Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2023-03-23 2023-03-23 23:39:23 UTC	4.3mb	117 km S of Kokopo, Papua New Guinea -5.402°, 152.340°	35.0 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.3 event was detected 117 km S of Kokopo, Papua New Guinea on March 23, 2023, with origin time 23:39 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 23:06:17 UTC	2.1ml	100 km W of Akhiok, Alaska 56.840°, -155.806°	5.0 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.1 event was detected 100 km W of Akhiok, Alaska on March 23, 2023, with origin time 23:06 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 23:03:33 UTC	2.0ml	43 km E of Pedro Bay, Alaska 59.718°, -153.347°	114.7 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2023 at 23:03 UTC, a magnitude 2.0 earthquake struck 43 km E of Pedro Bay, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 22:51:02 UTC	2.5ml	25 km WNW of Volcano, Hawaii 19.500°, -155.468°	6.0 km	-	-	-	✓ Reviewed	USGS →
At 22:51 UTC on March 23, 2023, a magnitude 2.5 tremor occurred 25 km WNW of Volcano, Hawaii. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 22:07:43 UTC	2.6ml	10 km ENE of P?hala, Hawaii 19.253°, -155.399°	31.8 km	2	-	-	✓ Reviewed	USGS →
At 22:07 UTC on March 23, 2023, a magnitude 2.6 tremor occurred 10 km ENE of P?hala, Hawaii. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 22:01:26 UTC	2.0md	12 km E of P?hala, Hawaii 19.194°, -155.360°	35.3 km	-	-	-	Auto	USGS →
March 23, 2023 brought a magnitude 2.0 earthquake 12 km E of P?hala, Hawaii, logged at 22:01 UTC. It arrived roughly 13 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 21:57:52 UTC	2.5ml	Fox Islands, Aleutian Islands, Alaska 53.150°, -166.827°	35.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.5 earthquake was recorded near Fox Islands, Aleutian Islands, Alaska on March 23, 2023 at 21:57 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 21:40:19 UTC	4.3mb	15 km ENE of Lata, Solomon Islands -10.682°, 165.937°	145.3 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.3 earthquake 15 km ENE of Lata, Solomon Islands came in on March 23, 2023 at 21:40 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 21:24:11 UTC	4.5mwr	41 km WNW of Barrancas, Argentina -36.693°, -70.353°	159.0 km	1	-	-	✓ Reviewed	USGS →
March 23, 2023 brought a magnitude 4.5 earthquake 41 km WNW of Barrancas, Argentina, logged at 21:24 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 21:10:37 UTC	4.5mb	east central Pacific Ocean 4.357°, -118.647°	10.0 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2023 at 21:10 UTC, a magnitude 4.5 earthquake struck near east central Pacific Ocean. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 20:43:47 UTC	2.4md	3 km NNW of Tallaboa, Puerto Rico 18.020°, -66.733°	11.8 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.4 earthquake 3 km NNW of Tallaboa, Puerto Rico at 20:43 UTC on March 23, 2023. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 20:30:24 UTC	2.0md	11 km SE of P?hala, Hawaii 19.138°, -155.395°	31.2 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.0 event was detected 11 km SE of P?hala, Hawaii on March 23, 2023, with origin time 20:30 UTC. It arrived roughly 12 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 20:27:01 UTC	3.2ml	19 km SE of Wright, Wyoming 43.648°, -105.296°	0.0 km	-	-	-	✓ Reviewed	USGS →
March 23, 2023 brought a magnitude 3.2 earthquake 19 km SE of Wright, Wyoming, logged at 20:27 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 19:47:27 UTC	2.0ml	41 km SE of Port Graham, Alaska 59.086°, -151.312°	42.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.0 earthquake was recorded 41 km SE of Port Graham, Alaska on March 23, 2023 at 19:47 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 19:34:31 UTC	2.1ml	99 km W of Adak, Alaska 51.863°, -178.075°	3.8 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.1 earthquake 99 km W of Adak, Alaska came in on March 23, 2023 at 19:34 UTC. It arrived roughly 12 hours after a larger magnitude 2.4 mainshock in the same 20 km area, placing it within the typical aftershock window. