Earthquakes on December 16, 2023
277
EARTHQUAKES on December 16, 2023
24-hour UTC period · USGS data
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
51
M3.0–3.9
12
M2.0–2.9
59
M1.0–1.9
150
Activity Summary
277
Total earthquakes
~250
Daily average
Normal
Activity level
5
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.7
Maug Islands region, Northern Mariana Islands
09:50 UTC · 10.0 km deep
5.3
south of the Fiji Islands
06:10 UTC · 539.2 km deep
5.0
Maug Islands region, Northern Mariana Islands
15:24 UTC · 10.0 km deep
5.0
Maug Islands region, Northern Mariana Islands
10:17 UTC · 10.0 km deep
5.0
145 km WNW of Pariaman, Indonesia
06:45 UTC · 51.2 km deep
Felt by 1
4.9
Maug Islands region, Northern Mariana Islands
15:13 UTC · 10.0 km deep
4.8
94 km E of Aras-asan, Philippines
11:43 UTC · 10.0 km deep
4.8
Maug Islands region, Northern Mariana Islands
10:15 UTC · 10.0 km deep
Earthquake Map — December 16, 2023
All Earthquakes — December 16, 2023
Showing 30 of 127 (filtered from 277)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-12-16 2023-12-16 23:56:40 UTC | 4.4mb | 36 km WNW of Angoram, Papua New Guinea -3.965°, 143.751° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
December 16, 2023 brought a magnitude 4.4 earthquake 36 km WNW of Angoram, Papua New Guinea, logged at 23:56 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 23:46:55 UTC | 2.4md | 9 km SSE of Maria Antonia, Puerto Rico 17.898°, -66.847° | 12.9 km | - | - | - | ✓ Reviewed | USGS → |
December 16, 2023 brought a magnitude 2.4 earthquake 9 km SSE of Maria Antonia, Puerto Rico, logged at 23:46 UTC. Coming 17 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 23:43:23 UTC | 4.5mb | 9 km NE of Hinatuan, Philippines 8.440°, 126.382° | 75.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 9 km NE of Hinatuan, Philippines came in on December 16, 2023 at 23:43 UTC. Coming 15 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 22:47:12 UTC | 2.1md | 11 km NE of Pāhala, Hawaii 19.274°, -155.402° | 29.3 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.1 earthquake 11 km NE of Pāhala, Hawaii with origin time 22:47 UTC on December 16, 2023. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 4 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 22:42:07 UTC | 2.5ml | 54 km NW of Toyah, Texas 31.672°, -104.190° | 4.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 54 km NW of Toyah, Texas with origin time 22:42 UTC on December 16, 2023. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 14 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 22:38:53 UTC | 2.3ml | 54 km NW of Toyah, Texas 31.668°, -104.198° | 6.8 km | - | - | - | ✓ Reviewed | USGS → |
On December 16, 2023, worldwide seismic activity registered a magnitude 2.3 earthquake 54 km NW of Toyah, Texas at 22:38 UTC. It arrived roughly 14 hours after a larger magnitude 2.6 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 22:36:27 UTC | 2.2ml | 90 km SW of Adak, Alaska 51.328°, -177.609° | 38.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 90 km SW of Adak, Alaska on December 16, 2023, with origin time 22:36 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 22:30:39 UTC | 4.2mb | 77 km NW of Luwuk, Indonesia -0.544°, 122.220° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 16, 2023, worldwide seismic activity registered a magnitude 4.2 earthquake 77 km NW of Luwuk, Indonesia at 22:30 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 22:15:43 UTC | 4.6mwr | 64 km NNW of Lebu, Chile -37.117°, -74.051° | 10.6 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake 64 km NNW of Lebu, Chile at 22:15 UTC on December 16, 2023. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 22:15:40 UTC | 2.2ml | 63 km ENE of Susitna North, Alaska 62.377°, -148.709° | 41.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 63 km ENE of Susitna North, Alaska came in on December 16, 2023 at 22:15 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 21:50:13 UTC | 2.6ml | 18 km SSW of False Pass, Alaska 54.703°, -163.521° | 92.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 18 km SSW of False Pass, Alaska on December 16, 2023 at 21:50 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 21:25:06 UTC | 2.4ml | 49 km W of Mentone, Texas 31.737°, -104.115° | 6.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.4 event was detected 49 km W of Mentone, Texas on December 16, 2023, with origin time 21:25 UTC. Coming 13 hours after a magnitude 2.6 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. | ||||||||
2023-12-16 2023-12-16 20:58:13 UTC | 4.4mb | south of the Fiji Islands -23.466°, -179.904° | 521.9 km | - | - | - | ✓ Reviewed | USGS → |
On December 16, 2023 at 20:58 UTC, a magnitude 4.4 earthquake struck south of the Fiji Islands. 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. | ||||||||
