Earthquakes on August 10, 2021
321
EARTHQUAKES on August 10, 2021
24-hour UTC period · USGS data
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
35
M3.0–3.9
20
M2.0–2.9
65
M1.0–1.9
197
Activity Summary
321
Total earthquakes
~250
Daily average
Elevated
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.2
southeast of the Loyalty Islands
21:21 UTC · 10.0 km deep
5.2
Gulf of Aden
15:25 UTC · 10.0 km deep
Felt by 1
5.0
northern Mid-Atlantic Ridge
18:58 UTC · 10.0 km deep
5.0
123 km SSE of Kuril’sk, Russia
12:08 UTC · 35.0 km deep
4.9
Kuril Islands
16:27 UTC · 51.8 km deep
4.8
Southern Qinghai, China
22:35 UTC · 10.0 km deep
4.8
25 km ESE of Shwebo, Myanmar
03:18 UTC · 10.0 km deep
4.7
76 km SW of Santiago, Peru
15:20 UTC · 10.0 km deep
Felt by 1
Earthquake Map — August 10, 2021
All Earthquakes — August 10, 2021
Showing 30 of 124 (filtered from 321)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-08-10 2021-08-10 23:40:31 UTC | 3.1ml | 60 km SSW of Atka, Alaska 51.709°, -174.595° | 224.2 km | - | - | - | ✓ Reviewed | USGS → |
August 10, 2021 brought a magnitude 3.1 earthquake 60 km SSW of Atka, Alaska, logged at 23:40 UTC. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 23:28:26 UTC | 4.3mb | 134 km ENE of Hachinohe, Japan 40.939°, 142.989° | 43.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 10, 2021, worldwide seismic activity registered a magnitude 4.3 earthquake 134 km ENE of Hachinohe, Japan at 23:28 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 23:22:26 UTC | 4.4mb | 266 km NNW of Exmouth, Australia -19.739°, 113.062° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 266 km NNW of Exmouth, Australia came in on August 10, 2021 at 23:22 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 23:03:23 UTC | 2.1ml | 6 km ENE of P?hala, Hawaii 19.235°, -155.425° | 32.7 km | - | - | - | Auto | USGS → |
On August 10, 2021 at 23:03 UTC, a magnitude 2.1 earthquake struck 6 km ENE of P?hala, Hawaii. Coming 1 hours after a magnitude 2.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 22:52:47 UTC | 3.9mb | 42 km WNW of Nikolski, Alaska 53.026°, -169.473° | 135.8 km | - | - | - | ✓ Reviewed | USGS → |
August 10, 2021 brought a magnitude 3.9 earthquake 42 km WNW of Nikolski, Alaska, logged at 22:52 UTC. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 22:35:58 UTC | 4.8mb | Southern Qinghai, China 34.711°, 98.081° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.8 earthquake near Southern Qinghai, China at 22:35 UTC on August 10, 2021. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 22:32:39 UTC | 2.9ml | 56 km SW of Nikolski, Alaska 52.632°, -169.523° | 33.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 10, 2021 at 22:32 UTC, a magnitude 2.9 earthquake struck 56 km SW of Nikolski, Alaska. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 22:25:06 UTC | 2.1ml | 89 km SSE of Sand Point, Alaska 54.625°, -159.850° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
August 10, 2021 brought a magnitude 2.1 earthquake 89 km SSE of Sand Point, Alaska, logged at 22:25 UTC. It arrived roughly 19 hours after a larger magnitude 2.4 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. | ||||||||
2021-08-10 2021-08-10 22:08:38 UTC | 2.2ml | south of Alaska 54.990°, -157.993° | 18.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake south of Alaska with origin time 22:08 UTC on August 10, 2021. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 21:50:02 UTC | 2.2ml | 6 km ENE of P?hala, Hawaii 19.236°, -155.426° | 32.5 km | - | - | - | Auto | USGS → |
A magnitude 2.2 seismic event took place 6 km ENE of P?hala, Hawaii on August 10, 2021 at 21:50 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 21:36:48 UTC | 3.3md | 55 km W of Stella, Puerto Rico 18.252°, -67.763° | 2.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.3 earthquake 55 km W of Stella, Puerto Rico came in on August 10, 2021 at 21:36 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 21:21:53 UTC | 5.2mww | southeast of the Loyalty Islands -23.353°, 171.542° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 10, 2021 at 21:21 UTC, a magnitude 5.2 earthquake struck southeast of the Loyalty Islands. It is the largest earthquake currently listed for worldwide seismic activity on August 10, 2021. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 21:15:52 UTC | 3.6mb | 193 km S of Sand Point, Alaska 53.619°, -160.035° | 10.0 km | - | I | - | ✓ Reviewed | USGS → |
A magnitude 3.6 earthquake was recorded 193 km S of Sand Point, Alaska on August 10, 2021 at 21:15 UTC. The event was offshore. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 21:12:12 UTC | 3.1ml | 19 km W of Gillette, Wyoming 44.310°, -105.746° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 10, 2021 at 21:12 UTC, a magnitude 3.1 earthquake struck 19 km W of Gillette, Wyoming. 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. | ||||||||
