Earthquakes on March 18, 2023
292
EARTHQUAKES on March 18, 2023
24-hour UTC period · USGS data
LARGEST: M6.8 — 14 km NNW of Baláo, Ecuador
68 km deep · 253 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
2
M4.0–4.9
44
M3.0–3.9
9
M2.0–2.9
51
M1.0–1.9
186
Activity Summary
292
Total earthquakes
~250
Daily average
Normal
Activity level
2
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.8
14 km NNW of Baláo, Ecuador
17:12 UTC · 68.0 km deep
Felt by 253
5.0
Kermadec Islands region
03:44 UTC · 10.0 km deep
4.9
105 km NE of Tobelo, Indonesia
16:30 UTC · 10.7 km deep
4.9
Hindu Kush region, Afghanistan
00:00 UTC · 163.5 km deep
Felt by 7
4.8
282 km E of Levuka, Fiji
23:14 UTC · 552.7 km deep
4.8
Izu Islands, Japan region
17:05 UTC · 10.0 km deep
4.8
27 km S of San Martín, Argentina
15:41 UTC · 37.4 km deep
Felt by 3
4.8
121 km ENE of Tobelo, Indonesia
07:14 UTC · 9.4 km deep
Earthquake Map — March 18, 2023
All Earthquakes — March 18, 2023
Showing 30 of 106 (filtered from 292)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-03-18 2023-03-18 23:31:24 UTC | 2.7ml | 116 km SW of Nikolski, Alaska 52.200°, -170.081° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.7 earthquake 116 km SW of Nikolski, Alaska with origin time 23:31 UTC on March 18, 2023. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 23:14:45 UTC | 4.8mb | 282 km E of Levuka, Fiji -18.062°, -178.011° | 552.7 km | - | - | - | ✓ Reviewed | USGS → |
At 23:14 UTC on March 18, 2023, a magnitude 4.8 tremor occurred 282 km E of Levuka, Fiji. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 23:09:58 UTC | 2.9ml | 8 km N of Segundo, Colorado 37.199°, -104.750° | 6.5 km | 10 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 8 km N of Segundo, Colorado at 23:09 UTC on March 18, 2023. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 22:55:52 UTC | 2.1ml | 44 km NW of Toyah, Texas 31.612°, -104.101° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 44 km NW of Toyah, Texas on March 18, 2023 at 22:55 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.2 earthquake that occurred about 18 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 22:20:00 UTC | 2.4ml | Island of Hawaii, Hawaii 19.261°, -155.513° | -0.1 km | - | - | - | ✓ Reviewed | USGS → |
March 18, 2023 brought a magnitude 2.4 earthquake near Island of Hawaii, Hawaii, logged at 22:20 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 2 hours earlier. 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. | ||||||||
2023-03-18 2023-03-18 22:01:39 UTC | 2.0ml | 62 km SE of Unalaska, Alaska 53.505°, -165.829° | 41.1 km | - | - | - | ✓ Reviewed | USGS → |
March 18, 2023 brought a magnitude 2.0 earthquake 62 km SE of Unalaska, Alaska, logged at 22:01 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 21:58:58 UTC | 2.2ml | 38 km WNW of Clam Gulch, Alaska 60.338°, -152.054° | 87.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 38 km WNW of Clam Gulch, Alaska on March 18, 2023, with origin time 21:58 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 21:58:05 UTC | 2.8ml | 128 km W of Adak, Alaska 52.081°, -178.477° | 178.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 seismic event took place 128 km W of Adak, Alaska on March 18, 2023 at 21:58 UTC. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 21:42:39 UTC | 4.0mb | 7 km N of Kawerau, New Zealand -38.031°, 176.687° | 11.8 km | 3 | - | - | ✓ Reviewed | USGS → |
On March 18, 2023, worldwide seismic activity registered a magnitude 4.0 earthquake 7 km N of Kawerau, New Zealand at 21:42 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 21:35:00 UTC | 2.1ml | 97 km W of Adak, Alaska 51.859°, -178.045° | 4.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 97 km W of Adak, Alaska with origin time 21:35 UTC on March 18, 2023. Coming 11 hours after a magnitude 2.6 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 21:23:56 UTC | 2.6md | 48km WSW of Ferndale, CA 40.483°, -124.820° | 19.8 km | - | - | - | ✓ Reviewed | USGS → |
March 18, 2023 brought a magnitude 2.6 earthquake 48km WSW of Ferndale, CA, logged at 21:23 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 21:03:06 UTC | 2.9ml | 112 km SE of Atka, Alaska 51.376°, -173.249° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.9 event was detected 112 km SE of Atka, Alaska on March 18, 2023, with origin time 21:03 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 20:35:47 UTC | 3.1md | 6 km SW of Guánica, Puerto Rico 17.939°, -66.959° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake 6 km SW of Guánica, Puerto Rico with origin time 20:35 UTC on March 18, 2023. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 20:30:07 UTC | 4.6mwr | 69 km S of Calama, Chile -23.080°, -68.867° | 97.7 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2023 at 20:30 UTC, a magnitude 4.6 earthquake struck 69 km S of Calama, Chile. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 20:20:10 UTC | 4.1mb | eastern New Guinea region, Papua New Guinea -6.124°, 147.579° | 73.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.1 earthquake in the eastern New Guinea region, Papua New Guinea at 20:20 UTC on March 18, 2023. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 19:55:30 UTC | 2.6ml | 3 km SSE of P?hala, Hawaii 19.174°, -155.460° | 32.5 km | - | - | - | ✓ Reviewed | USGS → |
