Earthquakes on September 10, 2021
316
EARTHQUAKES on September 10, 2021
24-hour UTC period · USGS data
LARGEST: M5.5 — South Sandwich Islands region
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
39
M3.0–3.9
22
M2.0–2.9
74
M1.0–1.9
177
Activity Summary
316
Total earthquakes
~250
Daily average
Elevated
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.5
South Sandwich Islands region
17:07 UTC · 10.0 km deep
5.3
87 km ENE of Port-Olry, Vanuatu
17:45 UTC · 6.9 km deep
Felt by 2
5.0
118 km ESE of Kokopo, Papua New Guinea
20:09 UTC · 59.4 km deep
5.0
South Sandwich Islands region
19:28 UTC · 35.2 km deep
4.9
Kuril Islands
20:10 UTC · 10.0 km deep
4.9
West Chile Rise
04:21 UTC · 10.0 km deep
4.8
Kuril Islands
20:00 UTC · 5.7 km deep
4.8
South Sandwich Islands region
17:50 UTC · 35.6 km deep
Earthquake Map — September 10, 2021

All Earthquakes — September 10, 2021
Showing 30 of 139 (filtered from 316)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-09-10 2021-09-10 23:57:32 UTC | 2.2ml | 75 km ESE of Chignik, Alaska 55.987°, -157.329° | 18.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 75 km ESE of Chignik, Alaska came in on September 10, 2021 at 23:57 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 23:06:26 UTC | 3.3ml | 25 km NW of Stanley, Idaho 44.353°, -115.189° | 10.0 km | 2 | - | - | ✓ Reviewed | USGS → |
On September 10, 2021 at 23:06 UTC, a magnitude 3.3 earthquake struck 25 km NW of Stanley, Idaho. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 23:03:15 UTC | 3.4ml | 34 km SE of Mina, Nevada 38.168°, -117.839° | 7.9 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.4 seismic event took place 34 km SE of Mina, Nevada on September 10, 2021 at 23:03 UTC. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 22:56:28 UTC | 3.9mb | 284 km ESE of Attu Station, Alaska 51.906°, 177.077° | 10.0 km | - | II | - | ✓ Reviewed | USGS → |
On September 10, 2021, worldwide seismic activity registered a magnitude 3.9 earthquake 284 km ESE of Attu Station, Alaska at 22:56 UTC. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 22:30:41 UTC | 3.2ml | 12 km WNW of Stanley, Idaho 44.272°, -115.074° | 10.0 km | 4 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.2 earthquake 12 km WNW of Stanley, Idaho at 22:30 UTC on September 10, 2021. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 22:25:35 UTC | 2.0ml | Alaska Peninsula 57.805°, -156.360° | 129.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake near Alaska Peninsula with origin time 22:25 UTC on September 10, 2021. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 22:19:30 UTC | 2.2ml | 165 km S of False Pass, Alaska 53.370°, -163.487° | 17.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 165 km S of False Pass, Alaska on September 10, 2021 at 22:19 UTC. It arrived roughly 13 hours after a larger magnitude 4.1 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. | ||||||||
2021-09-10 2021-09-10 22:15:14 UTC | 2.2ml | Unimak Island region, Alaska 53.315°, -163.455° | 14.5 km | - | - | - | ✓ Reviewed | USGS → |
September 10, 2021 brought a magnitude 2.2 earthquake in the Unimak Island region, Alaska, logged at 22:15 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.1 earthquake that occurred about 13 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 22:13:02 UTC | 2.6ml | 15 km WSW of Cooper Landing, Alaska 60.421°, -150.080° | 40.1 km | 2 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 15 km WSW of Cooper Landing, Alaska at 22:13 UTC on September 10, 2021. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 21:07:08 UTC | 4.7mb | 77 km W of San Antonio de los Cobres, Argentina -24.098°, -67.070° | 190.8 km | - | - | - | ✓ Reviewed | USGS → |
September 10, 2021 brought a magnitude 4.7 earthquake 77 km W of San Antonio de los Cobres, Argentina, logged at 21:07 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 20:45:14 UTC | 2.0ml | 44 km WSW of Tatitlek, Alaska 60.697°, -147.416° | 3.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 10, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 44 km WSW of Tatitlek, Alaska at 20:45 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. | ||||||||
2021-09-10 2021-09-10 20:36:50 UTC | 4.2mb | 152 km WSW of Gorontalo, Indonesia 0.170°, 121.745° | 180.4 km | - | - | - | ✓ Reviewed | USGS → |
On September 10, 2021 at 20:36 UTC, a magnitude 4.2 earthquake struck 152 km WSW of Gorontalo, Indonesia. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 20:31:41 UTC | 2.5ml | 26 km NW of Stanley, Idaho 44.364°, -115.204° | 13.9 km | - | - | - | ✓ Reviewed | USGS → |
