Earthquakes on December 18, 2023
275
EARTHQUAKES on December 18, 2023
24-hour UTC period · USGS data
12 km deep · 34 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
42
M3.0–3.9
15
M2.0–2.9
49
M1.0–1.9
166
Activity Summary
275
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
5.9
38 km WNW of Linxia Chengguanzhen, China
15:59 UTC · 12.0 km deep
Felt by 34
5.1
31 km S of Padam, India
10:18 UTC · 10.0 km deep
Felt by 8
5.0
91 km ESE of Hihifo, Tonga
14:06 UTC · 10.0 km deep
4.9
116 km E of Aras-asan, Philippines
11:12 UTC · 10.0 km deep
4.9
South Atlantic Ocean
03:55 UTC · 10.0 km deep
4.9
Reykjanes Ridge
03:18 UTC · 10.0 km deep
4.9
150 km SSW of La Esperanza (El Zapotal), Mexico
00:15 UTC · 10.0 km deep
4.8
38 km SSW of Padam, India
10:31 UTC · 10.0 km deep
Felt by 3
Earthquake Map — December 18, 2023
All Earthquakes — December 18, 2023
Showing 30 of 109 (filtered from 275)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-12-18 2023-12-18 23:59:37 UTC | 4.1mb | 55 km NW of Sabang, Indonesia 6.281°, 95.007° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.1 event was detected 55 km NW of Sabang, Indonesia on December 18, 2023, with origin time 23:59 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 23:59:19 UTC | 3.0ml | Rat Islands, Aleutian Islands, Alaska 51.621°, 178.526° | 74.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.0 event was detected near Rat Islands, Aleutian Islands, Alaska on December 18, 2023, with origin time 23:59 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 23:55:11 UTC | 3.8ml | 31 km S of Segundo, Colorado 36.845°, -104.801° | 6.8 km | 4 | IV | - | ✓ Reviewed | USGS → |
This magnitude 3.8 event was detected 31 km S of Segundo, Colorado on December 18, 2023, with origin time 23:55 UTC. The event was offshore. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 23:43:13 UTC | 4.1mb | 85 km E of Falam, Myanmar 22.820°, 94.507° | 87.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.1 earthquake 85 km E of Falam, Myanmar came in on December 18, 2023 at 23:43 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 23:40:34 UTC | 2.2ml | 6 km ESE of Spanish Springs, Nevada 39.623°, -119.633° | 8.2 km | 3 | - | - | ✓ Reviewed | USGS → |
December 18, 2023 brought a magnitude 2.2 earthquake 6 km ESE of Spanish Springs, Nevada, logged at 23:40 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 23:34:37 UTC | 2.3md | 5 km SSE of Salinas, Puerto Rico 17.936°, -66.275° | 13.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 5 km SSE of Salinas, Puerto Rico on December 18, 2023, with origin time 23:34 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 23:25:14 UTC | 4.1mb | 9 km SW of Álftanes, Iceland 64.046°, -22.177° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 seismic event took place 9 km SW of Álftanes, Iceland on December 18, 2023 at 23:25 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 23:09:38 UTC | 2.2ml | 14 km SSE of Volcano, Hawaii 19.316°, -155.207° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 14 km SSE of Volcano, Hawaii came in on December 18, 2023 at 23:09 UTC. It arrived roughly 20 hours after a larger magnitude 2.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 22:20:45 UTC | 4.5mb | 51 km W of Sabang, Indonesia 5.975°, 94.855° | 9.3 km | - | - | - | ✓ Reviewed | USGS → |
December 18, 2023 brought a magnitude 4.5 earthquake 51 km W of Sabang, Indonesia, logged at 22:20 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 22:17:36 UTC | 2.2ml | 37 km SW of Ivanof Bay, Alaska 55.685°, -159.946° | 88.1 km | - | - | - | ✓ Reviewed | USGS → |
On December 18, 2023 at 22:17 UTC, a magnitude 2.2 earthquake struck 37 km SW of Ivanof Bay, Alaska. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 21:54:42 UTC | 2.4ml | 56 km SE of Kokhanok, Alaska 59.095°, -154.048° | 124.3 km | - | - | - | ✓ Reviewed | USGS → |
December 18, 2023 brought a magnitude 2.4 earthquake 56 km SE of Kokhanok, Alaska, logged at 21:54 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 21:36:33 UTC | 2.1ml | 19 km NW of Stanton, Texas 32.259°, -101.935° | 7.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 19 km NW of Stanton, Texas on December 18, 2023 at 21:36 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 21:14:46 UTC | 2.4ml | 22 km E of Coso Junction, CA 36.062°, -117.702° | 1.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 22 km E of Coso Junction, CA on December 18, 2023 at 21:14 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. | ||||||||
2023-12-18 2023-12-18 21:07:16 UTC | 2.1ml | 121 km SE of King Cove, Alaska 54.243°, -161.069° | 25.4 km | - | - | - | ✓ Reviewed | USGS → |
December 18, 2023 brought a magnitude 2.1 earthquake 121 km SE of King Cove, Alaska, logged at 21:07 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 20:27:42 UTC | 2.1ml | 57 km S of Whites City, New Mexico 31.667°, -104.482° | 5.7 km | - | - | - | ✓ Reviewed | USGS → |