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 19:33:54 UTC	3.0ml	209 km SE of Perryville, Alaska 54.639°, -156.720°	4.8 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2023 at 19:33 UTC, a magnitude 3.0 earthquake struck 209 km SE of Perryville, Alaska. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 19:16:31 UTC	4.1mb	Kermadec Islands region -31.707°, -178.839°	9.4 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2023 at 19:16 UTC, a magnitude 4.1 earthquake struck in the Kermadec Islands region. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 18:37:23 UTC	2.1ml	57 km S of Kaktovik, Alaska 69.624°, -143.372°	12.1 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.1 seismic event took place 57 km S of Kaktovik, Alaska on March 23, 2023 at 18:37 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.2 earthquake that occurred about 8 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 18:36:42 UTC	4.6mb	Izu Islands, Japan region 30.011°, 141.877°	10.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.6 earthquake in the Izu Islands, Japan region came in on March 23, 2023 at 18:36 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 18:29:00 UTC	2.0ml	Gulf of Alaska 58.933°, -142.466°	3.1 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.0 earthquake near Gulf of Alaska with origin time 18:29 UTC on March 23, 2023. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 18:18:12 UTC	4.3mb	Kermadec Islands region -31.618°, -179.118°	9.5 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.3 seismic event took place in the Kermadec Islands region on March 23, 2023 at 18:18 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 18:16:55 UTC	2.9ml	220 km WSW of Adak, Alaska 51.249°, -179.657°	35.0 km	-	-	-	✓ Reviewed	USGS →
At 18:16 UTC on March 23, 2023, a magnitude 2.9 tremor occurred 220 km WSW of Adak, Alaska. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 17:38:59 UTC	2.2ml	15 km N of Willow, Alaska 61.882°, -149.992°	7.1 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.2 event was detected 15 km N of Willow, Alaska on March 23, 2023, with origin time 17:38 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 17:21:28 UTC	2.7ml	96 km E of Eagle Village, Alaska 64.927°, -139.108°	9.8 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2023 at 17:21 UTC, a magnitude 2.7 earthquake struck 96 km E of Eagle Village, Alaska. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 16:33:52 UTC	2.7ml	225 km WSW of Adak, Alaska 51.189°, -179.690°	13.2 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.7 earthquake was recorded 225 km WSW of Adak, Alaska on March 23, 2023 at 16:33 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 16:29:11 UTC	2.0ml	Southern Alaska 59.911°, -153.170°	116.8 km	-	-	-	✓ Reviewed	USGS →
On March 23, 2023, worldwide seismic activity registered a magnitude 2.0 earthquake near Southern Alaska at 16:29 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 16 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 16:19:43 UTC	2.0md	5 km WSW of Guánica, Puerto Rico 17.959°, -66.954°	6.6 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.0 earthquake 5 km WSW of Guánica, Puerto Rico came in on March 23, 2023 at 16:19 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 6 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 15:49:05 UTC	2.0ml	22 km WNW of Port Lions, Alaska 57.927°, -153.236°	56.5 km	-	-	-	✓ Reviewed	USGS →
At 15:49 UTC on March 23, 2023, a magnitude 2.0 tremor occurred 22 km WNW of Port Lions, Alaska. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 15:40:19 UTC	2.0ml	21 km S of Sand Point, Alaska 55.143°, -160.477°	18.3 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.0 earthquake 21 km S of Sand Point, Alaska at 15:40 UTC on March 23, 2023. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2023-03-23 2023-03-23 15:34:21 UTC	2.6ml	72 km SE of Adak, Alaska 51.455°, -175.836°	35.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.6 earthquake 72 km SE of Adak, Alaska at 15:34 UTC on March 23, 2023. The event was offshore. 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 23, 2023. 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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