Earthquakes on March 15, 2026: 256 Worldwide, Largest M5.3

Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2026-03-15 2026-03-15 23:58:17 UTC	2.9ml	26 km ENE of Sterling, Alaska 60.626°, -150.307°	38.5 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.9 earthquake 26 km ENE of Sterling, Alaska came in on March 15, 2026 at 23:58 UTC. This was a shallow crustal earthquake, focused at 38.5 km depth. Coordinates: 60.626°, -150.307°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 23:55:28 UTC	4.3mb	164 km ESE of Kokopo, Papua New Guinea -5.096°, 153.548°	53.7 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.3 event was detected 164 km ESE of Kokopo, Papua New Guinea on March 15, 2026, with origin time 23:55 UTC. The event originated approximately 53.7 km below the surface, classifying it as shallow crustal. Coordinates: -5.096°, 153.548°. 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.
2026-03-15 2026-03-15 23:41:01 UTC	2.5ml	65 km ESE of Cantwell, Alaska 63.189°, -147.715°	0.6 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.5 event was detected 65 km ESE of Cantwell, Alaska on March 15, 2026, with origin time 23:41 UTC. At a depth of just 0.6 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. Coordinates: 63.189°, -147.715°. 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.
2026-03-15 2026-03-15 23:23:56 UTC	4.4mb	0 km N of Guoliang, China 29.773°, 105.923°	10.0 km	-	-	-	✓ Reviewed	USGS →
On March 15, 2026, worldwide seismic activity registered a magnitude 4.4 earthquake 0 km N of Guoliang, China at 23:23 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. Geolocation places the event at 29.773°N, 105.923°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 22:54:38 UTC	2.0ml	113 km N of Yakutat, Alaska 60.560°, -139.843°	1.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.0 earthquake 113 km N of Yakutat, Alaska came in on March 15, 2026 at 22:54 UTC. At a depth of just 1.0 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 60.560°N, -139.843°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 22:51:22 UTC	2.6ml	79 km WSW of Nikolski, Alaska 52.585°, -169.890°	10.1 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.6 earthquake 79 km WSW of Nikolski, Alaska with origin time 22:51 UTC on March 15, 2026. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 20 hours earlier. The hypocenter lay at 10.1 km, placing this in the shallow crustal category. Geolocation places the event at 52.585°N, -169.890°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 22:50:30 UTC	2.8md	33 km W of Petrolia, CA 40.343°, -124.678°	21.7 km	-	-	-	✓ Reviewed	USGS →
March 15, 2026 brought a magnitude 2.8 earthquake 33 km W of Petrolia, CA, logged at 22:50 UTC. At a depth of 21.7 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 40.343°N, -124.678°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 22:45:53 UTC	4.6mb	229 km ESE of Attu Station, Alaska 52.137°, 176.353°	10.0 km	-	II	-	✓ Reviewed	USGS →
March 15, 2026 brought a magnitude 4.6 earthquake 229 km ESE of Attu Station, Alaska, logged at 22:45 UTC. Maximum shaking intensity peaked at MMI 2.4 (weak). At a depth of 10.0 km, the event was shallow crustal. The epicenter is at 52.137°, 176.353°. 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.
2026-03-15 2026-03-15 22:45:40 UTC	2.0ml	110 km N of Yakutat, Alaska 60.518°, -140.096°	10.7 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.0 seismic event took place 110 km N of Yakutat, Alaska on March 15, 2026 at 22:45 UTC. The event originated approximately 10.7 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 60.518°, -140.096°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 22:39:43 UTC	4.9mb	central Mid-Atlantic Ridge 8.986°, -40.798°	10.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.9 earthquake near central Mid-Atlantic Ridge with origin time 22:39 UTC on March 15, 2026. It ranks as the third largest event in the current dataset. The event originated approximately 10.0 km below the surface, classifying it as shallow crustal. Coordinates: 8.986°, -40.798°. 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.
2026-03-15 2026-03-15 22:34:51 UTC	2.2ml	45 km NE of Fox River, Alaska 60.106°, -150.314°	45.7 km	-	-	-	✓ Reviewed	USGS →
At 22:34 UTC on March 15, 2026, a magnitude 2.2 tremor occurred 45 km NE of Fox River, Alaska. It arrived roughly 15 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. The hypocenter lay at 45.7 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 60.106°, -150.314°. 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.
