Earthquakes on December 1, 2021
260
EARTHQUAKES on December 1, 2021
24-hour UTC period · USGS data
44 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
51
M3.0–3.9
10
M2.0–2.9
57
M1.0–1.9
139
Activity Summary
260
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.3
68 km W of Kirakira, Solomon Islands
17:23 UTC · 43.7 km deep
5.1
22 km WSW of Cañete, Chile
04:39 UTC · 15.7 km deep
Felt by 19
5.0
1 km SSW of Tsukuba, Japan
16:58 UTC · 51.7 km deep
Felt by 210
4.9
South Sandwich Islands region
20:20 UTC · 10.0 km deep
4.9
Izu Islands, Japan region
08:40 UTC · 10.0 km deep
4.9
79 km SE of Hasaki, Japan
06:04 UTC · 10.0 km deep
Felt by 1
4.8
southeast of the Loyalty Islands
21:21 UTC · 10.0 km deep
4.8
79 km SE of Hasaki, Japan
10:22 UTC · 10.0 km deep
Earthquake Map — December 1, 2021
All Earthquakes — December 1, 2021
Showing 30 of 121 (filtered from 260)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-12-01 2021-12-01 23:57:37 UTC | 2.0md | 7 km E of P?hala, Hawaii 19.195°, -155.404° | 32.0 km | - | - | - | Auto | USGS → |
December 1, 2021 brought a magnitude 2.0 earthquake 7 km E of P?hala, Hawaii, logged at 23:57 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 8 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 23:55:08 UTC | 3.8ml | 141 km SE of Perryville, Alaska 55.004°, -157.584° | 12.3 km | - | I | green | ✓ Reviewed | USGS → |
At 23:55 UTC on December 1, 2021, a magnitude 3.8 tremor occurred 141 km SE of Perryville, Alaska. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. The event was offshore. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 23:14:10 UTC | 2.0ml | 34 km S of Chenega, Alaska 59.757°, -148.037° | 12.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 34 km S of Chenega, Alaska with origin time 23:14 UTC on December 1, 2021. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 23:11:00 UTC | 2.2md | 7 km E of P?hala, Hawaii 19.216°, -155.405° | 32.6 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.2 earthquake 7 km E of P?hala, Hawaii came in on December 1, 2021 at 23:11 UTC. It arrived roughly 7 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 22:53:21 UTC | 4.5mb | Kermadec Islands, New Zealand -30.815°, -177.682° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place near Kermadec Islands, New Zealand on December 1, 2021 at 22:53 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 22:47:33 UTC | 4.2mb | Izu Islands, Japan region 31.131°, 142.376° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake in the Izu Islands, Japan region with origin time 22:47 UTC on December 1, 2021. It arrived roughly 14 hours after a larger magnitude 4.9 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. | ||||||||
2021-12-01 2021-12-01 22:44:13 UTC | 4.4mb | 8 km N of Canneto, Italy 38.572°, 14.973° | 225.4 km | - | - | - | ✓ Reviewed | USGS → |
At 22:44 UTC on December 1, 2021, a magnitude 4.4 tremor occurred 8 km N of Canneto, Italy. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 22:30:46 UTC | 4.7mb | 98 km S of La Libertad, El Salvador 12.601°, -89.399° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
December 1, 2021 brought a magnitude 4.7 earthquake 98 km S of La Libertad, El Salvador, logged at 22:30 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 22:24:16 UTC | 2.4ml | Idaho-Montana border region 44.986°, -113.016° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place in the Idaho-Montana border region on December 1, 2021 at 22:24 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 22:23:31 UTC | 2.6ml | 54 km WNW of Ninilchik, Alaska 60.298°, -152.518° | 92.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 54 km WNW of Ninilchik, Alaska with origin time 22:23 UTC on December 1, 2021. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 22:08:02 UTC | 2.9md | 3 km S of Magas Arriba, Puerto Rico 17.990°, -66.765° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:08 UTC on December 1, 2021, a magnitude 2.9 tremor occurred 3 km S of Magas Arriba, Puerto Rico. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 21:26:44 UTC | 4.3mb | southern Mid-Atlantic Ridge -48.490°, -9.511° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2021 at 21:26 UTC, a magnitude 4.3 earthquake struck near southern Mid-Atlantic Ridge. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 21:21:00 UTC | 4.8mb | southeast of the Loyalty Islands -23.052°, 171.444° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected southeast of the Loyalty Islands on December 1, 2021, with origin time 21:21 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 21:19:46 UTC | 2.1ml | 3 km SSW of P?hala, Hawaii 19.176°, -155.495° | 35.0 km | - | - | - | Auto | USGS → |
