Earthquakes on March 12, 2023
500
EARTHQUAKES on March 12, 2023
24-hour UTC period · USGS data
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
36
M3.0–3.9
7
M2.0–2.9
71
M1.0–1.9
383
Activity Summary
500
Total earthquakes
~250
Daily average
Elevated
Activity level
3
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.6
144 km S of Lata, Solomon Islands
07:43 UTC · 10.0 km deep
5.1
Santa Cruz Islands
20:56 UTC · 11.5 km deep
5.1
South Sandwich Islands region
01:09 UTC · 10.0 km deep
4.9
South Sandwich Islands region
03:20 UTC · 18.4 km deep
4.8
Bougainville region, Papua New Guinea
23:51 UTC · 154.3 km deep
4.8
South Sandwich Islands region
02:15 UTC · 10.0 km deep
4.7
88 km SSE of Koshima, Japan
21:17 UTC · 35.0 km deep
4.6
217 km SW of Merizo Village, Guam
18:16 UTC · 10.0 km deep
Earthquake Map — March 12, 2023
All Earthquakes — March 12, 2023
Showing 30 of 117 (filtered from 500)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-03-12 2023-03-12 23:54:16 UTC | 4.4mb | northern Xinjiang, China 43.801°, 92.686° | 10.2 km | - | - | - | ✓ Reviewed | USGS → |
On March 12, 2023, worldwide seismic activity registered a magnitude 4.4 earthquake near northern Xinjiang, China at 23:54 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 23:51:14 UTC | 4.8mb | Bougainville region, Papua New Guinea -5.479°, 154.234° | 154.3 km | - | - | - | ✓ Reviewed | USGS → |
At 23:51 UTC on March 12, 2023, a magnitude 4.8 tremor occurred in the Bougainville region, Papua New Guinea. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 23:45:54 UTC | 3.8mb | 284 km SE of Attu Station, Alaska 51.464°, 176.688° | 35.0 km | - | I | - | ✓ Reviewed | USGS → |
March 12, 2023 brought a magnitude 3.8 earthquake 284 km SE of Attu Station, Alaska, logged at 23:45 UTC. The event was offshore. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 23:36:54 UTC | 2.0ml | Central Alaska 63.126°, -151.330° | 4.3 km | - | - | - | ✓ Reviewed | USGS → |
March 12, 2023 brought a magnitude 2.0 earthquake near Central Alaska, logged at 23:36 UTC. 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. | ||||||||
2023-03-12 2023-03-12 23:32:49 UTC | 2.0ml | 37 km WNW of Anchor Point, Alaska 59.913°, -152.442° | 80.9 km | - | - | - | ✓ Reviewed | USGS → |
On March 12, 2023 at 23:32 UTC, a magnitude 2.0 earthquake struck 37 km WNW of Anchor Point, Alaska. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 20 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 22:48:13 UTC | 2.7ml | 5 km W of Gillette, Wyoming 44.294°, -105.571° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 12, 2023, worldwide seismic activity registered a magnitude 2.7 earthquake 5 km W of Gillette, Wyoming at 22:48 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 22:47:44 UTC | 4.4mb | 92 km E of Lata, Solomon Islands -10.885°, 166.628° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:47 UTC on March 12, 2023, a magnitude 4.4 tremor occurred 92 km E of Lata, Solomon Islands. Coming 2 hours after a magnitude 5.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 22:38:48 UTC | 2.1ml | 100 km W of Adak, Alaska 51.852°, -178.098° | 3.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 100 km W of Adak, Alaska at 22:38 UTC on March 12, 2023. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 6 hours earlier. 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. | ||||||||
2023-03-12 2023-03-12 22:33:37 UTC | 2.9md | 3km SSE of Somes Bar, CA 41.352°, -123.467° | 34.7 km | - | - | - | ✓ Reviewed | USGS → |
March 12, 2023 brought a magnitude 2.9 earthquake 3km SSE of Somes Bar, CA, logged at 22:33 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 22:09:41 UTC | 2.4md | 2 km SW of Indios, Puerto Rico 17.974°, -66.835° | 12.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 2 km SW of Indios, Puerto Rico on March 12, 2023 at 22:09 UTC. Coming 1 hours after a magnitude 3.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 22:02:05 UTC | 3.5md | 3 km SSW of Indios, Puerto Rico 17.969°, -66.830° | 9.0 km | 2 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.5 earthquake 3 km SSW of Indios, Puerto Rico with origin time 22:02 UTC on March 12, 2023. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:56:25 UTC | 2.2ml | 101 km W of Adak, Alaska 51.874°, -178.101° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 101 km W of Adak, Alaska came in on March 12, 2023 at 21:56 UTC. Coming 5 hours after a magnitude 2.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:45:24 UTC | 2.9ml | 225 km W of Adak, Alaska 51.794°, -179.899° | 98.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.9 event was detected 225 km W of Adak, Alaska on March 12, 2023, with origin time 21:45 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:44:56 UTC | 2.0ml | 41 km SW of Adak, Alaska 51.567°, -176.987° | 34.