Earthquakes on December 12, 2021
244
EARTHQUAKES on December 12, 2021
24-hour UTC period · USGS data
LARGEST: M6.6 — west of Macquarie Island
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
48
M3.0–3.9
15
M2.0–2.9
54
M1.0–1.9
121
Activity Summary
244
Total earthquakes
~250
Daily average
Normal
Activity level
6
M5.0+ events
Significant Earthquakes (M4.5+)
6.6
west of Macquarie Island
08:58 UTC · 10.0 km deep
5.3
south of Africa
22:11 UTC · 10.0 km deep
5.3
west of Macquarie Island
09:45 UTC · 10.0 km deep
5.0
237 km SSW of Severo-Kuril’sk, Russia
19:04 UTC · 80.8 km deep
5.0
South Sandwich Islands region
08:46 UTC · 35.0 km deep
5.0
155 km ESE of Hirara, Japan
06:47 UTC · 10.0 km deep
4.9
95 km S of Waingapu, Indonesia
19:34 UTC · 10.0 km deep
4.9
Mauritius - Reunion region
09:29 UTC · 10.0 km deep
Earthquake Map — December 12, 2021
All Earthquakes — December 12, 2021
Showing 30 of 123 (filtered from 244)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-12-12 2021-12-12 23:50:03 UTC | 4.4mb | Sea of Okhotsk 53.371°, 153.185° | 539.8 km | - | - | - | ✓ Reviewed | USGS → |
On December 12, 2021, worldwide seismic activity registered a magnitude 4.4 earthquake near Sea of Okhotsk at 23:50 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 23:23:29 UTC | 2.1md | Island of Hawaii, Hawaii 19.175°, -155.464° | 34.3 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.1 earthquake near Island of Hawaii, Hawaii came in on December 12, 2021 at 23:23 UTC. It arrived roughly 16 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 23:19:37 UTC | 2.6mb_lg | 8 km SW of Gypsum, Kansas 38.654°, -97.507° | 5.0 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 8 km SW of Gypsum, Kansas on December 12, 2021 at 23:19 UTC. It arrived roughly 21 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 23:13:14 UTC | 2.7ml | 2 km SSE of P?hala, Hawaii 19.184°, -155.473° | 35.8 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 2 km SSE of P?hala, Hawaii at 23:13 UTC on December 12, 2021. It arrived roughly 16 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 22:55:35 UTC | 4.4mb | 59 km SSE of Amahai, Indonesia -3.853°, 129.083° | 111.6 km | - | - | - | ✓ Reviewed | USGS → |
At 22:55 UTC on December 12, 2021, a magnitude 4.4 tremor occurred 59 km SSE of Amahai, Indonesia. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 22:49:10 UTC | 2.3ml | 6 km ENE of P?hala, Hawaii 19.217°, -155.421° | 33.4 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.3 earthquake 6 km ENE of P?hala, Hawaii came in on December 12, 2021 at 22:49 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 16 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 22:37:00 UTC | 4.6mb | 113 km WSW of Bengkulu, Indonesia -4.184°, 101.317° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected 113 km WSW of Bengkulu, Indonesia on December 12, 2021, with origin time 22:37 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 22:30:44 UTC | 4.8mww | Ryukyu Islands, Japan 24.178°, 126.647° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
December 12, 2021 brought a magnitude 4.8 earthquake near Ryukyu Islands, Japan, logged at 22:30 UTC. It arrived roughly 16 hours after a larger magnitude 5.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 22:21:57 UTC | 2.7ml | 12 km WSW of Honomu, Hawaii 19.851°, -155.232° | 43.5 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 12 km WSW of Honomu, Hawaii on December 12, 2021, with origin time 22:21 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 22:21:35 UTC | 2.4ml | 18 km SSE of Princeton, Canada 49.304°, -120.424° | -0.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 18 km SSE of Princeton, Canada came in on December 12, 2021 at 22:21 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. | ||||||||
2021-12-12 2021-12-12 22:11:35 UTC | 5.3mww | south of Africa -53.021°, 22.131° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
A magnitude 5.3 earthquake was recorded south of Africa on December 12, 2021 at 22:11 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 21:33:36 UTC | 3.1md | 3 km ESE of Salinas, Puerto Rico 17.968°, -66.267° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.1 earthquake 3 km ESE of Salinas, Puerto Rico at 21:33 UTC on December 12, 2021. Coming 5 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 21:26:08 UTC | 2.0ml | 26 km WSW of Coyanosa, Texas 31.191°, -103.333° | 4.6 km | - | - | - | ✓ Reviewed | USGS → |
December 12, 2021 brought a magnitude 2.0 earthquake 26 km WSW of Coyanosa, Texas, logged at 21:26 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 21:24:37 UTC | 2.5ml | 70 km ESE of Adak, Alaska 51.535°, -175.780° | 34.6 km | - | - | - | ✓ Reviewed | USGS → |
