Earthquakes on October 11, 2021
315
EARTHQUAKES on October 11, 2021
24-hour UTC period · USGS data
LARGEST: M6.9 — 112 km E of Chignik, Alaska
52 km deep · 320 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
33
M3.0–3.9
20
M2.0–2.9
121
M1.0–1.9
135
Activity Summary
315
Total earthquakes
~250
Daily average
Elevated
Activity level
6
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.9
112 km E of Chignik, Alaska
09:10 UTC · 51.6 km deep
Felt by 320
5.8
Kuril Islands
23:10 UTC · 70.0 km deep
5.7
131 km W of Ternate, Indonesia
12:34 UTC · 36.9 km deep
Felt by 8
5.0
85 km ESE of Pondaguitan, Philippines
23:30 UTC · 69.8 km deep
Felt by 1
5.0
140 km ESE of Tondano, Indonesia
17:30 UTC · 13.0 km deep
5.0
140 km W of Ternate, Indonesia
15:27 UTC · 10.0 km deep
Felt by 1
4.9
81 km S of Atka, Alaska
18:25 UTC · 35.0 km deep
4.8
49 km SSE of Maumere, Indonesia
03:09 UTC · 97.9 km deep
Earthquake Map — October 11, 2021
All Earthquakes — October 11, 2021
Showing 30 of 180 (filtered from 315)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-10-11 2021-10-11 23:41:11 UTC | 2.1ml | 2 km S of P?hala, Hawaii 19.179°, -155.483° | 32.9 km | - | - | - | Auto | USGS → |
On October 11, 2021, worldwide seismic activity registered a magnitude 2.1 earthquake 2 km S of P?hala, Hawaii at 23:41 UTC. It arrived roughly 16 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 23:30:21 UTC | 5.0mb | 85 km ESE of Pondaguitan, Philippines 6.114°, 126.914° | 69.8 km | 1 | - | - | ✓ Reviewed | USGS → |
On October 11, 2021, worldwide seismic activity registered a magnitude 5.0 earthquake 85 km ESE of Pondaguitan, Philippines at 23:30 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 23:30:05 UTC | 3.8md | 35 km SSE of Boca de Yuma, Dominican Republic 18.109°, -68.426° | 87.0 km | - | - | - | ✓ Reviewed | USGS → |
October 11, 2021 brought a magnitude 3.8 earthquake 35 km SSE of Boca de Yuma, Dominican Republic, logged at 23:30 UTC. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 23:25:33 UTC | 2.1ml | 60 km ENE of Pedro Bay, Alaska 59.979°, -153.099° | 140.7 km | - | - | - | ✓ Reviewed | USGS → |
At 23:25 UTC on October 11, 2021, a magnitude 2.1 tremor occurred 60 km ENE of Pedro Bay, Alaska. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 23:14:47 UTC | 3.1ml | 13km ENE of Ridgecrest, CA 35.658°, -117.536° | 7.7 km | 16 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 13km ENE of Ridgecrest, CA on October 11, 2021 at 23:14 UTC. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 23:10:00 UTC | 5.8mww | Kuril Islands 48.297°, 153.751° | 70.0 km | - | IV | green | ✓ Reviewed | USGS → |
A magnitude 5.8 earthquake was recorded near Kuril Islands on October 11, 2021 at 23:10 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 22:49:02 UTC | 2.7ml | 54 km S of Whites City, New Mexico 31.685°, -104.415° | 7.4 km | - | - | - | ✓ Reviewed | USGS → |
On October 11, 2021 at 22:49 UTC, a magnitude 2.7 earthquake struck 54 km S of Whites City, New Mexico. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 22:17:46 UTC | 4.0mb | 47 km NW of Curup, Indonesia -3.127°, 102.258° | 114.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.0 event was detected 47 km NW of Curup, Indonesia on October 11, 2021, with origin time 22:17 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 21:56:34 UTC | 2.2ml | 6 km NNE of Willow, Alaska 61.800°, -149.985° | 46.1 km | - | - | - | ✓ Reviewed | USGS → |
On October 11, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 6 km NNE of Willow, Alaska at 21:56 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 21:31:42 UTC | 2.3ml | 6 km WNW of Prague, Oklahoma 35.511°, -96.745° | 7.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 6 km WNW of Prague, Oklahoma on October 11, 2021 at 21:31 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 21:26:22 UTC | 3.0ml | 91 km SW of Unalaska, Alaska 53.246°, -167.418° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
At 21:26 UTC on October 11, 2021, a magnitude 3.0 tremor occurred 91 km SW of Unalaska, Alaska. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 21:25:47 UTC | 2.4ml | 5 km SW of P?hala, Hawaii 19.166°, -155.508° | 36.4 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 5 km SW of P?hala, Hawaii on October 11, 2021 at 21:25 UTC. It arrived roughly 13 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 21:21:22 UTC | 2.1ml | 56 km S of Whites City, New Mexico 31.668°, -104.382° | 6.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 56 km S of Whites City, New Mexico at 21:21 UTC on October 11, 2021. Coming 9 hours after a magnitude 2.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:53:03 UTC | 2.4ml | 117 km E of Chignik, Alaska 56.372°, -156.517° | 73.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 11, 2021, worldwide seismic activity registered a magnitude 2.4 earthquake 117 km E of Chignik, Alaska at 20:53 UTC. It arrived roughly 12 hours after a larger magnitude 6.9 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:49:18 UTC | 2.3md | 10 km ENE of P?hala, Hawaii 19.240°, -155.387° | 32.2 km | - | - | - | Auto | USGS → |
