Earthquakes on December 1, 2020
333
EARTHQUAKES on December 1, 2020
24-hour UTC period · USGS data
LARGEST: M6.4 — 46 km ESE of Nikolski, Alaska
23 km deep · 11 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
29
M3.0–3.9
23
M2.0–2.9
113
M1.0–1.9
163
Activity Summary
333
Total earthquakes
~250
Daily average
Elevated
Activity level
5
M5.0+ events
Significant Earthquakes (M4.5+)
6.4
46 km ESE of Nikolski, Alaska
16:22 UTC · 23.0 km deep
Felt by 11
6.0
Balleny Islands region
20:52 UTC · 10.0 km deep
Felt by 1
5.7
south of Alaska
16:35 UTC · 10.0 km deep
Felt by 1
5.1
25 km S of Mina, Nevada
23:32 UTC · 5.0 km deep
Felt by 130
5.1
South Sandwich Islands region
17:39 UTC · 73.9 km deep
4.8
158 km W of Pangai, Tonga
21:07 UTC · 219.6 km deep
4.7
southern Mid-Atlantic Ridge
11:21 UTC · 10.0 km deep
4.6
120 km NNE of Tobelo, Indonesia
14:09 UTC · 227.3 km deep
Earthquake Map — December 1, 2020
All Earthquakes — December 1, 2020
Showing 30 of 170 (filtered from 333)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-12-01 2020-12-01 23:53:57 UTC | 2.2ml | 24 km SSE of Mina, Nevada 38.175°, -118.053° | 8.3 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2020, worldwide seismic activity registered a magnitude 2.2 earthquake 24 km SSE of Mina, Nevada at 23:53 UTC. It arrived roughly 1 hours after a larger magnitude 5.1 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:47:05 UTC | 4.3ml | 24 km S of Mina, Nevada 38.167°, -118.081° | 5.6 km | 14 | IV | green | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 24 km S of Mina, Nevada came in on December 1, 2020 at 23:47 UTC. Coming 1 hours after a magnitude 5.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:46:09 UTC | 2.4ml | 24 km S of Mina, Nevada 38.173°, -118.063° | 2.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 24 km S of Mina, Nevada at 23:46 UTC on December 1, 2020. Coming 1 hours after a magnitude 5.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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. | ||||||||
2020-12-01 2020-12-01 23:43:08 UTC | 4.3ml | 24 km S of Mina, Nevada 38.173°, -118.070° | 4.8 km | - | IV | green | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 24 km S of Mina, Nevada on December 1, 2020 at 23:43 UTC. It arrived roughly 1 hours after a larger magnitude 5.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:41:01 UTC | 2.7ml | 25 km S of Mina, Nevada 38.163°, -118.063° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 seismic event took place 25 km S of Mina, Nevada on December 1, 2020 at 23:41 UTC. Coming 1 hours after a magnitude 5.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:39:55 UTC | 3.2ml | 24 km SSE of Mina, Nevada 38.172°, -118.050° | 8.0 km | 1 | II | - | ✓ Reviewed | USGS → |
On December 1, 2020, worldwide seismic activity registered a magnitude 3.2 earthquake 24 km SSE of Mina, Nevada at 23:39 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.1 earthquake that occurred about 1 hours earlier. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:38:07 UTC | 2.4ml | 25 km S of Mina, Nevada 38.164°, -118.089° | 4.0 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.4 event was detected 25 km S of Mina, Nevada on December 1, 2020, with origin time 23:38 UTC. It arrived roughly 1 hours after a larger magnitude 5.1 mainshock in the same 20 km area, placing it within the typical aftershock window. 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. | ||||||||
2020-12-01 2020-12-01 23:35:42 UTC | 3.1ml | 25 km S of Mina, Nevada 38.164°, -118.084° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 seismic event took place 25 km S of Mina, Nevada on December 1, 2020 at 23:35 UTC. It arrived roughly 1 hours after a larger magnitude 5.1 mainshock in the same 20 km area, placing it within the typical aftershock window. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:35:22 UTC | 4.4mb | 40 km ESE of Nikolski, Alaska 52.755°, -168.345° | 39.4 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2020, worldwide seismic activity registered a magnitude 4.4 earthquake 40 km ESE of Nikolski, Alaska at 23:35 UTC. This event falls inside the aftershock decay of a nearby magnitude 6.4 earthquake that occurred about 7 hours earlier. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:32:56 UTC | 5.1ml | 25 km S of Mina, Nevada 38.164°, -118.084° | 5.0 km | 130 | V | green | ✓ Reviewed | USGS → |
On December 1, 2020, worldwide seismic activity registered a magnitude 5.1 earthquake 25 km S of Mina, Nevada at 23:32 UTC. In the 72 hours after this event, the USGS recorded 10 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:25:38 UTC | 2.2md | 4 km SSE of P?hala, Hawaii 19.170°, -155.463° | 32.2 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.2 earthquake 4 km SSE of P?hala, Hawaii with origin time 23:25 UTC on December 1, 2020. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:25:08 UTC | 2.0ml | 53 km ESE of Nikolski, Alaska 52.721°, -168.148° | 21.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 53 km ESE of Nikolski, Alaska with origin time 23:25 UTC on December 1, 2020. Coming 7 hours after a magnitude 6.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:12:08 UTC | 2.5ml | 24 km S of Mina, Nevada 38.170°, -118.070° | 5.6 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2020, worldwide seismic activity registered a magnitude 2.5 earthquake 24 km S of Mina, Nevada at 23:12 UTC. In the 72 hours after this event, the USGS recorded 6 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:10:47 UTC | 3.8ml | 10 km N of Stagecoach, Nevada 39.472°, -119.371° | 13.1 km | 214 | III | - | ✓ Reviewed | USGS → |