2026-03-15 2026-03-15 22:31:47 UTC	2.1ml	91 km E of McCarthy, Alaska 61.578°, -141.236°	14.1 km	-	-	-	✓ Reviewed	USGS →
March 15, 2026 brought a magnitude 2.1 earthquake 91 km E of McCarthy, Alaska, logged at 22:31 UTC. At a depth of 14.1 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 61.578°, -141.236°. 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.
2026-03-15 2026-03-15 22:31:01 UTC	2.6ml	51 km SSE of Nikolski, Alaska 52.491°, -168.698°	35.0 km	-	-	-	✓ Reviewed	USGS →
On March 15, 2026, worldwide seismic activity registered a magnitude 2.6 earthquake 51 km SSE of Nikolski, Alaska at 22:31 UTC. At a depth of 35.0 km, the event was shallow crustal. Coordinates: 52.491°, -168.698°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 22:06:09 UTC	3.4ml	232 km ESE of Attu Station, Alaska 51.882°, 176.214°	25.3 km	-	I	-	✓ Reviewed	USGS →
On March 15, 2026 at 22:06 UTC, a magnitude 3.4 earthquake struck 232 km ESE of Attu Station, Alaska. On the Modified Mercalli scale, shaking reached 1.7 — considered weak. The hypocenter lay at 25.3 km, placing this in the shallow crustal category. Geolocation places the event at 51.882°N, 176.214°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 21:48:38 UTC	4.3mb	251 km SSE of Ambon, Indonesia -5.849°, 128.922°	269.2 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.3 earthquake 251 km SSE of Ambon, Indonesia came in on March 15, 2026 at 21:48 UTC. This was a intermediate depth earthquake, focused at 269.2 km depth. The epicenter is at -5.849°, 128.922°. 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.
2026-03-15 2026-03-15 21:34:37 UTC	2.0ml	3 km WSW of Glennallen, Alaska 62.094°, -145.602°	12.0 km	-	-	-	✓ Reviewed	USGS →
March 15, 2026 brought a magnitude 2.0 earthquake 3 km WSW of Glennallen, Alaska, logged at 21:34 UTC. This was a shallow crustal earthquake, focused at 12.0 km depth. The epicenter is at 62.094°, -145.602°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 21:25:20 UTC	4.1mb	54 km W of Ollagüe, Chile -21.161°, -68.772°	121.6 km	-	-	-	✓ Reviewed	USGS →
At 21:25 UTC on March 15, 2026, a magnitude 4.1 tremor occurred 54 km W of Ollagüe, Chile. The event originated approximately 121.6 km below the surface, classifying it as intermediate depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Geolocation places the event at -21.161°N, -68.772°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.
2026-03-15 2026-03-15 21:07:48 UTC	2.2ml	72 km NE of Tonopah, Nevada 38.462°, -116.568°	11.1 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.2 earthquake 72 km NE of Tonopah, Nevada came in on March 15, 2026 at 21:07 UTC. It arrived roughly 15 hours after a larger magnitude 2.3 mainshock in the same 20 km area, placing it within the typical aftershock window. This was a shallow crustal earthquake, focused at 11.1 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 38.462°, -116.568°. 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.
2026-03-15 2026-03-15 20:34:19 UTC	2.1ml	74 km ENE of Port Alsworth, Alaska 60.487°, -153.105°	146.1 km	-	-	-	✓ Reviewed	USGS →
On March 15, 2026 at 20:34 UTC, a magnitude 2.1 earthquake struck 74 km ENE of Port Alsworth, Alaska. The event originated approximately 146.1 km below the surface, classifying it as intermediate depth. The epicenter is at 60.487°, -153.105°. 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.
2026-03-15 2026-03-15 20:25:17 UTC	4.3mb	27 km NW of Yawatahama, Japan 33.628°, 132.212°	68.5 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.3 seismic event took place 27 km NW of Yawatahama, Japan on March 15, 2026 at 20:25 UTC. The hypocenter lay at 68.5 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 33.628°N, 132.212°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.