At 21:19 UTC on December 1, 2021, a magnitude 2.1 tremor occurred 3 km SSW of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 5 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 20:56:32 UTC | 3.2ml | 29 km NNE of Sand Point, Alaska 55.568°, -160.282° | 85.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.2 earthquake 29 km NNE of Sand Point, Alaska came in on December 1, 2021 at 20:56 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 20:29:03 UTC | 2.4ml | 10 km WNW of Panguitch, Utah 37.857°, -112.544° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
December 1, 2021 brought a magnitude 2.4 earthquake 10 km WNW of Panguitch, Utah, logged at 20:29 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 20:20:31 UTC | 4.9mb | South Sandwich Islands region -60.136°, -24.869° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2021, worldwide seismic activity registered a magnitude 4.9 earthquake in the South Sandwich Islands region at 20:20 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 19:52:25 UTC | 4.6mb | 150 km SSW of Merizo Village, Guam 12.000°, 144.157° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 19:52 UTC on December 1, 2021, a magnitude 4.6 tremor occurred 150 km SSW of Merizo Village, Guam. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 19:21:46 UTC | 2.1ml | 107 km SSW of False Pass, Alaska 53.952°, -164.024° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 107 km SSW of False Pass, Alaska at 19:21 UTC on December 1, 2021. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 19:15:11 UTC | 2.4ml | 8 km E of P?hala, Hawaii 19.214°, -155.401° | 33.5 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.4 earthquake 8 km E of P?hala, Hawaii with origin time 19:15 UTC on December 1, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 3 hours earlier. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 19:12:05 UTC | 2.0ml | 20 km WNW of Stanley, Idaho 44.301°, -115.171° | 8.3 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2021 at 19:12 UTC, a magnitude 2.0 earthquake struck 20 km WNW of Stanley, Idaho. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 19:08:43 UTC | 2.2ml | 42 km NNE of Petersville, Alaska 62.861°, -150.548° | 88.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 42 km NNE of Petersville, Alaska on December 1, 2021 at 19:08 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 18:51:18 UTC | 2.0ml | 25 km N of Snyder, Texas 32.947°, -100.925° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 25 km N of Snyder, Texas at 18:51 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 18:48:49 UTC | 3.5ml | 15 km NW of Atka, Alaska 52.306°, -174.333° | 178.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.5 earthquake 15 km NW of Atka, Alaska at 18:48 UTC on December 1, 2021. The event was offshore. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 18:44:57 UTC | 2.1ml | 13 km ESE of Port Graham, Alaska 59.308°, -151.612° | 47.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 13 km ESE of Port Graham, Alaska on December 1, 2021, with origin time 18:44 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 18:39:22 UTC | 2.3md | 10 km S of Kukuihaele, Hawaii 20.028°, -155.565° | 40.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 10 km S of Kukuihaele, Hawaii on December 1, 2021, with origin time 18:39 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 18:25:41 UTC | 4.7mwr | 141 km NE of Iquique, Chile -19.272°, -69.240° | 119.0 km | 3 | - | - | ✓ Reviewed | USGS → |
On December 1, 2021 at 18:25 UTC, a magnitude 4.7 earthquake struck 141 km NE of Iquique, Chile. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 17:55:31 UTC | 2.9ml | 94 km SW of Adak, Alaska 51.211°, -177.485° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 94 km SW of Adak, Alaska at 17:55 UTC on December 1, 2021. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 17:44:24 UTC | 4.3mb | 74 km SE of Hasaki, Japan 35.217°, 141.352° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 74 km SE of Hasaki, Japan on December 1, 2021 at 17:44 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.9 earthquake that occurred about 12 hours earlier. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-12-01 2021-12-01 17:40:49 UTC | 4.2mb | 98 km ESE of Yamada, Japan 39.260°, 143.066° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On December 1, 2021, worldwide seismic activity registered a magnitude 4.2 earthquake 98 km ESE of Yamada, Japan at 17:40 UTC. See the M4.2 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, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.