On September 10, 2021, worldwide seismic activity registered a magnitude 2.5 earthquake 26 km NW of Stanley, Idaho at 20:31 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 20:10:39 UTC | 4.9mb | Kuril Islands 45.535°, 151.974° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:10 UTC on September 10, 2021, a magnitude 4.9 tremor occurred near Kuril Islands. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 20:09:34 UTC | 5.0mb | 118 km ESE of Kokopo, Papua New Guinea -4.696°, 153.279° | 59.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake 118 km ESE of Kokopo, Papua New Guinea with origin time 20:09 UTC on September 10, 2021. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 20:00:50 UTC | 4.8mb | Kuril Islands 45.510°, 151.841° | 5.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected near Kuril Islands on September 10, 2021, with origin time 20:00 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 19:56:04 UTC | 2.6ml | 244 km SSE of King Cove, Alaska 53.086°, -160.681° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 244 km SSE of King Cove, Alaska on September 10, 2021, with origin time 19:56 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 19:43:38 UTC | 2.0ml | 15 km SSE of Sunnyside, Utah 39.425°, -110.305° | -1.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 15 km SSE of Sunnyside, Utah on September 10, 2021 at 19:43 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. | ||||||||
2021-09-10 2021-09-10 19:28:34 UTC | 5.0mb | South Sandwich Islands region -57.984°, -25.342° | 35.2 km | - | - | - | ✓ Reviewed | USGS → |
On September 10, 2021, worldwide seismic activity registered a magnitude 5.0 earthquake in the South Sandwich Islands region at 19:28 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 19:24:36 UTC | 4.4mb | 167 km S of Lembar, Indonesia -10.240°, 116.122° | 44.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 167 km S of Lembar, Indonesia came in on September 10, 2021 at 19:24 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 19:04:03 UTC | 2.1ml | 60 km NNW of Petersville, Alaska 63.026°, -151.001° | 120.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 10, 2021 at 19:04 UTC, a magnitude 2.1 earthquake struck 60 km NNW of Petersville, Alaska. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 18:51:47 UTC | 2.1ml | 30 km E of Pedro Bay, Alaska 59.740°, -153.579° | 123.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 30 km E of Pedro Bay, Alaska on September 10, 2021 at 18:51 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 18:35:28 UTC | 3.1ml | 31 km S of Atka, Alaska 51.920°, -174.280° | 4.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 seismic event took place 31 km S of Atka, Alaska on September 10, 2021 at 18:35 UTC. 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. | ||||||||
2021-09-10 2021-09-10 18:33:04 UTC | 2.5ml | 171 km S of False Pass, Alaska 53.311°, -163.440° | 15.5 km | - | - | - | ✓ Reviewed | USGS → |
At 18:33 UTC on September 10, 2021, a magnitude 2.5 tremor occurred 171 km S of False Pass, Alaska. It arrived roughly 9 hours after a larger magnitude 4.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 18:32:28 UTC | 4.0mb | Fiji region -16.128°, -176.521° | 380.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 earthquake was recorded in the Fiji region on September 10, 2021 at 18:32 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. | ||||||||
2021-09-10 2021-09-10 18:04:08 UTC | 2.1ml | 50 km NNW of Yakutat, Alaska 59.963°, -140.095° | 2.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 50 km NNW of Yakutat, Alaska with origin time 18:04 UTC on September 10, 2021. Coming 10 hours after a magnitude 2.9 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 17:57:58 UTC | 2.5ml | 46 km NW of Toyah, Texas 31.570°, -104.179° | 7.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 46 km NW of Toyah, Texas at 17:57 UTC on September 10, 2021. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 17:50:04 UTC | 4.8mb | South Sandwich Islands region -58.059°, -25.319° | 35.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.8 earthquake in the South Sandwich Islands region came in on September 10, 2021 at 17:50 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 17:49:41 UTC | 3.4ml | 126 km W of Nikolski, Alaska 53.035°, -170.732° | 217.4 km | - | - | - | ✓ Reviewed | USGS → |
September 10, 2021 brought a magnitude 3.4 earthquake 126 km W of Nikolski, Alaska, logged at 17:49 UTC. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-10 2021-09-10 17:45:16 UTC | 5.3mww | 87 km ENE of Port-Olry, Vanuatu -14.699°, 167.809° | 6.9 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 5.3 earthquake was recorded 87 km ENE of Port-Olry, Vanuatu on September 10, 2021 at 17:45 UTC. See the M5.3 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 September 10, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.