Earthquakes on December 8, 2021
360
EARTHQUAKES on December 8, 2021
24-hour UTC period · USGS data
LARGEST: M5.8 — off the coast of Oregon
10 km deep · 13 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
19
M4.0–4.9
78
M3.0–3.9
59
M2.0–2.9
63
M1.0–1.9
141
Activity Summary
360
Total earthquakes
~250
Daily average
Elevated
Activity level
19
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.8
off the coast of Oregon
01:21 UTC · 10.0 km deep
Felt by 13
5.8
off the coast of Oregon
00:36 UTC · 10.0 km deep
Felt by 6
5.5
off the coast of Oregon
07:18 UTC · 10.0 km deep
Felt by 4
5.5
off the coast of Oregon
05:43 UTC · 10.0 km deep
5.4
off the coast of Oregon
05:15 UTC · 10.0 km deep
Felt by 3
5.3
central East Pacific Rise
23:25 UTC · 10.0 km deep
5.3
off the coast of Oregon
15:38 UTC · 10.0 km deep
Felt by 4
5.3
off the coast of Oregon
05:33 UTC · 10.0 km deep
Earthquake Map — December 8, 2021
All Earthquakes — December 8, 2021
Showing 30 of 219 (filtered from 360)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-12-08 2021-12-08 23:44:45 UTC | 4.7mb | 121 km NNE of Bima, Indonesia -7.508°, 119.273° | 282.7 km | - | - | - | ✓ Reviewed | USGS → |
At 23:44 UTC on December 8, 2021, a magnitude 4.7 tremor occurred 121 km NNE of Bima, Indonesia. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 23:38:26 UTC | 4.1mb | 7 km E of San Juan Jaltepec, Mexico 17.357°, -95.590° | 103.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 seismic event took place 7 km E of San Juan Jaltepec, Mexico on December 8, 2021 at 23:38 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 23:36:02 UTC | 4.0mb | 22 km S of Nueve de Julio, Argentina -31.874°, -68.360° | 112.1 km | - | - | - | ✓ Reviewed | USGS → |
On December 8, 2021 at 23:36 UTC, a magnitude 4.0 earthquake struck 22 km S of Nueve de Julio, Argentina. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 23:32:02 UTC | 2.6ml | 63 km N of Petersville, Alaska 63.055°, -150.993° | 129.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 63 km N of Petersville, Alaska on December 8, 2021 at 23:32 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 23:25:16 UTC | 5.3mww | central East Pacific Rise -2.948°, -102.472° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.3 earthquake near central East Pacific Rise at 23:25 UTC on December 8, 2021. See the M5.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 23:03:12 UTC | 4.6mb | 92 km ENE of Petropavlovsk-Kamchatsky, Russia 53.413°, 159.879° | 68.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake 92 km ENE of Petropavlovsk-Kamchatsky, Russia came in on December 8, 2021 at 23:03 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 23:02:48 UTC | 3.5ml | 63 km NNW of Dutch Harbor, Alaska 54.449°, -166.741° | 183.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.5 seismic event took place 63 km NNW of Dutch Harbor, Alaska on December 8, 2021 at 23:02 UTC. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 22:45:46 UTC | 4.4mb | 29 km SSW of Sarangani, Philippines 5.150°, 125.379° | 68.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 8, 2021, worldwide seismic activity registered a magnitude 4.4 earthquake 29 km SSW of Sarangani, Philippines at 22:45 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 22:22:08 UTC | 5.0mww | off the coast of Oregon 44.048°, -129.278° | 10.0 km | 8 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 5.0 earthquake near off the coast of Oregon came in on December 8, 2021 at 22:22 UTC. Coming 17 hours after a magnitude 5.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 22:21:38 UTC | 4.6mb | off the coast of Oregon 44.014°, -129.242° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place near off the coast of Oregon on December 8, 2021 at 22:21 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.1 earthquake that occurred about 17 hours earlier. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 22:18:01 UTC | 3.2ml | 22 km WNW of Clam Gulch, Alaska 60.317°, -151.755° | 69.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.2 earthquake 22 km WNW of Clam Gulch, Alaska at 22:18 UTC on December 8, 2021. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 22:12:16 UTC | 4.8mww | off the coast of Oregon 44.322°, -129.476° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.8 earthquake near off the coast of Oregon with origin time 22:12 UTC on December 8, 2021. This event falls inside the aftershock decay of a nearby magnitude 5.8 earthquake that occurred about 21 hours earlier. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 22:00:53 UTC | 2.1md | 4 km SSW of P?hala, Hawaii 19.164°, -155.491° | 32.9 km | - | - | - | Auto | USGS → |
On December 8, 2021 at 22:00 UTC, a magnitude 2.1 earthquake struck 4 km SSW of P?hala, Hawaii. It arrived roughly 3 hours after a larger magnitude 3.5 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. | ||||||||
