Earthquakes on December 4, 2021
336
EARTHQUAKES on December 4, 2021
24-hour UTC period · USGS data
LARGEST: M6.0 — 261 km N of Tobelo, Indonesia
149 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
51
M3.0–3.9
13
M2.0–2.9
68
M1.0–1.9
198
Activity Summary
336
Total earthquakes
~250
Daily average
Elevated
Activity level
6
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.0
261 km N of Tobelo, Indonesia
23:47 UTC · 149.0 km deep
5.7
South Sandwich Islands region
14:27 UTC · 10.0 km deep
5.1
73 km SSW of Topolobampo, Mexico
08:11 UTC · 10.0 km deep
Felt by 8
5.1
185 km ESE of Kandrian, Papua New Guinea
00:41 UTC · 10.0 km deep
5.1
South Sandwich Islands region
04:32 UTC · 10.0 km deep
5.0
South Sandwich Islands region
04:56 UTC · 10.0 km deep
4.9
105 km S of La Libertad, El Salvador
18:44 UTC · 10.0 km deep
Felt by 1
4.9
122 km WNW of Sinabang, Indonesia
15:29 UTC · 10.0 km deep
Earthquake Map — December 4, 2021
All Earthquakes — December 4, 2021
Showing 30 of 138 (filtered from 336)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-12-04 2021-12-04 23:58:36 UTC | 2.5ml | 2 km SSW of P?hala, Hawaii 19.180°, -155.492° | 39.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 2 km SSW of P?hala, Hawaii on December 4, 2021, with origin time 23:58 UTC. Coming 21 hours after a magnitude 3.1 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. | ||||||||
2021-12-04 2021-12-04 23:51:17 UTC | 4.0mb | 119 km W of La Libertad, Mexico 29.807°, -113.921° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.0 earthquake 119 km W of La Libertad, Mexico at 23:51 UTC on December 4, 2021. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 16 hours earlier. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 23:47:55 UTC | 6.0mww | 261 km N of Tobelo, Indonesia 4.093°, 128.136° | 149.0 km | - | III | green | ✓ Reviewed | USGS → |
On December 4, 2021 at 23:47 UTC, a magnitude 6.0 earthquake struck 261 km N of Tobelo, Indonesia. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. It is the largest earthquake currently listed for worldwide seismic activity on December 4, 2021. See the M6.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 23:41:58 UTC | 2.7ml | 34 km SE of Mina, Nevada 38.163°, -117.835° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 earthquake was recorded 34 km SE of Mina, Nevada on December 4, 2021 at 23:41 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 23:28:47 UTC | 2.0ml | 136 km WSW of Adak, Alaska 51.271°, -178.347° | 19.5 km | - | - | - | ✓ Reviewed | USGS → |
On December 4, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 136 km WSW of Adak, Alaska at 23:28 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 23:17:52 UTC | 2.6ml | 34 km SE of Mina, Nevada 38.159°, -117.840° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 4, 2021, worldwide seismic activity registered a magnitude 2.6 earthquake 34 km SE of Mina, Nevada at 23:17 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 23:06:21 UTC | 4.6mb | South Sandwich Islands region -57.346°, -25.391° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
December 4, 2021 brought a magnitude 4.6 earthquake in the South Sandwich Islands region, logged at 23:06 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 22:43:58 UTC | 2.1ml | 57 km S of Whites City, New Mexico 31.662°, -104.461° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
On December 4, 2021, worldwide seismic activity registered a magnitude 2.1 earthquake 57 km S of Whites City, New Mexico at 22:43 UTC. It arrived roughly 3 hours after a larger magnitude 2.5 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. | ||||||||
2021-12-04 2021-12-04 22:03:37 UTC | 4.6mb | Izu Islands, Japan region 31.111°, 142.427° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 4, 2021 at 22:03 UTC, a magnitude 4.6 earthquake struck in the Izu Islands, Japan region. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 21:57:21 UTC | 4.4mb | 108 km W of La Libertad, Mexico 29.832°, -113.809° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 108 km W of La Libertad, Mexico on December 4, 2021 at 21:57 UTC. Coming 14 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 M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 21:53:49 UTC | 2.0ml | 64 km S of Shungnak, Alaska 66.318°, -157.397° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
At 21:53 UTC on December 4, 2021, a magnitude 2.0 tremor occurred 64 km S of Shungnak, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 21:52:57 UTC | 4.5mb | 103 km NNW of Neiafu, Tonga -17.780°, -174.346° | 79.5 km | - | - | - | ✓ Reviewed | USGS → |
December 4, 2021 brought a magnitude 4.5 earthquake 103 km NNW of Neiafu, Tonga, logged at 21:52 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 21:31:22 UTC | 2.3md | Island of Hawaii, Hawaii 19.179°, -155.469° | 30.0 km | - | - | - | Auto | USGS → |
