• 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.

• 17 Jul 2024 14:59:27 PDT, (33.195, -116.387), depth 13.7km.
• 7km S of Borrego Springs, California

Aftershocks

• As of 18 Jul 2024, 07:43AM PDT, there have been 16 aftershocks recorded.
• The largest was M2.6 (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 8 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M2.7 (2024/07/16).

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 M5.5 on 1969/04/28.
• The most recent historic event was M4.1 on 21 May 2005.

Faults

• CFM fault associations: most likely Not associated with a CFM modeled fault (88%). Alternates: Coyote Creek fault (6%), Other CFM faults (6%).*
• Nearby faults: Elsinore fault zone, Julian section (Earthquake Valley fault) (6.6 km), Elsinore fault zone, Earthquake Valley fault, Julian section (12.2 km), San Jacinto fault zone, Coyote Creek section (Coyote Creek fault) (12.3 km) and San Jacinto fault zone, Anza section (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.

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

• 13 Apr 2024 09:08:38 PDT, (33.360, -116.305), depth 11.6km.
• 13km NNE of Borrego Springs, California

Aftershocks

• As of 14 Apr 2024, 08:43AM PDT, there have been 2 aftershocks recorded.
• The largest was M1.2 (smallest M1.2).
• 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.

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 M4.1 on 31 Dec 2022.

Faults

• CFM fault associations: most likely Clark fault; south segment (53%). Alternates: Not associated with a CFM modeled fault (4%), Other CFM faults (43%).*
• Nearby faults: San Jacinto fault zone, Anza section (Clark fault) (1.2 km), San Jacinto fault zone, Coyote Creek section (Coyote Creek fault) (4.7 km), San Jacinto fault zone, Anza section (5.2 km), San Jacinto fault zone, Coyote Creek section (5.2 km) and San Jacinto fault zone, Anza section (Buck Ridge fault) (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.

• 31 Dec 2022 04:12:26 PST, (33.398, -116.392), depth 2.5km.
• 16km N of Borrego Springs, California

Aftershocks

• As of 31 Dec 2022, 04:25AM PST, there have been 5 aftershocks recorded.
• The largest was M1.6 (smallest M1.1).
• 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.

Possible Foreshocks

• There were 4 events during the 3 days prior to the earthquake (within a 10 km radius).
• The largest was M1.7 (2022/12/30).

Historical Seismicity

• Since our records began in 1932 we’ve had 38 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 (33%). Alternates: Not associated with a CFM modeled fault (5%), Other CFM faults (62%).*
• Nearby faults: San Jacinto fault zone, Anza section (1.4 km), San Jacinto fault zone, Anza section (Clark fault) (1.7 km), San Jacinto fault zone, Coyote Creek section (Coyote Creek fault) (1.9 km), San Jacinto fault zone, Coyote Creek section (6.1 km) and San Jacinto fault zone, Anza section (Buck Ridge fault) (6.4 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.

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 60km.

The ground shaking from ShakeMap (instrumental intensity) in the epicentral area was slightly higher than the reported felt intensities from Did You Feel It.

Aftershocks

So far (10 Jun 2016, 05:43PM PDT) there have been 593 aftershocks recorded, the largest M3.8. More than 30 events have been greater than M2. 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. More information on aftershock probability is available HERE

Historical Seismicity

Since our records began in 1932 we’ve had 24 events of M4 or greater within 10km of today’s event, the largest was M5.4 (2010/07/07) and the most recent was M4.7 on 11 Mar 2013.

Faults

Nearby faults: San Jacinto fault (SJF) zone, Anza section (0.6 km). The San Jacinto is a right-lateral, strike-slip fault, consistent with the moment tensor of this event. The event occurred in close proximity to the Clark fault strand of the SJF at about 12 km (7.5 mi) depth. For this magnitude and depth, surface rupture is not likely so a definitive association with a specific fault strand is not possible at this time. Field surveys will be conducted to investigate the possibility of surface rupture. Spectra of the mainshock suggest rupture to the northwest but the rupture could be mostly bilateral.

Further Info

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

Published on June 10, 2016 @ 08:07:09 UTC

Southern California Seismic Network (SCSN) operated by Caltech and USGS

Version 2: This report supersedes any earlier probability reports about this event.

MAINSHOCK

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 PERCENT

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 PERCENT) of an earthquake equal to or larger than this mainshock in the next 7 days.

WEAK AFTERSHOCKS (Magnitude 3 to 5)

In addition, approximately 1 to 12 SMALL AFTERSHOCKS are expected in the same 7-DAY PERIOD and may be felt locally.

This 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.

Background Information About Aftershocks

Like most earthquakes, the recent earthquake is expected to be followed by numerous aftershocks. Aftershocks are additional earthquakes that occur after the mainshock and in the same geographic area. Usually, aftershocks are smaller than the mainshock, but occasionally an aftershock may be strong enough to be felt widely throughout the area and may cause additional damage, particularly to structures already weakened in the mainshock. As a rule of thumb, aftershocks of magnitude 5 and larger are considered potentially damaging.

Aftershocks are most common immediately after the mainshock; their average number per day decreases rapidly as time passes. Aftershocks are most likely to be felt in the first few days after the mainshock, but may be felt weeks, months, or even years afterwards. In general, the larger the mainshock, the longer its aftershocks will be felt.

Aftershocks tend to occur near the mainshock, but the exact geographic pattern of the aftershocks varies from earthquake to earthquake and is not predictable. The larger the mainshock, the larger the area of aftershocks. While there is no “hard” cutoff distance beyond which an earthquake is totally incapable of triggering an aftershock, the vast majority of aftershocks are located close to the mainshock. As a rule of thumb, a magnitude 6 mainshock may have aftershocks up to 10 to 20 miles away, while a magnitude 7 mainshock may have aftershocks as far as 30 to 50 miles away.