This magnitude 3.8 event was detected 10 km N of Stagecoach, Nevada on December 1, 2020, with origin time 23:10 UTC. The event was offshore. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:05:24 UTC | 2.5ml | 56 km ESE of Nikolski, Alaska 52.659°, -168.157° | 30.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:05 UTC on December 1, 2020, a magnitude 2.5 tremor occurred 56 km ESE of Nikolski, Alaska. It arrived roughly 7 hours after a larger magnitude 6.4 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 23:02:26 UTC | 2.2ml | 52 km ESE of Nikolski, Alaska 52.681°, -168.202° | 41.6 km | - | - | - | ✓ Reviewed | USGS → |
At 23:02 UTC on December 1, 2020, a magnitude 2.2 tremor occurred 52 km ESE of Nikolski, Alaska. This event falls inside the aftershock decay of a nearby magnitude 6.4 earthquake that occurred about 7 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 22:57:58 UTC | 2.7ml | 40 km SSW of Wales, Alaska 65.270°, -168.423° | 16.3 km | - | - | - | ✓ Reviewed | USGS → |
December 1, 2020 brought a magnitude 2.7 earthquake 40 km SSW of Wales, Alaska, logged at 22:57 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 22:50:02 UTC | 2.2md | 6 km SSE of Indios, Puerto Rico 17.937°, -66.795° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 6 km SSE of Indios, Puerto Rico with origin time 22:50 UTC on December 1, 2020. It arrived roughly 6 hours after a larger magnitude 2.8 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 22:29:15 UTC | 2.2ml | 20 km WNW of Stanley, Idaho 44.289°, -115.171° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2020 at 22:29 UTC, a magnitude 2.2 earthquake struck 20 km WNW of Stanley, Idaho. It arrived roughly 18 hours after a larger magnitude 2.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 22:22:02 UTC | 2.0ml | 53 km ESE of Nikolski, Alaska 52.770°, -168.125° | 22.2 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2020, worldwide seismic activity registered a magnitude 2.0 earthquake 53 km ESE of Nikolski, Alaska at 22:22 UTC. It arrived roughly 6 hours after a larger magnitude 6.4 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. | ||||||||
2020-12-01 2020-12-01 22:13:40 UTC | 2.1ml | 59 km ESE of Nikolski, Alaska 52.670°, -168.095° | 21.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 59 km ESE of Nikolski, Alaska on December 1, 2020 at 22:13 UTC. It arrived roughly 6 hours after a larger magnitude 6.4 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. | ||||||||
2020-12-01 2020-12-01 22:02:33 UTC | 2.7ml | 115 km SSE of Sand Point, Alaska 54.382°, -159.795° | 17.8 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2020 at 22:02 UTC, a magnitude 2.7 earthquake struck 115 km SSE of Sand Point, Alaska. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 18 hours earlier. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 21:37:00 UTC | 2.0ml | 70 km ESE of Nikolski, Alaska 52.713°, -167.889° | 18.7 km | - | - | - | ✓ Reviewed | USGS → |
At 21:37 UTC on December 1, 2020, a magnitude 2.0 tremor occurred 70 km ESE of Nikolski, Alaska. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 2 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 21:25:15 UTC | 4.5mb | 41 km ESE of Nikolski, Alaska 52.752°, -168.328° | 39.1 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2020 at 21:25 UTC, a magnitude 4.5 earthquake struck 41 km ESE of Nikolski, Alaska. This event falls inside the aftershock decay of a nearby magnitude 6.4 earthquake that occurred about 5 hours earlier. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 21:20:03 UTC | 4.0mb | 51 km NNE of Isangel, Vanuatu -19.095°, 169.436° | 195.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2020 at 21:20 UTC, a magnitude 4.0 earthquake struck 51 km NNE of Isangel, Vanuatu. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 21:13:56 UTC | 2.0ml | 58 km ESE of Nikolski, Alaska 52.785°, -168.038° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 58 km ESE of Nikolski, Alaska at 21:13 UTC on December 1, 2020. Coming 5 hours after a magnitude 6.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 21:12:42 UTC | 4.3mb | Maug Islands region, Northern Mariana Islands 19.334°, 145.589° | 147.1 km | - | - | - | ✓ Reviewed | USGS → |
December 1, 2020 brought a magnitude 4.3 earthquake in the Maug Islands region, Northern Mariana Islands, logged at 21:12 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 21:12:39 UTC | 2.0ml | 58 km ESE of Nikolski, Alaska 52.756°, -168.047° | 21.4 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 58 km ESE of Nikolski, Alaska on December 1, 2020, with origin time 21:12 UTC. It arrived roughly 5 hours after a larger magnitude 6.4 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. | ||||||||
2020-12-01 2020-12-01 21:07:40 UTC | 4.8mb | 158 km W of Pangai, Tonga -19.790°, -175.866° | 219.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.8 earthquake 158 km W of Pangai, Tonga at 21:07 UTC on December 1, 2020. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-12-01 2020-12-01 21:06:59 UTC | 4.0mb | Izu Islands, Japan region 29.794°, 139.315° | 400.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 earthquake was recorded in the Izu Islands, Japan region on December 1, 2020 at 21:06 UTC. 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 1, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.