Earthquakes on September 11, 2021
235
EARTHQUAKES on September 11, 2021
24-hour UTC period · USGS data
LARGEST: M5.5 — South Sandwich Islands region
41 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
46
M3.0–3.9
8
M2.0–2.9
61
M1.0–1.9
116
Activity Summary
235
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
5.5
South Sandwich Islands region
09:23 UTC · 41.1 km deep
5.2
South Sandwich Islands region
09:10 UTC · 79.7 km deep
5.2
267 km N of Bamboo Flat, India
03:20 UTC · 10.0 km deep
5.0
139 km SE of Kimbe, Papua New Guinea
04:56 UTC · 10.0 km deep
4.9
West Chile Rise
09:22 UTC · 10.0 km deep
4.8
142 km SSW of Merizo Village, Guam
14:19 UTC · 10.0 km deep
4.8
182 km NNW of Likisá, Timor Leste
09:40 UTC · 538.7 km deep
4.7
South Sandwich Islands region
13:17 UTC · 10.0 km deep
Earthquake Map — September 11, 2021
All Earthquakes — September 11, 2021
Showing 30 of 119 (filtered from 235)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-09-11 2021-09-11 23:54:08 UTC | 2.1ml | 8 km ENE of P?hala, Hawaii 19.218°, -155.402° | 32.0 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.1 earthquake 8 km ENE of P?hala, Hawaii at 23:54 UTC on September 11, 2021. It arrived roughly 21 hours after a larger magnitude 2.8 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. | ||||||||
2021-09-11 2021-09-11 23:50:07 UTC | 2.0md | 3 km SSE of P?hala, Hawaii 19.171°, -155.467° | 33.4 km | - | - | - | Auto | USGS → |
A magnitude 2.0 earthquake was recorded 3 km SSE of P?hala, Hawaii on September 11, 2021 at 23:50 UTC. It arrived roughly 20 hours after a larger magnitude 2.8 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. | ||||||||
2021-09-11 2021-09-11 23:22:42 UTC | 2.5md | 5km NW of The Geysers, CA 38.815°, -122.793° | 1.7 km | - | - | - | ✓ Reviewed | USGS → |
On September 11, 2021 at 23:22 UTC, a magnitude 2.5 earthquake struck 5km NW of The Geysers, CA. 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. | ||||||||
2021-09-11 2021-09-11 23:00:00 UTC | 4.5mb | South Sandwich Islands region -60.125°, -27.991° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake in the South Sandwich Islands region came in on September 11, 2021 at 23:00 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 22:45:19 UTC | 4.4mb | 52 km ESE of Ger?sh, Iran 27.412°, 54.578° | 10.0 km | 3 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 52 km ESE of Ger?sh, Iran on September 11, 2021 at 22:45 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 22:37:02 UTC | 3.1ml | 8 km NW of Stanley, Idaho 44.262°, -115.025° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.1 earthquake 8 km NW of Stanley, Idaho at 22:37 UTC on September 11, 2021. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 22:34:33 UTC | 2.0ml | 1 km S of P?hala, Hawaii 19.187°, -155.479° | 34.6 km | - | - | - | Auto | USGS → |
This magnitude 2.0 event was detected 1 km S of P?hala, Hawaii on September 11, 2021, with origin time 22:34 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 19 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 22:30:37 UTC | 2.2md | 1 km SSW of P?hala, Hawaii 19.187°, -155.486° | 34.6 km | - | - | - | Auto | USGS → |
This magnitude 2.2 event was detected 1 km SSW of P?hala, Hawaii on September 11, 2021, with origin time 22:30 UTC. It arrived roughly 19 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. | ||||||||
2021-09-11 2021-09-11 22:30:08 UTC | 2.0ml | 58 km SSW of Goldfield, Nevada 37.197°, -117.372° | 8.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 58 km SSW of Goldfield, Nevada with origin time 22:30 UTC on September 11, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.3 earthquake that occurred about 1 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 22:24:19 UTC | 4.4mb | South Sandwich Islands region -57.701°, -25.144° | 54.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake in the South Sandwich Islands region with origin time 22:24 UTC on September 11, 2021. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 22:24:08 UTC | 2.2ml | 39 km SSW of Cantwell, Alaska 63.081°, -149.331° | 81.6 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.2 earthquake 39 km SSW of Cantwell, Alaska with origin time 22:24 UTC on September 11, 2021. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 22:24:06 UTC | 2.3ml | 58 km SSW of Goldfield, Nevada 37.197°, -117.409° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 58 km SSW of Goldfield, Nevada came in on September 11, 2021 at 22:24 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 21:24:25 UTC | 4.5mb | 144 km WSW of Santiago de Cao, Peru -8.515°, -80.428° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place 144 km WSW of Santiago de Cao, Peru on September 11, 2021 at 21:24 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 21:20:00 UTC | 4.1mb | 49 km SE of Ger?sh, Iran 27.389°, 54.524° | 10.0 km | 4 | - | - | ✓ Reviewed | USGS → |
