Earthquakes on March 23, 2026: 309 Worldwide, Largest M5.7

Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2026-03-23 2026-03-23 23:49:10 UTC	4.9mb	Izu Islands, Japan region 32.329°, 142.447°	10.0 km	-	-	-	✓ Reviewed	USGS →
At 23:49 UTC on March 23, 2026, a magnitude 4.9 tremor occurred in the Izu Islands, Japan region. It ranks as the fifth largest event in the current dataset. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. Geolocation places the event at 32.329°N, 142.447°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 23:47:17 UTC	4.5mb	Izu Islands, Japan region 32.285°, 142.564°	10.0 km	-	-	-	✓ Reviewed	USGS →
At 23:47 UTC on March 23, 2026, a magnitude 4.5 tremor occurred in the Izu Islands, Japan region. The event originated approximately 10.0 km below the surface, classifying it as shallow crustal. Coordinates: 32.285°, 142.564°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 23:39:18 UTC	2.2ml	36 km E of Bonanza, Oregon 42.145°, -120.970°	11.7 km	-	-	-	✓ Reviewed	USGS →
At 23:39 UTC on March 23, 2026, a magnitude 2.2 tremor occurred 36 km E of Bonanza, Oregon. The hypocenter lay at 11.7 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 42.145°, -120.970°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 23:38:04 UTC	2.5ml	32 km SSW of Adak, Alaska 51.602°, -176.812°	35.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.5 earthquake was recorded 32 km SSW of Adak, Alaska on March 23, 2026 at 23:38 UTC. At a depth of 35.0 km, the event was shallow crustal. The epicenter is at 51.602°, -176.812°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 23:23:09 UTC	2.3ml	106 km ESE of Akutan, Alaska 53.748°, -164.286°	19.5 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.3 seismic event took place 106 km ESE of Akutan, Alaska on March 23, 2026 at 23:23 UTC. The event originated approximately 19.5 km below the surface, classifying it as shallow crustal. Coordinates: 53.748°, -164.286°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 23:14:03 UTC	2.2ml	4 km NNW of Rangely, Colorado 40.130°, -108.818°	6.0 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2026, worldwide seismic activity registered a magnitude 2.2 earthquake 4 km NNW of Rangely, Colorado at 23:14 UTC. This was a shallow crustal earthquake, focused at 6.0 km depth. Geolocation places the event at 40.130°N, -108.818°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 23:10:26 UTC	4.3mb	124 km E of Hihifo, Tonga -16.043°, -172.635°	10.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.3 earthquake was recorded 124 km E of Hihifo, Tonga on March 23, 2026 at 23:10 UTC. At a depth of 10.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at -16.043°, -172.635°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 23:07:03 UTC	4.6mb	78 km ENE of Hihifo, Tonga -15.762°, -173.093°	10.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.6 earthquake 78 km ENE of Hihifo, Tonga came in on March 23, 2026 at 23:07 UTC. This was a shallow crustal earthquake, focused at 10.0 km depth. Geolocation places the event at -15.762°N, -173.093°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 23:03:19 UTC	4.3mwr	87 km WNW of Puerto, Chile -20.015°, -70.967°	14.4 km	1	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.3 earthquake 87 km WNW of Puerto, Chile with origin time 23:03 UTC on March 23, 2026. This event falls inside the aftershock decay of a nearby magnitude 4.9 earthquake that occurred about 1 hours earlier. A small number of nearby observers (1) submitted felt reports to the USGS. The event originated approximately 14.4 km below the surface, classifying it as shallow crustal. Geolocation places the event at -20.015°N, -70.967°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 22:52:17 UTC	4.9mww	83 km WNW of Puerto, Chile -19.991°, -70.916°	16.4 km	8	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.9 earthquake 83 km WNW of Puerto, Chile at 22:52 UTC on March 23, 2026. A small number of nearby observers (8) submitted felt reports to the USGS. At a depth of 16.4 km, the event was shallow crustal. Coordinates: -19.991°, -70.916°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 22:51:19 UTC	2.1ml	54 km WNW of Anchor Point, Alaska 59.989°, -152.699°	