earthquake Valley fault) (11.0 km) and Elsinore fault zone, Earthquake Valley fault, Julian section (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.
• 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.