2023-12-16 2023-12-16 20:45:40 UTC | 4.1mb | south of the Fiji Islands -25.561°, -179.633° | 478.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake south of the Fiji Islands with origin time 20:45 UTC on December 16, 2023. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 20:17:00 UTC | 4.7mb | 142 km ENE of Saipan, Northern Mariana Islands 15.697°, 146.985° | 41.1 km | - | - | - | ✓ Reviewed | USGS → |
December 16, 2023 brought a magnitude 4.7 earthquake 142 km ENE of Saipan, Northern Mariana Islands, logged at 20:17 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 20:16:21 UTC | 4.1mb | Fiji region -18.843°, -177.749° | 582.1 km | - | - | - | ✓ Reviewed | USGS → |
On December 16, 2023, worldwide seismic activity registered a magnitude 4.1 earthquake in the Fiji region at 20:16 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 19:26:53 UTC | 2.1ml | 40 km WNW of Sitka, Alaska 57.152°, -135.975° | 26.7 km | - | - | - | ✓ Reviewed | USGS → |
On December 16, 2023, worldwide seismic activity registered a magnitude 2.1 earthquake 40 km WNW of Sitka, Alaska at 19:26 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 19:24:40 UTC | 4.7mww | 39 km E of Port Alsworth, Alaska 60.248°, -153.613° | 188.2 km | 88 | II | - | ✓ Reviewed | USGS → |
On December 16, 2023 at 19:24 UTC, a magnitude 4.7 earthquake struck 39 km E of Port Alsworth, Alaska. A tsunami evaluation was automatically initiated given the magnitude and location. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 19:16:06 UTC | 3.2ml | 130 km W of Petrolia, CA 40.372°, -125.822° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.2 earthquake 130 km W of Petrolia, CA with origin time 19:16 UTC on December 16, 2023. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 19:12:58 UTC | 2.1ml | 28 km E of Pedro Bay, Alaska 59.813°, -153.605° | 136.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 28 km E of Pedro Bay, Alaska at 19:12 UTC on December 16, 2023. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 19:10:39 UTC | 2.4ml | 13 km NE of Pāhala, Hawaii 19.291°, -155.387° | 2.5 km | - | - | - | Auto | USGS → |
On December 16, 2023 at 19:10 UTC, a magnitude 2.4 earthquake struck 13 km NE of Pāhala, Hawaii. 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 M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 19:07:23 UTC | 4.2mb | 271 km WNW of Houma, Tonga -20.575°, -177.830° | 583.1 km | - | - | - | ✓ Reviewed | USGS → |
At 19:07 UTC on December 16, 2023, a magnitude 4.2 tremor occurred 271 km WNW of Houma, Tonga. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 19:03:41 UTC | 3.4ml | 159 km S of False Pass, Alaska 53.422°, -163.377° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
December 16, 2023 brought a magnitude 3.4 earthquake 159 km S of False Pass, Alaska, logged at 19:03 UTC. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 18:58:48 UTC | 3.3ml | 19 km ENE of Wright, Wyoming 43.818°, -105.268° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 16, 2023 at 18:58 UTC, a magnitude 3.3 earthquake struck 19 km ENE of Wright, Wyoming. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 18:52:52 UTC | 4.4mb | Fiji region -20.506°, -178.302° | 535.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded in the Fiji region on December 16, 2023 at 18:52 UTC. 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. | ||||||||
2023-12-16 2023-12-16 18:43:09 UTC | 2.4md | 0 km NE of Indios, Puerto Rico 18.000°, -66.815° | 17.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 0 km NE of Indios, Puerto Rico on December 16, 2023 at 18:43 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 12 hours earlier. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 18:29:35 UTC | 4.3mb | south of the Fiji Islands -23.485°, -179.726° | 546.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake south of the Fiji Islands came in on December 16, 2023 at 18:29 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 18:28:33 UTC | 2.5ml | 24 km WSW of Anchor Point, Alaska 59.674°, -152.219° | 59.4 km | - | - | - | ✓ Reviewed | USGS → |
On December 16, 2023, worldwide seismic activity registered a magnitude 2.5 earthquake 24 km WSW of Anchor Point, Alaska at 18:28 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 17:47:16 UTC | 4.2mb | 78 km SW of Kokopo, Papua New Guinea -4.758°, 151.696° | 176.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake 78 km SW of Kokopo, Papua New Guinea at 17:47 UTC on December 16, 2023. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-12-16 2023-12-16 17:30:02 UTC | 4.0mb | Kermadec Islands region -30.531°, -179.893° | 349.1 km | - | - | - | ✓ Reviewed | USGS → |
At 17:30 UTC on December 16, 2023, a magnitude 4.0 tremor occurred in the Kermadec Islands region. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.0 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 December 16, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.