112.9 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2026, worldwide seismic activity registered a magnitude 2.1 earthquake 54 km WNW of Anchor Point, Alaska at 22:51 UTC. It arrived roughly 14 hours after a larger magnitude 2.2 mainshock in the same 20 km area, placing it within the typical aftershock window. This was a intermediate depth earthquake, focused at 112.9 km depth. The epicenter is at 59.989°, -152.699°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 22:44:01 UTC	4.3mb	Mid-Indian Ridge -21.662°, 69.073°	10.0 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2026, worldwide seismic activity registered a magnitude 4.3 earthquake near Mid-Indian Ridge at 22:44 UTC. This was a shallow crustal earthquake, focused at 10.0 km depth. Coordinates: -21.662°, 69.073°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 22:33:27 UTC	2.3ml	17 km E of Ferry, Alaska 64.007°, -148.753°	3.1 km	-	-	-	✓ Reviewed	USGS →
March 23, 2026 brought a magnitude 2.3 earthquake 17 km E of Ferry, Alaska, logged at 22:33 UTC. At a depth of just 3.1 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 64.007°, -148.753°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 22:25:36 UTC	2.4ml	44 km S of Unalaska, Alaska 53.476°, -166.614°	68.3 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.4 earthquake 44 km S of Unalaska, Alaska at 22:25 UTC on March 23, 2026. At a depth of 68.3 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 53.476°N, -166.614°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 22:23:15 UTC	4.3mb	75 km SSE of Kuril’sk, Russia 44.591°, 148.204°	107.1 km	-	-	-	✓ Reviewed	USGS →
At 22:23 UTC on March 23, 2026, a magnitude 4.3 tremor occurred 75 km SSE of Kuril’sk, Russia. The hypocenter lay at 107.1 km, placing this in the intermediate depth category. The epicenter is at 44.591°, 148.204°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 22:19:19 UTC	4.6mwr	92 km WNW of Puerto, Chile -20.031°, -71.012°	12.1 km	3	-	-	✓ Reviewed	USGS →
A magnitude 4.6 seismic event took place 92 km WNW of Puerto, Chile on March 23, 2026 at 22:19 UTC. A small number of nearby observers (3) submitted felt reports to the USGS. The hypocenter lay at 12.1 km, placing this in the shallow crustal category. Coordinates: -20.031°, -71.012°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 22:18:42 UTC	2.5ml	96 km WNW of Arctic Village, Alaska 68.392°, -147.768°	0.9 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.5 earthquake 96 km WNW of Arctic Village, Alaska with origin time 22:18 UTC on March 23, 2026. At a depth of just 0.9 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Geolocation places the event at 68.392°N, -147.768°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 21:57:13 UTC	2.2ml	43 km SE of Pedro Bay, Alaska 59.466°, -153.656°	122.7 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.2 earthquake 43 km SE of Pedro Bay, Alaska came in on March 23, 2026 at 21:57 UTC. This was a intermediate depth earthquake, focused at 122.7 km depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Coordinates: 59.466°, -153.656°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 21:55:17 UTC	3.2md	89 km N of Cruz Bay, U.S. Virgin Islands 19.120°, -64.631°	42.2 km	-	-	-	✓ Reviewed	USGS →
March 23, 2026 brought a magnitude 3.2 earthquake 89 km N of Cruz Bay, U.S. Virgin Islands, logged at 21:55 UTC. This was a shallow crustal earthquake, focused at 42.2 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 19.120°, -64.631°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 21:31:54 UTC	3.6ml	78 km SSW of Unalaska, Alaska 53.188°, -166.840°	35.0 km	-	II	-	✓ Reviewed	USGS →
On March 23, 2026, worldwide seismic activity registered a magnitude 3.6 earthquake 78 km SSW of Unalaska, Alaska at 21:31 UTC. Peak ground motion corresponded to MMI 2.3, classified as weak shaking. At a depth of 35.0 km, the event was shallow crustal. Coordinates: 53.188°, -166.840°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 21:18:38 UTC	4.0mb	210 km NW of Nagqu, China 32.658°, 90.316°	10.0 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2026, worldwide seismic activity registered a magnitude 4.0 earthquake 210 km NW of Nagqu, China at 21:18 UTC. This was a shallow crustal earthquake, focused at 10.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 32.658°N, 90.316°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 21:03:03 UTC	4.0mb	86 km SSW of La Gloria, Mexico 15.431°, -94.428°	35.0 km	-	-	-	✓ Reviewed	USGS →
