Earthquakes on March 16, 2023
326
EARTHQUAKES on March 16, 2023
24-hour UTC period · USGS data
LARGEST: M7.0 — Kermadec Islands region
10 km deep · 6 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
7
M4.0–4.9
40
M3.0–3.9
20
M2.0–2.9
62
M1.0–1.9
197
Activity Summary
326
Total earthquakes
~250
Daily average
Elevated
Activity level
7
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
7.0
Kermadec Islands region
00:56 UTC · 10.0 km deep
Felt by 6
5.2
11 km ESE of Khowy, Iran
11:47 UTC · 10.0 km deep
Felt by 19
5.2
249 km S of Kencong, Indonesia
05:22 UTC · 10.0 km deep
5.2
Kermadec Islands region
01:46 UTC · 10.0 km deep
5.1
14 km NNE of Ḩalabja, Iraq
18:32 UTC · 10.0 km deep
Felt by 33
5.1
Kermadec Islands region
01:28 UTC · 10.0 km deep
5.0
227 km NNE of Colonia, Micronesia
17:03 UTC · 10.0 km deep
4.8
8 km W of Bolu, Turkey
10:55 UTC · 10.0 km deep
Felt by 9
Earthquake Map — March 16, 2023
All Earthquakes — March 16, 2023
Showing 30 of 129 (filtered from 326)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-03-16 2023-03-16 23:44:39 UTC | 2.2ml | 30 km NW of Toyah, Texas 31.513°, -104.011° | 8.4 km | - | - | - | ✓ Reviewed | USGS → |
March 16, 2023 brought a magnitude 2.2 earthquake 30 km NW of Toyah, Texas, logged at 23:44 UTC. It arrived roughly 4 hours after a larger magnitude 2.7 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 23:26:50 UTC | 3.2ml | 74 km WSW of Cantwell, Alaska 63.218°, -150.381° | 112.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.2 event was detected 74 km WSW of Cantwell, Alaska on March 16, 2023, with origin time 23:26 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 22:58:01 UTC | 2.6md | 5 km WSW of Guánica, Puerto Rico 17.951°, -66.957° | 5.7 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 5 km WSW of Guánica, Puerto Rico came in on March 16, 2023 at 22:58 UTC. Coming 19 hours after a magnitude 3.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 22:49:07 UTC | 2.8md | 6 km SW of Guánica, Puerto Rico 17.940°, -66.955° | 6.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 6 km SW of Guánica, Puerto Rico with origin time 22:49 UTC on March 16, 2023. It arrived roughly 18 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 21:57:24 UTC | 3.4md | 4 km N of Sabana Eneas, Puerto Rico 18.128°, -67.083° | 14.0 km | 10 | - | - | ✓ Reviewed | USGS → |
At 21:57 UTC on March 16, 2023, a magnitude 3.4 tremor occurred 4 km N of Sabana Eneas, Puerto Rico. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 21:46:21 UTC | 2.0ml | 100 km W of Adak, Alaska 51.864°, -178.090° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
At 21:46 UTC on March 16, 2023, a magnitude 2.0 tremor occurred 100 km W of Adak, Alaska. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 19 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 21:43:22 UTC | 4.6mb | Kermadec Islands region -30.447°, -176.793° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2023, worldwide seismic activity registered a magnitude 4.6 earthquake in the Kermadec Islands region at 21:43 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 21:42:28 UTC | 3.0ml | 14 km ENE of Point of Rocks, Wyoming 41.739°, -108.636° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
At 21:42 UTC on March 16, 2023, a magnitude 3.0 tremor occurred 14 km ENE of Point of Rocks, Wyoming. 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. | ||||||||
2023-03-16 2023-03-16 21:39:54 UTC | 3.4ml | 81 km S of Unalaska, Alaska 53.152°, -166.720° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2023, worldwide seismic activity registered a magnitude 3.4 earthquake 81 km S of Unalaska, Alaska at 21:39 UTC. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 21:30:48 UTC | 3.6md | 137 km NNE of Vieques, Puerto Rico 19.602°, -65.403° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2023 at 21:30 UTC, a magnitude 3.6 earthquake struck 137 km NNE of Vieques, Puerto Rico. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 21:16:30 UTC | 3.5ml | Rat Islands, Aleutian Islands, Alaska 51.865°, 178.333° | 112.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.5 earthquake was recorded near Rat Islands, Aleutian Islands, Alaska on March 16, 2023 at 21:16 UTC. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 21:00:02 UTC | 4.4mb | Kermadec Islands region -30.246°, -176.493° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake in the Kermadec Islands region at 21:00 UTC on March 16, 2023. This event falls inside the aftershock decay of a nearby magnitude 5.2 earthquake that occurred about 19 hours earlier. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 20:58:43 UTC | 2.1md | 11km SE of Pinnacles, CA 36.470°, -121.043° | 3.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 11km SE of Pinnacles, CA with origin time 20:58 UTC on March 16, 2023. 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. | ||||||||
