Earthquakes on December 6, 2021
280
EARTHQUAKES on December 6, 2021
24-hour UTC period · USGS data
LARGEST: M5.6 — Kermadec Islands region
11 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
7
M4.0–4.9
37
M3.0–3.9
7
M2.0–2.9
64
M1.0–1.9
165
Activity Summary
280
Total earthquakes
~250
Daily average
Normal
Activity level
7
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
South Sandwich Islands
6
Northern Mariana Islands
2
Significant Earthquakes (M4.5+)
5.6
Kermadec Islands region
04:19 UTC · 10.9 km deep
5.5
Mid-Indian Ridge
00:55 UTC · 10.0 km deep
5.2
south of Africa
22:35 UTC · 10.0 km deep
5.1
113 km ESE of Macas, Ecuador
06:30 UTC · 10.0 km deep
Felt by 11
5.0
South Sandwich Islands region
01:54 UTC · 44.1 km deep
5.0
71 km NW of Mogok, Myanmar
00:25 UTC · 10.0 km deep
5.0
12 km W of El Coyul, Mexico
00:20 UTC · 13.4 km deep
Felt by 29
4.9
72 km ENE of Mutsu, Japan
14:33 UTC · 57.4 km deep
Earthquake Map — December 6, 2021
All Earthquakes — December 6, 2021
Showing 30 of 115 (filtered from 280)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-12-06 2021-12-06 23:53:35 UTC | 2.1ml | 40 km ESE of Port Alsworth, Alaska 60.124°, -153.607° | 163.6 km | - | - | - | ✓ Reviewed | USGS → |
At 23:53 UTC on December 6, 2021, a magnitude 2.1 tremor occurred 40 km ESE of Port Alsworth, Alaska. This event falls inside the aftershock decay of a nearby magnitude 2.2 earthquake that occurred about 1 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 23:46:39 UTC | 2.0ml | 63 km W of Happy Valley, Alaska 60.031°, -152.857° | 111.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:46 UTC on December 6, 2021, a magnitude 2.0 tremor occurred 63 km W of Happy Valley, Alaska. Coming 18 hours after a magnitude 2.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 23:10:36 UTC | 2.2ml | 32 km ESE of Port Alsworth, Alaska 60.049°, -153.815° | 176.2 km | - | - | - | ✓ Reviewed | USGS → |
December 6, 2021 brought a magnitude 2.2 earthquake 32 km ESE of Port Alsworth, Alaska, logged at 23:10 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 23:02:44 UTC | 2.2ml | 56 km S of Whites City, New Mexico 31.671°, -104.485° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 6, 2021 at 23:02 UTC, a magnitude 2.2 earthquake struck 56 km S of Whites City, New Mexico. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 22:43:42 UTC | 2.4ml | 3 km W of Akhiok, Alaska 56.949°, -154.232° | 0.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 3 km W of Akhiok, Alaska on December 6, 2021 at 22:43 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. | ||||||||
2021-12-06 2021-12-06 22:35:55 UTC | 5.2mww | south of Africa -48.413°, 31.496° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.2 earthquake south of Africa with origin time 22:35 UTC on December 6, 2021. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 22:20:49 UTC | 4.1ml | south of Alaska 55.685°, -155.964° | 28.4 km | - | II | green | ✓ Reviewed | USGS → |
December 6, 2021 brought a magnitude 4.1 earthquake south of Alaska, logged at 22:20 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 22:16:23 UTC | 3.1ml | 8 km E of P?hala, Hawaii 19.199°, -155.402° | 32.6 km | - | - | - | ✓ Reviewed | USGS → |
December 6, 2021 brought a magnitude 3.1 earthquake 8 km E of P?hala, Hawaii, logged at 22:16 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 22:13:42 UTC | 2.5md | 7 km E of P?hala, Hawaii 19.206°, -155.403° | 29.4 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.5 earthquake 7 km E of P?hala, Hawaii at 22:13 UTC on December 6, 2021. It arrived roughly 16 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 M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 22:04:42 UTC | 4.6mb | central East Pacific Rise -9.201°, -110.429° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place near central East Pacific Rise on December 6, 2021 at 22:04 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 21:56:49 UTC | 2.2md | 11 km ENE of P?hala, Hawaii 19.231°, -155.376° | 31.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 11 km ENE of P?hala, Hawaii on December 6, 2021 at 21:56 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 16 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 20:50:31 UTC | 4.3mb | South Sandwich Islands region -59.077°, -25.670° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake in the South Sandwich Islands region with origin time 20:50 UTC on December 6, 2021. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 20:32:15 UTC | 2.3ml | western Texas 31.654°, -104.212° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
On December 6, 2021, worldwide seismic activity registered a magnitude 2.3 earthquake near western Texas at 20:32 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 20:31:42 UTC | 2.6ml | 42 km ESE of Naalehu, Hawaii 18.861°, -155.239° | 11.9 km | - | - | - | ✓ Reviewed | USGS → |