At 19:55 UTC on March 18, 2023, a magnitude 2.6 tremor occurred 3 km SSE of P?hala, Hawaii. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 19:48:05 UTC | 2.0ml | 31 km W of Anchor Point, Alaska 59.769°, -152.395° | 70.6 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2023 at 19:48 UTC, a magnitude 2.0 earthquake struck 31 km W of Anchor Point, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 19:38:52 UTC | 2.1ml | 55 km S of Whites City, New Mexico 31.675°, -104.410° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2023, worldwide seismic activity registered a magnitude 2.1 earthquake 55 km S of Whites City, New Mexico at 19:38 UTC. It arrived roughly 1 hours after a larger magnitude 2.3 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 19:35:56 UTC | 2.3ml | 56 km SSW of Whites City, New Mexico 31.680°, -104.517° | 4.6 km | - | - | - | ✓ Reviewed | USGS → |
At 19:35 UTC on March 18, 2023, a magnitude 2.3 tremor occurred 56 km SSW of Whites City, New Mexico. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 19:27:01 UTC | 4.3mb | 21 km SSE of Sensuntepeque, El Salvador 13.690°, -88.563° | 184.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 21 km SSE of Sensuntepeque, El Salvador on March 18, 2023, with origin time 19:27 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 18:52:35 UTC | 2.5md | 14km S of Ferndale, CA 40.452°, -124.284° | 26.5 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2023, worldwide seismic activity registered a magnitude 2.5 earthquake 14km S of Ferndale, CA at 18:52 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 18:38:56 UTC | 2.5md | 5 km WSW of Guánica, Puerto Rico 17.951°, -66.955° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
At 18:38 UTC on March 18, 2023, a magnitude 2.5 tremor occurred 5 km WSW of Guánica, Puerto Rico. Coming 1 hours after a magnitude 2.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 18:37:22 UTC | 2.5md | Puerto Rico region 17.948°, -66.953° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake in the Puerto Rico region at 18:37 UTC on March 18, 2023. It arrived roughly 1 hours after a larger magnitude 2.8 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 18:21:47 UTC | 4.5mb | Kermadec Islands region -30.150°, -176.660° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:21 UTC on March 18, 2023, a magnitude 4.5 tremor occurred in the Kermadec Islands region. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 18:02:30 UTC | 3.0ml | 10 km ENE of Wright, Wyoming 43.772°, -105.364° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2023, worldwide seismic activity registered a magnitude 3.0 earthquake 10 km ENE of Wright, Wyoming at 18:02 UTC. 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. | ||||||||
2023-03-18 2023-03-18 18:01:48 UTC | 2.0md | 4 km SSE of P?hala, Hawaii 19.160°, -155.469° | 33.9 km | - | - | - | Auto | USGS → |
A magnitude 2.0 seismic event took place 4 km SSE of P?hala, Hawaii on March 18, 2023 at 18:01 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 17:52:17 UTC | 2.8md | 5 km WSW of Guánica, Puerto Rico 17.946°, -66.954° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
On March 18, 2023 at 17:52 UTC, a magnitude 2.8 earthquake struck 5 km WSW of Guánica, Puerto Rico. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 17:48:10 UTC | 4.4mb | Izu Islands, Japan region 29.911°, 141.738° | 10.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place in the Izu Islands, Japan region on March 18, 2023 at 17:48 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 17:45:04 UTC | 2.1ml | 41 km N of Petersville, Alaska 62.864°, -150.651° | 88.7 km | - | - | - | ✓ Reviewed | USGS → |
At 17:45 UTC on March 18, 2023, a magnitude 2.1 tremor occurred 41 km N of Petersville, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-03-18 2023-03-18 17:42:00 UTC | 2.0ml | 28 km WNW of Kalifornsky, Alaska 60.472°, -151.791° | 65.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 28 km WNW of Kalifornsky, Alaska on March 18, 2023 at 17:42 UTC. 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 18, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.