December 4, 2021 brought a magnitude 2.3 earthquake near Island of Hawaii, Hawaii, logged at 21:31 UTC. 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. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 20:31:06 UTC | 2.2md | 3 km SW of Indios, Puerto Rico 17.971°, -66.844° | 17.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 4, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 3 km SW of Indios, Puerto Rico at 20:31 UTC. Coming 13 hours after a magnitude 3.0 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. | ||||||||
2021-12-04 2021-12-04 20:24:36 UTC | 4.3mb | 76 km SW of Yonakuni, Japan 23.969°, 122.480° | 25.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 76 km SW of Yonakuni, Japan at 20:24 UTC on December 4, 2021. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 20:23:11 UTC | 2.3md | 8 km E of P?hala, Hawaii 19.189°, -155.399° | 31.1 km | - | - | - | Auto | USGS → |
On December 4, 2021 at 20:23 UTC, a magnitude 2.3 earthquake struck 8 km E of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 17 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 20:14:21 UTC | 4.4mb | 107 km N of Naze, Japan 29.333°, 129.443° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
December 4, 2021 brought a magnitude 4.4 earthquake 107 km N of Naze, Japan, logged at 20:14 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 19:41:32 UTC | 2.1md | 7 km E of P?hala, Hawaii 19.200°, -155.403° | 32.2 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.1 earthquake 7 km E of P?hala, Hawaii with origin time 19:41 UTC on December 4, 2021. Coming 17 hours after a magnitude 3.1 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. | ||||||||
2021-12-04 2021-12-04 19:28:05 UTC | 2.5ml | 55 km S of Whites City, New Mexico 31.676°, -104.406° | 6.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 55 km S of Whites City, New Mexico came in on December 4, 2021 at 19:28 UTC. It arrived roughly 14 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 M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 19:27:28 UTC | 4.2mb | 168 km NNW of Sola, Vanuatu -12.440°, 167.047° | 222.1 km | - | - | - | ✓ Reviewed | USGS → |
On December 4, 2021 at 19:27 UTC, a magnitude 4.2 earthquake struck 168 km NNW of Sola, Vanuatu. This is the deepest earthquake in the current dataset — an intermediate depth event. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 19:24:16 UTC | 2.0ml | western Texas 31.681°, -104.456° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake near western Texas at 19:24 UTC on December 4, 2021. It arrived roughly 11 hours after a larger magnitude 2.2 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. | ||||||||
2021-12-04 2021-12-04 19:22:05 UTC | 4.1mb | 111 km W of Tocopilla, Chile -22.018°, -71.270° | 18.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 111 km W of Tocopilla, Chile with origin time 19:22 UTC on December 4, 2021. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 18:44:49 UTC | 4.9mb | 105 km S of La Libertad, El Salvador 12.546°, -89.500° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.9 event was detected 105 km S of La Libertad, El Salvador on December 4, 2021, with origin time 18:44 UTC. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 18:25:12 UTC | 2.1ml | 41 km N of Valdez, Alaska 61.500°, -146.414° | 10.4 km | - | - | - | ✓ Reviewed | USGS → |
At 18:25 UTC on December 4, 2021, a magnitude 2.1 tremor occurred 41 km N of Valdez, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 18:09:35 UTC | 4.0mb | 31 km ESE of Farkh?r, Afghanistan 36.492°, 70.192° | 221.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.0 event was detected 31 km ESE of Farkh?r, Afghanistan on December 4, 2021, with origin time 18:09 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 17:58:16 UTC | 3.8mb | 285 km WSW of Adak, Alaska 50.933°, 179.544° | 28.8 km | - | I | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.8 earthquake 285 km WSW of Adak, Alaska came in on December 4, 2021 at 17:58 UTC. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 17:40:40 UTC | 2.5ml | 133 km SE of Akutan, Alaska 53.171°, -164.567° | 15.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 133 km SE of Akutan, Alaska on December 4, 2021 at 17:40 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 17:39:59 UTC | 2.4ml | 55 km NE of King Cove, Alaska 55.465°, -161.795° | 11.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 55 km NE of King Cove, Alaska at 17:39 UTC on December 4, 2021. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 17:23:30 UTC | 4.4mb | Kermadec Islands region -31.619°, -179.627° | 204.1 km | - | - | - | ✓ Reviewed | USGS → |
On December 4, 2021 at 17:23 UTC, a magnitude 4.4 earthquake struck in the Kermadec Islands region. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-04 2021-12-04 16:56:23 UTC | 4.6mb | Kermadec Islands region -29.810°, -176.831° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded in the Kermadec Islands region on December 4, 2021 at 16:56 UTC. 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 December 4, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.