On September 11, 2021, worldwide seismic activity registered a magnitude 4.1 earthquake 49 km SE of Ger?sh, Iran at 21:20 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.3 earthquake that occurred about 1 hours earlier. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 21:18:23 UTC | 4.6mb | South Sandwich Islands region -58.173°, -25.744° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 11, 2021 at 21:18 UTC, a magnitude 4.6 earthquake struck in the South Sandwich Islands region. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 20:55:22 UTC | 4.3mb | 58 km ESE of Ger?sh, Iran 27.393°, 54.645° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
September 11, 2021 brought a magnitude 4.3 earthquake 58 km ESE of Ger?sh, Iran, logged at 20:55 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 20:49:36 UTC | 4.2mb | 3 km NE of Orikum, Albania 40.347°, 19.500° | 10.0 km | 2 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 3 km NE of Orikum, Albania on September 11, 2021, with origin time 20:49 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 20:34:23 UTC | 2.0ml | 63 km ESE of Halibut Cove, Alaska 59.434°, -150.141° | 20.2 km | - | - | - | Auto | USGS → |
On September 11, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 63 km ESE of Halibut Cove, Alaska at 20:34 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 20:24:57 UTC | 2.4ml | 10 km ENE of P?hala, Hawaii 19.236°, -155.388° | 31.7 km | - | - | - | Auto | USGS → |
A magnitude 2.4 earthquake was recorded 10 km ENE of P?hala, Hawaii on September 11, 2021 at 20:24 UTC. Coming 17 hours after a magnitude 2.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 20:24:26 UTC | 2.4ml | 9 km ENE of P?hala, Hawaii 19.226°, -155.391° | 31.2 km | - | - | - | Auto | USGS → |
On September 11, 2021 at 20:24 UTC, a magnitude 2.4 earthquake struck 9 km ENE of P?hala, Hawaii. Coming 17 hours after a magnitude 2.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 20:14:36 UTC | 4.6mb | 102 km SSE of Pondaguitan, Philippines 5.526°, 126.582° | 41.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded 102 km SSE of Pondaguitan, Philippines on September 11, 2021 at 20:14 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 19:45:47 UTC | 4.5mb | 127 km ESE of Tondano, Indonesia 0.934°, 125.998° | 43.0 km | - | - | - | ✓ Reviewed | USGS → |
September 11, 2021 brought a magnitude 4.5 earthquake 127 km ESE of Tondano, Indonesia, logged at 19:45 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 19:27:40 UTC | 2.7ml | 54 km S of Whites City, New Mexico 31.680°, -104.391° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 earthquake was recorded 54 km S of Whites City, New Mexico on September 11, 2021 at 19:27 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 19:15:18 UTC | 2.0ml | 55 km S of Whites City, New Mexico 31.676°, -104.390° | 6.8 km | - | - | - | ✓ Reviewed | USGS → |
At 19:15 UTC on September 11, 2021, a magnitude 2.0 tremor occurred 55 km S of Whites City, New Mexico. It arrived roughly 7 hours after a larger magnitude 2.6 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 18:55:15 UTC | 2.2md | 39km NNE of Toms Place, CA 37.898°, -118.545° | 11.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 39km NNE of Toms Place, CA came in on September 11, 2021 at 18:55 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 14 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 18:52:28 UTC | 3.0ml | 30 km SE of Wright, Wyoming 43.545°, -105.248° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 30 km SE of Wright, Wyoming came in on September 11, 2021 at 18:52 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 18:37:53 UTC | 2.8ml | 58 km N of Petersville, Alaska 63.019°, -150.627° | 106.9 km | - | - | - | Auto | USGS → |
September 11, 2021 brought a magnitude 2.8 earthquake 58 km N of Petersville, Alaska, logged at 18:37 UTC. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 18:35:13 UTC | 2.2md | 6 km SE of Maria Antonia, Puerto Rico 17.931°, -66.847° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 6 km SE of Maria Antonia, Puerto Rico on September 11, 2021 at 18:35 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 8 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 18:14:37 UTC | 2.4ml | 10 km W of Lamont, Oklahoma 36.694°, -97.677° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 10 km W of Lamont, Oklahoma on September 11, 2021 at 18:14 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-11 2021-09-11 17:39:38 UTC | 2.5ml | 59 km NNE of Kobuk, Alaska 67.360°, -156.150° | 0.0 km | - | - | - | Auto | USGS → |
September 11, 2021 brought a magnitude 2.5 earthquake 59 km NNE of Kobuk, Alaska, logged at 17:39 UTC. It arrived roughly 8 hours after a larger magnitude 3.4 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 M2.5 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 September 11, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.