2023-03-16 2023-03-16 20:41:44 UTC | 4.3mb | 17 km NNW of Behbahān, Iran 30.731°, 50.154° | 22.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 17 km NNW of Behbahān, Iran on March 16, 2023 at 20:41 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 20:37:11 UTC | 2.9ml | 48 km ESE of Plush, Oregon 42.194°, -119.394° | 9.3 km | - | II | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 48 km ESE of Plush, Oregon came in on March 16, 2023 at 20:37 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 1 hours earlier. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 20:33:40 UTC | 3.2ml | 49 km ESE of Plush, Oregon 42.188°, -119.387° | 8.3 km | - | III | - | ✓ Reviewed | USGS → |
March 16, 2023 brought a magnitude 3.2 earthquake 49 km ESE of Plush, Oregon, logged at 20:33 UTC. In the 72 hours after this event, the USGS recorded 4 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 20:31:59 UTC | 2.0ml | 56 km S of Whites City, New Mexico 31.668°, -104.323° | 7.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 56 km S of Whites City, New Mexico at 20:31 UTC on March 16, 2023. Coming 3 hours after a magnitude 2.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 20:25:18 UTC | 2.3ml | western Texas 31.708°, -104.596° | 5.2 km | - | - | - | ✓ Reviewed | USGS → |
At 20:25 UTC on March 16, 2023, a magnitude 2.3 tremor occurred near western Texas. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 19:59:13 UTC | 4.3mb | 30 km SE of Kızkalesi, Turkey 36.256°, 34.370° | 10.0 km | 3 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 30 km SE of Kızkalesi, Turkey with origin time 19:59 UTC on March 16, 2023. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 19:57:41 UTC | 3.1ml | 89 km SE of Adak, Alaska 51.406°, -175.587° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2023 at 19:57 UTC, a magnitude 3.1 earthquake struck 89 km SE of Adak, Alaska. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 19:33:35 UTC | 2.2ml | 50 km SSW of Whites City, New Mexico 31.748°, -104.571° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2023 at 19:33 UTC, a magnitude 2.2 earthquake struck 50 km SSW of Whites City, New Mexico. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 19:28:51 UTC | 2.7ml | 30 km NW of Toyah, Texas 31.520°, -104.004° | 7.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 30 km NW of Toyah, Texas at 19:28 UTC on March 16, 2023. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 19:25:54 UTC | 2.0ml | 86 km WSW of Adak, Alaska 51.541°, -177.772° | 31.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 86 km WSW of Adak, Alaska on March 16, 2023, with origin time 19:25 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 19:14:07 UTC | 2.1ml | 101 km W of Adak, Alaska 51.854°, -178.111° | 4.4 km | - | - | - | ✓ Reviewed | USGS → |
At 19:14 UTC on March 16, 2023, a magnitude 2.1 tremor occurred 101 km W of Adak, Alaska. It arrived roughly 16 hours after a larger magnitude 3.0 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. | ||||||||
2023-03-16 2023-03-16 18:48:25 UTC | 2.6md | 5 km SW of Maricao, Puerto Rico 18.138°, -67.013° | 24.6 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 5 km SW of Maricao, Puerto Rico on March 16, 2023 at 18:48 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 18:32:51 UTC | 5.1mww | 14 km NNE of Ḩalabja, Iraq 35.302°, 46.026° | 10.0 km | 33 | - | - | ✓ Reviewed | USGS → |
At 18:32 UTC on March 16, 2023, a magnitude 5.1 tremor occurred 14 km NNE of Ḩalabja, Iraq. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 18:19:40 UTC | 2.5ml | 201 km WSW of Adak, Alaska 51.374°, -179.430° | 58.7 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2023, worldwide seismic activity registered a magnitude 2.5 earthquake 201 km WSW of Adak, Alaska at 18:19 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 18:13:37 UTC | 4.6mb | Kermadec Islands region -30.466°, -176.604° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:13 UTC on March 16, 2023, a magnitude 4.6 tremor occurred in the Kermadec Islands region. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 17:56:34 UTC | 2.1ml | Alaska Peninsula 56.743°, -155.870° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake near Alaska Peninsula at 17:56 UTC on March 16, 2023. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-16 2023-03-16 17:54:57 UTC | 4.6mb | 135 km ENE of Bitung, Indonesia 1.788°, 126.291° | 38.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake 135 km ENE of Bitung, Indonesia at 17:54 UTC on March 16, 2023. See the M4.6 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 16, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.