At 21:03 UTC on March 23, 2026, a magnitude 4.0 tremor occurred 86 km SSW of La Gloria, Mexico. The hypocenter lay at 35.0 km, placing this in the shallow crustal category. Coordinates: 15.431°, -94.428°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 20:37:22 UTC	4.2mb	165 km SE of Petropavlovsk-Kamchatsky, Russia 52.252°, 160.676°	10.0 km	-	-	-	✓ Reviewed	USGS →
March 23, 2026 brought a magnitude 4.2 earthquake 165 km SE of Petropavlovsk-Kamchatsky, Russia, logged at 20:37 UTC. At a depth of 10.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 52.252°, 160.676°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 20:21:58 UTC	3.0ml	63 km W of Anchor Point, Alaska 59.724°, -152.948°	98.9 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 3.0 earthquake 63 km W of Anchor Point, Alaska with origin time 20:21 UTC on March 23, 2026. The event originated approximately 98.9 km below the surface, classifying it as intermediate depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Coordinates: 59.724°, -152.948°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 19:53:31 UTC	2.4ml	6 km SSW of Anza, CA 33.502°, -116.694°	11.7 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.4 event was detected 6 km SSW of Anza, CA on March 23, 2026, with origin time 19:53 UTC. The hypocenter lay at 11.7 km, placing this in the shallow crustal category. The epicenter is at 33.502°, -116.694°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 19:52:35 UTC	2.1md	11 km SE of Pinnacles, CA 36.458°, -121.063°	3.9 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2026, worldwide seismic activity registered a magnitude 2.1 earthquake 11 km SE of Pinnacles, CA at 19:52 UTC. At a depth of just 3.9 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 36.458°N, -121.063°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 19:48:08 UTC	4.5mb	South Sandwich Islands region -57.845°, -25.719°	51.1 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.5 earthquake in the South Sandwich Islands region at 19:48 UTC on March 23, 2026. This was a shallow crustal earthquake, focused at 51.1 km depth. The epicenter is at -57.845°, -25.719°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 19:09:30 UTC	4.0mb	95 km ENE of Vallenar, Chile -28.157°, -69.909°	130.3 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.0 earthquake 95 km ENE of Vallenar, Chile at 19:09 UTC on March 23, 2026. At a depth of 130.3 km, the event was intermediate depth. The epicenter is at -28.157°, -69.909°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 19:07:39 UTC	2.4ml	98 km SSE of Sand Point, Alaska 54.489°, -160.037°	4.3 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.4 event was detected 98 km SSE of Sand Point, Alaska on March 23, 2026, with origin time 19:07 UTC. Coming 3 hours after a magnitude 2.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. At a depth of just 4.3 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Coordinates: 54.489°, -160.037°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-23 2026-03-23 18:45:31 UTC	4.1mb	18 km W of Grindavík, Iceland 63.867°, -22.815°	10.0 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2026 at 18:45 UTC, a magnitude 4.1 earthquake struck 18 km W of Grindavík, Iceland. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 63.867°N, -22.815°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.

Legend:

Mag: Magnitude ({magType} = ml, mb, mw, etc.)

Felt: Number of DYFI felt reports

MMI: Modified Mercalli Intensity (I-X+)

Alert: PAGER alert level

Depth: Shallow (<70km), Intermediate, Deep (>300km)

Status: Auto = preliminary, Reviewed = verified by seismologist

Click any row to see additional technical details.

About This Page

This page shows all earthquakes recorded by the USGS Earthquake Hazards Program during the 24-hour UTC period on March 23, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.

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