2021-08-10 2021-08-10 20:29:02 UTC | 4.1mb | south of the Fiji Islands -23.597°, -177.252° | 180.6 km | - | - | - | ✓ Reviewed | USGS → |
At 20:29 UTC on August 10, 2021, a magnitude 4.1 tremor occurred south of the Fiji Islands. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 20:18:26 UTC | 4.4mb | southeast of the Loyalty Islands -22.607°, 170.608° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place southeast of the Loyalty Islands on August 10, 2021 at 20:18 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 19:46:46 UTC | 2.8ml | 30 km NE of Paxson, Alaska 63.305°, -145.246° | 1.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 30 km NE of Paxson, Alaska on August 10, 2021, with origin time 19:46 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. | ||||||||
2021-08-10 2021-08-10 19:29:31 UTC | 2.7md | 34km ENE of Dardanelle, CA 38.493°, -119.498° | 5.0 km | 4 | - | - | ✓ Reviewed | USGS → |
On August 10, 2021 at 19:29 UTC, a magnitude 2.7 earthquake struck 34km ENE of Dardanelle, CA. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 19:28:32 UTC | 2.1ml | 18 km WNW of Stanley, Idaho 44.304°, -115.138° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 10, 2021 brought a magnitude 2.1 earthquake 18 km WNW of Stanley, Idaho, logged at 19:28 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 6 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 19:24:47 UTC | 3.2ml | 119 km SSE of Chignik, Alaska 55.370°, -157.429° | 18.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 seismic event took place 119 km SSE of Chignik, Alaska on August 10, 2021 at 19:24 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 19:00:25 UTC | 2.6md | 1 km ESE of Yauco, Puerto Rico 18.032°, -66.837° | 11.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 1 km ESE of Yauco, Puerto Rico with origin time 19:00 UTC on August 10, 2021. It arrived roughly 13 hours after a larger magnitude 3.1 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. | ||||||||
2021-08-10 2021-08-10 18:58:21 UTC | 5.0mww | northern Mid-Atlantic Ridge 28.203°, -43.707° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake near northern Mid-Atlantic Ridge with origin time 18:58 UTC on August 10, 2021. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 18:52:58 UTC | 2.2ml | 15 km S of Fern Forest, Hawaii 19.327°, -155.132° | 2.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 15 km S of Fern Forest, Hawaii on August 10, 2021 at 18:52 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 8 hours earlier. 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. | ||||||||
2021-08-10 2021-08-10 18:34:21 UTC | 3.1ml | 19 km WNW of Huachinera, Mexico 30.281°, -109.145° | 15.7 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 19 km WNW of Huachinera, Mexico on August 10, 2021 at 18:34 UTC. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 18:21:37 UTC | 4.4mb | south of the Fiji Islands -25.082°, 179.760° | 508.9 km | - | - | - | ✓ Reviewed | USGS → |
August 10, 2021 brought a magnitude 4.4 earthquake south of the Fiji Islands, logged at 18:21 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. | ||||||||
2021-08-10 2021-08-10 17:53:44 UTC | 4.5mb | 126 km SSE of Lata, Solomon Islands -11.735°, 166.337° | 52.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 126 km SSE of Lata, Solomon Islands on August 10, 2021 at 17:53 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 17:51:13 UTC | 2.2ml | 14km NE of Coso Junction, CA 36.138°, -117.838° | 2.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 10, 2021 at 17:51 UTC, a magnitude 2.2 earthquake struck 14km NE of Coso Junction, CA. It arrived roughly 1 hours after a larger magnitude 2.9 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 17:48:09 UTC | 2.9ml | 14km NE of Coso Junction, CA 36.136°, -117.836° | 2.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 14km NE of Coso Junction, CA on August 10, 2021 at 17:48 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 M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 17:35:22 UTC | 4.2mb | 167 km S of Pundong, Indonesia -9.462°, 110.279° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 10, 2021 brought a magnitude 4.2 earthquake 167 km S of Pundong, Indonesia, logged at 17:35 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-10 2021-08-10 17:28:43 UTC | 2.0ml | 46 km N of Chase, Alaska 62.867°, -150.032° | 72.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 46 km N of Chase, Alaska on August 10, 2021 at 17:28 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.3 earthquake that occurred about 1 hours earlier. The event was offshore. See the M2.0 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 August 10, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.