2026-03-15 2026-03-15 20:20:12 UTC	3.5ml	53 km S of Whites City, New Mexico 31.692°, -104.401°	4.8 km	1	IV	-	✓ Reviewed	USGS →
March 15, 2026 brought a magnitude 3.5 earthquake 53 km S of Whites City, New Mexico, logged at 20:20 UTC. Maximum shaking intensity peaked at MMI 4.4 (moderate). At a depth of just 4.8 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. A small number of nearby observers (1) submitted felt reports to the USGS. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 31.692°, -104.401°. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 20:10:58 UTC	4.2mb	Chagos Archipelago region -6.747°, 72.178°	10.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.2 earthquake in the Chagos Archipelago region with origin time 20:10 UTC on March 15, 2026. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. Coordinates: -6.747°, 72.178°. 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.
2026-03-15 2026-03-15 19:47:03 UTC	2.3ml	57 km SSW of Adak, Alaska 51.419°, -177.022°	49.8 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.3 earthquake 57 km SSW of Adak, Alaska at 19:47 UTC on March 15, 2026. This was a shallow crustal earthquake, focused at 49.8 km depth. The epicenter is at 51.419°, -177.022°. 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.
2026-03-15 2026-03-15 19:33:55 UTC	2.3ml	34 km WNW of Clam Gulch, Alaska 60.363°, -151.958°	77.1 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.3 event was detected 34 km WNW of Clam Gulch, Alaska on March 15, 2026, with origin time 19:33 UTC. The hypocenter lay at 77.1 km, placing this in the intermediate depth category. Geolocation places the event at 60.363°N, -151.958°E. 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.
2026-03-15 2026-03-15 19:26:57 UTC	4.4mb	60 km SW of Fereydūnshahr, Iran 32.506°, 49.729°	10.0 km	-	-	-	✓ Reviewed	USGS →
At 19:26 UTC on March 15, 2026, a magnitude 4.4 tremor occurred 60 km SW of Fereydūnshahr, Iran. The event originated approximately 10.0 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 32.506°, 49.729°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 18:56:54 UTC	4.9mb	84 km SSW of Honchō, Japan 41.398°, 142.622°	41.4 km	1	-	-	✓ Reviewed	USGS →
On March 15, 2026, worldwide seismic activity registered a magnitude 4.9 earthquake 84 km SSW of Honchō, Japan at 18:56 UTC. It ranks as the fourth largest event in the current dataset. A small number of nearby observers (1) submitted felt reports to the USGS. This was a shallow crustal earthquake, focused at 41.4 km depth. The epicenter is at 41.398°, 142.622°. 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.
2026-03-15 2026-03-15 18:55:01 UTC	2.0ml	61 km N of Petersville, Alaska 63.046°, -150.773°	115.8 km	-	-	-	✓ Reviewed	USGS →
On March 15, 2026 at 18:55 UTC, a magnitude 2.0 earthquake struck 61 km N of Petersville, Alaska. The hypocenter lay at 115.8 km, placing this in the intermediate depth category. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Geolocation places the event at 63.046°N, -150.773°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 18:39:14 UTC	4.7mb	28 km SE of Nichinan, Japan 31.403°, 131.553°	49.1 km	1	-	-	✓ Reviewed	USGS →
A magnitude 4.7 seismic event took place 28 km SE of Nichinan, Japan on March 15, 2026 at 18:39 UTC. A small number of nearby observers (1) submitted felt reports to the USGS. The hypocenter lay at 49.1 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 31.403°, 131.553°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2026-03-15 2026-03-15 18:31:38 UTC	4.3mb	46 km SE of Tena, Ecuador -1.306°, -77.534°	222.5 km	-	-	-	✓ Reviewed	USGS →
March 15, 2026 brought a magnitude 4.3 earthquake 46 km SE of Tena, Ecuador, logged at 18:31 UTC. At a depth of 222.5 km, the event was intermediate depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Coordinates: -1.306°, -77.534°. 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.
2026-03-15 2026-03-15 18:19:26 UTC	2.6ml	95 km ESE of Ugashik, Alaska 57.190°, -155.923°	64.2 km	-	-	-	✓ Reviewed	USGS →
At 18:19 UTC on March 15, 2026, a magnitude 2.6 tremor occurred 95 km ESE of Ugashik, Alaska. The event originated approximately 64.2 km below the surface, classifying it as shallow crustal. The epicenter is at 57.190°, -155.923°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.6 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 15, 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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