2021-12-08 2021-12-08 21:56:45 UTC | 2.1md | 6 km S of P?hala, Hawaii 19.142°, -155.488° | 34.8 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.1 earthquake 6 km S of P?hala, Hawaii with origin time 21:56 UTC on December 8, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.5 earthquake that occurred about 3 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:42:41 UTC | 2.8ml | 139 km ESE of McCarthy, Alaska 61.139°, -140.400° | 1.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 earthquake was recorded 139 km ESE of McCarthy, Alaska on December 8, 2021 at 21:42 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:42:33 UTC | 2.1md | 3 km SSE of P?hala, Hawaii 19.172°, -155.470° | 35.1 km | - | - | - | Auto | USGS → |
A magnitude 2.1 earthquake was recorded 3 km SSE of P?hala, Hawaii on December 8, 2021 at 21:42 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.5 earthquake that occurred about 3 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:39:23 UTC | 4.2mb | 98 km WNW of Kirakira, Solomon Islands -10.167°, 161.070° | 33.8 km | - | - | - | ✓ Reviewed | USGS → |
December 8, 2021 brought a magnitude 4.2 earthquake 98 km WNW of Kirakira, Solomon Islands, logged at 21:39 UTC. It arrived roughly 1 hours after a larger magnitude 4.4 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:36:25 UTC | 4.4mb | 102 km WNW of Kirakira, Solomon Islands -10.153°, 161.036° | 40.5 km | - | - | - | ✓ Reviewed | USGS → |
At 21:36 UTC on December 8, 2021, a magnitude 4.4 tremor occurred 102 km WNW of Kirakira, Solomon Islands. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:30:15 UTC | 2.3md | 8 km ESE of P?hala, Hawaii 19.184°, -155.399° | 31.7 km | - | - | - | Auto | USGS → |
A magnitude 2.3 seismic event took place 8 km ESE of P?hala, Hawaii on December 8, 2021 at 21:30 UTC. Coming 3 hours after a magnitude 3.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:19:34 UTC | 4.4mb | off the coast of Oregon 43.921°, -129.258° | 10.0 km | 2 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake near off the coast of Oregon at 21:19 UTC on December 8, 2021. It arrived roughly 6 hours after a larger magnitude 4.8 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:12:01 UTC | 4.1mb | off the coast of Oregon 44.150°, -129.083° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
December 8, 2021 brought a magnitude 4.1 earthquake near off the coast of Oregon, logged at 21:12 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.1 earthquake that occurred about 15 hours earlier. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:07:11 UTC | 4.3mb | 58 km S of Klyuchi, Russia 55.798°, 160.907° | 110.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 58 km S of Klyuchi, Russia on December 8, 2021, with origin time 21:07 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 21:03:05 UTC | 4.3mb | off the coast of Oregon 44.055°, -129.492° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake near off the coast of Oregon came in on December 8, 2021 at 21:03 UTC. It arrived roughly 14 hours after a larger magnitude 4.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 20:49:59 UTC | 2.7md | 10km NNE of New Idria, CA 36.498°, -120.614° | 9.2 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 10km NNE of New Idria, CA at 20:49 UTC on December 8, 2021. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 20:48:48 UTC | 5.0mb | South Sandwich Islands region -57.270°, -25.550° | 57.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.0 seismic event took place in the South Sandwich Islands region on December 8, 2021 at 20:48 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 20:25:43 UTC | 3.0mb_lg | 8 km SW of Gypsum, Kansas 38.661°, -97.504° | 5.0 km | 29 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.0 earthquake 8 km SW of Gypsum, Kansas with origin time 20:25 UTC on December 8, 2021. Coming 7 hours after a magnitude 4.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 20:21:54 UTC | 2.3md | 3 km NNE of P?hala, Hawaii 19.229°, -155.463° | 32.8 km | - | - | - | Auto | USGS → |
December 8, 2021 brought a magnitude 2.3 earthquake 3 km NNE of P?hala, Hawaii, logged at 20:21 UTC. It arrived roughly 2 hours after a larger magnitude 3.5 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. | ||||||||
2021-12-08 2021-12-08 20:19:56 UTC | 4.5mb | off the coast of Oregon 44.337°, -129.542° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded near off the coast of Oregon on December 8, 2021 at 20:19 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.8 earthquake that occurred about 19 hours earlier. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-08 2021-12-08 19:52:54 UTC | 2.5ml | 54 km NNE of Kobuk, Alaska 67.325°, -156.221° | 1.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 54 km NNE of Kobuk, Alaska at 19:52 UTC on December 8, 2021. 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. | ||||||||
2021-12-08 2021-12-08 19:48:48 UTC | 4.5mb | off the coast of Oregon 43.981°, -129.111° | 10.0 km | 3 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake near off the coast of Oregon with origin time 19:48 UTC on December 8, 2021. Coming 5 hours after a magnitude 4.8 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. | ||||||||
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 8, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.