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 41 km SW of Adak, Alaska on March 12, 2023 at 21:44 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:21:36 UTC | 2.4ml | 39 km NNW of Hughes, Alaska 66.368°, -154.613° | 2.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 39 km NNW of Hughes, Alaska on March 12, 2023 at 21:21 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:17:52 UTC | 4.7mb | 88 km SSE of Koshima, Japan 29.456°, 130.724° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.7 event was detected 88 km SSE of Koshima, Japan on March 12, 2023, with origin time 21:17 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:12:54 UTC | 2.5ml | 262 km SE of Chiniak, Alaska 56.330°, -148.659° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 262 km SE of Chiniak, Alaska with origin time 21:12 UTC on March 12, 2023. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:03:14 UTC | 3.1md | Puerto Rico region 18.045°, -65.729° | 10.6 km | 1 | - | - | ✓ Reviewed | USGS → |
At 21:03 UTC on March 12, 2023, a magnitude 3.1 tremor occurred in the Puerto Rico region. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:01:52 UTC | 4.2mb | 87 km N of Waisai, Indonesia 0.535°, 130.656° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place 87 km N of Waisai, Indonesia on March 12, 2023 at 21:01 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 21:01:31 UTC | 4.4mb | 102 km SE of Gul’cha, Kyrgyzstan 39.790°, 74.432° | 17.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 102 km SE of Gul’cha, Kyrgyzstan at 21:01 UTC on March 12, 2023. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 20:59:20 UTC | 2.1md | 0 km SW of La Parguera, Puerto Rico 17.974°, -67.047° | 9.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 0 km SW of La Parguera, Puerto Rico at 20:59 UTC on March 12, 2023. Coming 18 hours after a magnitude 2.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 20:56:51 UTC | 5.1mww | Santa Cruz Islands -10.790°, 166.783° | 11.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.1 earthquake was recorded near Santa Cruz Islands on March 12, 2023 at 20:56 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 20:36:41 UTC | 2.0ml | 101 km W of Adak, Alaska 51.840°, -178.102° | 3.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 101 km W of Adak, Alaska with origin time 20:36 UTC on March 12, 2023. It arrived roughly 4 hours after a larger magnitude 2.9 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 20:32:28 UTC | 2.0ml | 63 km WSW of Akhiok, Alaska 56.773°, -155.167° | 72.5 km | - | - | - | ✓ Reviewed | USGS → |
On March 12, 2023, worldwide seismic activity registered a magnitude 2.0 earthquake 63 km WSW of Akhiok, Alaska at 20:32 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 20:26:44 UTC | 4.2mb | 11 km NNE of Jordán, Colombia 6.836°, -73.071° | 146.4 km | - | - | - | ✓ Reviewed | USGS → |
March 12, 2023 brought a magnitude 4.2 earthquake 11 km NNE of Jordán, Colombia, logged at 20:26 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 20:25:34 UTC | 4.2mb | near the east coast of Honshu, Japan 39.574°, 142.376° | 88.6 km | - | - | - | ✓ Reviewed | USGS → |
On March 12, 2023 at 20:25 UTC, a magnitude 4.2 earthquake struck near near the east coast of Honshu, Japan. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-12 2023-03-12 20:19:57 UTC | 2.0ml | 97 km W of Adak, Alaska 51.858°, -178.049° | 3.5 km | - | - | - | ✓ Reviewed | USGS → |
At 20:19 UTC on March 12, 2023, a magnitude 2.0 tremor occurred 97 km W of Adak, Alaska. Coming 3 hours after a magnitude 2.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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. | ||||||||
2023-03-12 2023-03-12 20:01:17 UTC | 3.2ml | 25 km ENE of Wright, Wyoming 43.868°, -105.225° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 12, 2023, worldwide seismic activity registered a magnitude 3.2 earthquake 25 km ENE of Wright, Wyoming at 20:01 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. | ||||||||
2023-03-12 2023-03-12 19:23:42 UTC | 2.2ml | 88 km W of Adak, Alaska 51.861°, -177.918° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 88 km W of Adak, Alaska on March 12, 2023 at 19:23 UTC. It arrived roughly 2 hours after a larger magnitude 2.9 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. | ||||||||
2023-03-12 2023-03-12 19:07:02 UTC | 2.0md | 13 km ESE of P?hala, Hawaii 19.142°, -155.368° | 29.2 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.0 earthquake 13 km ESE of P?hala, Hawaii at 19:07 UTC on March 12, 2023. It arrived roughly 2 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.0 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 12, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.