December 6, 2021 brought a magnitude 2.6 earthquake 42 km ESE of Naalehu, Hawaii, logged at 20:31 UTC. It arrived roughly 1 hours after a larger magnitude 2.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 20:12:14 UTC | 2.7ml | 5 km SSW of P?hala, Hawaii 19.160°, -155.500° | 32.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 earthquake was recorded 5 km SSW of P?hala, Hawaii on December 6, 2021 at 20:12 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 14 hours earlier. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 20:04:40 UTC | 4.6mb | 100 km N of Naze, Japan 29.272°, 129.387° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
December 6, 2021 brought a magnitude 4.6 earthquake 100 km N of Naze, Japan, logged at 20:04 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 19:55:09 UTC | 2.8ml | 123 km ESE of Akutan, Alaska 53.775°, -163.997° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.8 earthquake 123 km ESE of Akutan, Alaska at 19:55 UTC on December 6, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.3 earthquake that occurred about 3 hours earlier. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 19:47:02 UTC | 2.7md | 45 km ESE of Naalehu, Hawaii 18.862°, -155.205° | 8.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake 45 km ESE of Naalehu, Hawaii came in on December 6, 2021 at 19:47 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 19:41:49 UTC | 2.3ml | 113 km E of Chignik, Alaska 56.294°, -156.574° | 64.7 km | - | - | - | ✓ Reviewed | USGS → |
At 19:41 UTC on December 6, 2021, a magnitude 2.3 tremor occurred 113 km E of Chignik, Alaska. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 19:39:19 UTC | 4.7mb | 174 km S of Lata, Solomon Islands -12.271°, 166.095° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 6, 2021, worldwide seismic activity registered a magnitude 4.7 earthquake 174 km S of Lata, Solomon Islands at 19:39 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 19:37:41 UTC | 4.2mb | 153 km ENE of Luwuk, Indonesia -0.440°, 124.072° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 153 km ENE of Luwuk, Indonesia came in on December 6, 2021 at 19:37 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 19:23:53 UTC | 4.6mb | 282 km S of ‘Ohonua, Tonga -23.880°, -175.176° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 6, 2021 at 19:23 UTC, a magnitude 4.6 earthquake struck 282 km S of ‘Ohonua, Tonga. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 18:55:32 UTC | 4.0mb | 125 km N of Saipan, Northern Mariana Islands 16.346°, 145.859° | 531.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.0 earthquake 125 km N of Saipan, Northern Mariana Islands with origin time 18:55 UTC on December 6, 2021. 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. | ||||||||
2021-12-06 2021-12-06 18:55:19 UTC | 3.9mb | 136 km N of Saipan, Northern Mariana Islands 16.448°, 145.785° | 520.3 km | - | - | - | ✓ Reviewed | USGS → |
At 18:55 UTC on December 6, 2021, a magnitude 3.9 tremor occurred 136 km N of Saipan, Northern Mariana Islands. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 18:39:54 UTC | 4.8mb | Kermadec Islands region -29.496°, -176.821° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
December 6, 2021 brought a magnitude 4.8 earthquake in the Kermadec Islands region, logged at 18:39 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 17:57:25 UTC | 2.1ml | Alaska Peninsula 57.541°, -155.843° | 81.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake near Alaska Peninsula at 17:57 UTC on December 6, 2021. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 17:47:02 UTC | 2.7ml | 13 km ESE of Watrous, New Mexico 35.740°, -104.850° | 5.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.7 earthquake 13 km ESE of Watrous, New Mexico with origin time 17:47 UTC on December 6, 2021. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 17:45:04 UTC | 2.5ml | 14km NE of Ridgecrest, CA 35.718°, -117.572° | 8.1 km | 5 | - | - | ✓ Reviewed | USGS → |
On December 6, 2021 at 17:45 UTC, a magnitude 2.5 earthquake struck 14km NE of Ridgecrest, CA. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 17:43:48 UTC | 4.2mb | 180 km E of Kokopo, Papua New Guinea -4.210°, 153.886° | 303.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place 180 km E of Kokopo, Papua New Guinea on December 6, 2021 at 17:43 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-06 2021-12-06 17:30:46 UTC | 4.7mb | 118 km W of La Libertad, Mexico 29.814°, -113.911° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 17:30 UTC on December 6, 2021, a magnitude 4.7 tremor occurred 118 km W of La Libertad, Mexico. The event was offshore. See the M4.7 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 6, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.