A magnitude 2.3 earthquake was recorded 10 km ENE of P?hala, Hawaii on October 11, 2021 at 20:49 UTC. Coming 13 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:48:22 UTC | 2.2ml | 17 km SSE of Gonzales, Texas 29.354°, -97.380° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
At 20:48 UTC on October 11, 2021, a magnitude 2.2 tremor occurred 17 km SSE of Gonzales, Texas. Coming 17 hours after a magnitude 2.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:38:55 UTC | 2.7md | 6km NE of Round Valley, CA 37.444°, -118.543° | 10.2 km | - | - | - | ✓ Reviewed | USGS → |
October 11, 2021 brought a magnitude 2.7 earthquake 6km NE of Round Valley, CA, logged at 20:38 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:35:38 UTC | 3.1ml | 106 km W of Dutch Harbor, Alaska 53.986°, -168.159° | 13.7 km | - | - | - | ✓ Reviewed | USGS → |
October 11, 2021 brought a magnitude 3.1 earthquake 106 km W of Dutch Harbor, Alaska, logged at 20:35 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:23:49 UTC | 4.7mb | northern East Pacific Rise 10.097°, -103.972° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 seismic event took place near northern East Pacific Rise on October 11, 2021 at 20:23 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:19:57 UTC | 2.3md | 31km NNW of Bridgeport, CA 38.492°, -119.416° | 0.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 31km NNW of Bridgeport, CA came in on October 11, 2021 at 20:19 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:15:59 UTC | 4.2mb | 43 km W of Taguisa, Philippines 6.644°, 123.644° | 590.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 43 km W of Taguisa, Philippines came in on October 11, 2021 at 20:15 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 20:10:43 UTC | 2.3ml | 3 km SSW of P?hala, Hawaii 19.177°, -155.493° | 33.2 km | 1 | - | - | Auto | USGS → |
On October 11, 2021 at 20:10 UTC, a magnitude 2.3 earthquake struck 3 km SSW of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 12 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 19:40:25 UTC | 4.1ml | 114 km E of Chignik, Alaska 56.285°, -156.557° | 53.4 km | 1 | III | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 114 km E of Chignik, Alaska with origin time 19:40 UTC on October 11, 2021. Coming 11 hours after a magnitude 6.9 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 M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 19:35:57 UTC | 3.1ml | 115 km E of Chignik, Alaska 56.242°, -156.545° | 46.1 km | - | - | - | ✓ Reviewed | USGS → |
On October 11, 2021 at 19:35 UTC, a magnitude 3.1 earthquake struck 115 km E of Chignik, Alaska. Coming 10 hours after a magnitude 6.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 19:24:54 UTC | 4.5mb | Kermadec Islands, New Zealand -30.698°, -177.260° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 19:24 UTC on October 11, 2021, a magnitude 4.5 tremor occurred near Kermadec Islands, New Zealand. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 19:17:00 UTC | 4.4mb | Kepulauan Batu, Indonesia -0.940°, 97.420° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
October 11, 2021 brought a magnitude 4.4 earthquake near Kepulauan Batu, Indonesia, logged at 19:17 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 19:15:19 UTC | 2.2md | 0 km S of P?hala, Hawaii 19.196°, -155.479° | 36.9 km | - | - | - | Auto | USGS → |
This magnitude 2.2 event was detected 0 km S of P?hala, Hawaii on October 11, 2021, with origin time 19:15 UTC. Coming 11 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 19:10:49 UTC | 4.7mb | 109 km NW of Lautoka, Fiji -16.844°, 176.815° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
October 11, 2021 brought a magnitude 4.7 earthquake 109 km NW of Lautoka, Fiji, logged at 19:10 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 19:07:42 UTC | 2.3ml | 45 km WNW of Nanwalek, Alaska 59.568°, -152.597° | 78.5 km | - | - | - | ✓ Reviewed | USGS → |
On October 11, 2021, worldwide seismic activity registered a magnitude 2.3 earthquake 45 km WNW of Nanwalek, Alaska at 19:07 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-11 2021-10-11 19:04:57 UTC | 2.3ml | 116 km E of Chignik, Alaska 56.294°, -156.529° | 69.3 km | - | - | - | ✓ Reviewed | USGS → |
At 19:04 UTC on October 11, 2021, a magnitude 2.3 tremor occurred 116 km E of Chignik, Alaska. It arrived roughly 10 hours after a larger magnitude 6.9 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.3 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 October 11, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.