On December 18, 2023 at 20:27 UTC, a magnitude 2.1 earthquake struck 57 km S of Whites City, New Mexico. It arrived roughly 5 hours after a larger magnitude 2.8 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. | ||||||||
2023-12-18 2023-12-18 20:24:06 UTC | 4.4mb | south of the Fiji Islands -24.997°, 179.825° | 515.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake south of the Fiji Islands at 20:24 UTC on December 18, 2023. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 20:16:13 UTC | 3.0ml | 45 km SSW of Cantwell, Alaska 63.033°, -149.375° | 84.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 45 km SSW of Cantwell, Alaska came in on December 18, 2023 at 20:16 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 19:42:25 UTC | 2.1ml | 10 km S of Holtville, CA 32.723°, -115.399° | 13.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 10 km S of Holtville, CA on December 18, 2023 at 19:42 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 19:07:53 UTC | 2.0ml | 43 km NNW of Beluga, Alaska 61.485°, -151.478° | 75.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 43 km NNW of Beluga, Alaska on December 18, 2023 at 19:07 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 18:51:25 UTC | 2.0ml | 63 km SE of Ugashik, Alaska 57.093°, -156.694° | 81.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 63 km SE of Ugashik, Alaska with origin time 18:51 UTC on December 18, 2023. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 18:09:26 UTC | 2.2md | 2 km SE of Yauco, Puerto Rico 18.019°, -66.838° | 14.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 2 km SE of Yauco, Puerto Rico on December 18, 2023 at 18:09 UTC. It arrived roughly 2 hours after a larger magnitude 2.4 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. | ||||||||
2023-12-18 2023-12-18 17:38:08 UTC | 4.6mb | southeast of Easter Island -41.282°, -90.583° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.6 earthquake southeast of Easter Island with origin time 17:38 UTC on December 18, 2023. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 17:22:50 UTC | 2.2ml | 37 km S of False Pass, Alaska 54.516°, -163.450° | 82.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 37 km S of False Pass, Alaska on December 18, 2023 at 17:22 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 16:59:39 UTC | 4.5mb | 37 km WNW of Linxia Chengguanzhen, China 35.740°, 102.831° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 18, 2023 at 16:59 UTC, a magnitude 4.5 earthquake struck 37 km WNW of Linxia Chengguanzhen, China. Coming 1 hours after a magnitude 5.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 16:56:52 UTC | 4.2mb | 35 km WNW of Linxia Chengguanzhen, China 35.753°, 102.863° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 35 km WNW of Linxia Chengguanzhen, China on December 18, 2023 at 16:56 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.9 earthquake that occurred about 1 hours earlier. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 16:43:11 UTC | 4.5mb | 32 km NNW of Qu’ao, China 35.675°, 102.832° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 32 km NNW of Qu’ao, China on December 18, 2023 at 16:43 UTC. It arrived roughly 1 hours after a larger magnitude 5.9 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 16:36:18 UTC | 4.6mb | 38 km WNW of Linxia Chengguanzhen, China 35.745°, 102.814° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 18, 2023, worldwide seismic activity registered a magnitude 4.6 earthquake 38 km WNW of Linxia Chengguanzhen, China at 16:36 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.9 earthquake that occurred about 1 hours earlier. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 16:28:01 UTC | 4.4mb | 14 km SSE of Marihatag, Philippines 8.681°, 126.339° | 81.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 14 km SSE of Marihatag, Philippines on December 18, 2023, with origin time 16:28 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 16:24:50 UTC | 4.6mb | 37 km WNW of Linxia Chengguanzhen, China 35.748°, 102.836° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 16:24 UTC on December 18, 2023, a magnitude 4.6 tremor occurred 37 km WNW of Linxia Chengguanzhen, China. Coming 1 hours after a magnitude 5.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-18 2023-12-18 16:15:33 UTC | 2.4md | 7 km SW of Guánica, Puerto Rico 17.918°, -66.957° | 15.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.4 earthquake 7 km SW of Guánica, Puerto Rico with origin time 16:15 UTC on December 18, 2023. The event was offshore. See the M2.4 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 December 18, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.