On December 12, 2021, worldwide seismic activity registered a magnitude 2.5 earthquake 70 km ESE of Adak, Alaska at 21:24 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 21:06:13 UTC | 2.2ml | 64 km NW of Elfin Cove, Alaska 58.585°, -137.168° | 4.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 64 km NW of Elfin Cove, Alaska with origin time 21:06 UTC on December 12, 2021. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 20:50:01 UTC | 2.9md | 7 km WSW of Guánica, Puerto Rico 17.946°, -66.977° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
On December 12, 2021 at 20:50 UTC, a magnitude 2.9 earthquake struck 7 km WSW of Guánica, Puerto Rico. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 16 hours earlier. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 20:48:48 UTC | 2.1ml | Oklahoma 35.043°, -97.830° | 7.4 km | 3 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected near Oklahoma on December 12, 2021, with origin time 20:48 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 20:32:39 UTC | 2.7md | 3 km SSW of Guánica, Puerto Rico 17.945°, -66.917° | 13.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 12, 2021 at 20:32 UTC, a magnitude 2.7 earthquake struck 3 km SSW of Guánica, Puerto Rico. Coming 15 hours after a magnitude 3.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 20:12:25 UTC | 2.2ml | 96 km W of Elfin Cove, Alaska 58.210°, -137.982° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
On December 12, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 96 km W of Elfin Cove, Alaska at 20:12 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 19:42:22 UTC | 4.5mb | 114 km S of Waingapu, Indonesia -10.671°, 120.452° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 12, 2021 at 19:42 UTC, a magnitude 4.5 earthquake struck 114 km S of Waingapu, Indonesia. Coming 1 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. | ||||||||
2021-12-12 2021-12-12 19:34:25 UTC | 4.9mb | 95 km S of Waingapu, Indonesia -10.516°, 120.309° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.9 event was detected 95 km S of Waingapu, Indonesia on December 12, 2021, with origin time 19:34 UTC. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 19:05:43 UTC | 4.5mb | 120 km NE of Calama, Chile -21.724°, -68.063° | 116.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 120 km NE of Calama, Chile on December 12, 2021 at 19:05 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 19:04:41 UTC | 5.0mww | 237 km SSW of Severo-Kuril’sk, Russia 48.858°, 154.398° | 80.8 km | - | - | - | ✓ Reviewed | USGS → |
On December 12, 2021, worldwide seismic activity registered a magnitude 5.0 earthquake 237 km SSW of Severo-Kuril’sk, Russia at 19:04 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 18:46:35 UTC | 4.6mb | 108 km S of Waingapu, Indonesia -10.631°, 120.386° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake 108 km S of Waingapu, Indonesia came in on December 12, 2021 at 18:46 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 18:25:22 UTC | 2.9ml | 79 km SE of King Cove, Alaska 54.489°, -161.584° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 79 km SE of King Cove, Alaska on December 12, 2021 at 18:25 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 18:22:25 UTC | 4.5mb | 101 km S of Waingapu, Indonesia -10.569°, 120.361° | 49.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake 101 km S of Waingapu, Indonesia with origin time 18:22 UTC on December 12, 2021. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 18:20:26 UTC | 4.5mb | 74 km SE of Severo-Kuril’sk, Russia 50.258°, 156.953° | 93.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 12, 2021, worldwide seismic activity registered a magnitude 4.5 earthquake 74 km SE of Severo-Kuril’sk, Russia at 18:20 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 17:52:56 UTC | 3.0md | 2 km E of Manchester, Ohio 38.691°, -83.582° | 14.5 km | 420 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 2 km E of Manchester, Ohio came in on December 12, 2021 at 17:52 UTC. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 17:52:14 UTC | 4.5mb | off the coast of Oregon 44.234°, -129.543° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 17:52 UTC on December 12, 2021, a magnitude 4.5 tremor occurred near off the coast of Oregon. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-12 2021-12-12 17:40:01 UTC | 4.6mb | off the east coast of Honshu, Japan 35.827°, 144.275° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place near off the east coast of Honshu, Japan on December 12, 2021 at 17:40 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 12, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.