Earthquakes on October 12, 2021
247
EARTHQUAKES on October 12, 2021
24-hour UTC period · USGS data
LARGEST: M6.4 — 4 km SW of Palekastro, Greece
20 km deep · 198 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
36
M3.0–3.9
14
M2.0–2.9
58
M1.0–1.9
135
Activity Summary
247
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.4
4 km SW of Palekastro, Greece
09:24 UTC · 20.0 km deep
Felt by 198
5.4
Vanuatu region
06:04 UTC · 519.5 km deep
5.0
64 km NW of Kandrian, Papua New Guinea
18:44 UTC · 106.8 km deep
5.0
7 km NNW of Cepitá, Colombia
04:51 UTC · 151.9 km deep
Felt by 17
4.9
11 km SSW of Tapay, Peru
04:00 UTC · 10.0 km deep
4.9
136 km WSW of Itoman, Japan
03:35 UTC · 27.3 km deep
4.9
Izu Islands, Japan region
03:19 UTC · 10.0 km deep
4.8
89 km SSW of Opunake, New Zealand
01:55 UTC · 163.7 km deep
Felt by 54
Earthquake Map — October 12, 2021
All Earthquakes — October 12, 2021
Showing 30 of 112 (filtered from 247)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-10-12 2021-10-12 23:56:15 UTC | 2.0md | 6 km ENE of P?hala, Hawaii 19.230°, -155.421° | 32.8 km | - | - | - | Auto | USGS → |
At 23:56 UTC on October 12, 2021, a magnitude 2.0 tremor occurred 6 km ENE of P?hala, Hawaii. Coming 7 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 23:50:53 UTC | 3.0ml | 90 km SSE of Akutan, Alaska 53.421°, -165.100° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.0 earthquake was recorded 90 km SSE of Akutan, Alaska on October 12, 2021 at 23:50 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 23:37:04 UTC | 3.0ml | 108 km SE of Atka, Alaska 51.571°, -172.990° | 30.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.0 earthquake 108 km SE of Atka, Alaska with origin time 23:37 UTC on October 12, 2021. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 23:21:57 UTC | 2.0md | 5 km S of P?hala, Hawaii 19.156°, -155.477° | 35.1 km | - | - | - | Auto | USGS → |
On October 12, 2021 at 23:21 UTC, a magnitude 2.0 earthquake struck 5 km S of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 7 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 22:48:06 UTC | 2.1ml | 37 km NW of Valdez, Alaska 61.388°, -146.791° | 12.4 km | - | - | - | ✓ Reviewed | USGS → |
At 22:48 UTC on October 12, 2021, a magnitude 2.1 tremor occurred 37 km NW of Valdez, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 22:46:01 UTC | 2.1ml | 55 km S of Whites City, New Mexico 31.675°, -104.403° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 55 km S of Whites City, New Mexico at 22:46 UTC on October 12, 2021. Coming 17 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 22:41:30 UTC | 2.3ml | 22 km SSE of Naalehu, Hawaii 18.879°, -155.512° | 34.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 seismic event took place 22 km SSE of Naalehu, Hawaii on October 12, 2021 at 22:41 UTC. It arrived roughly 7 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 22:17:16 UTC | 2.0md | 8 km WSW of Guánica, Puerto Rico 17.938°, -66.975° | 16.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 8 km WSW of Guánica, Puerto Rico with origin time 22:17 UTC on October 12, 2021. It arrived roughly 17 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. | ||||||||
2021-10-12 2021-10-12 21:31:17 UTC | 2.4md | 8 km SSE of Maria Antonia, Puerto Rico 17.901°, -66.864° | 13.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 8 km SSE of Maria Antonia, Puerto Rico on October 12, 2021 at 21:31 UTC. Coming 16 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. | ||||||||
2021-10-12 2021-10-12 21:18:08 UTC | 2.2ml | 114 km E of Chignik, Alaska 56.330°, -156.560° | 58.2 km | - | - | - | ✓ Reviewed | USGS → |
On October 12, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 114 km E of Chignik, Alaska at 21:18 UTC. Coming 17 hours after a magnitude 3.4 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. | ||||||||
2021-10-12 2021-10-12 20:51:12 UTC | 2.6md | 6 km WSW of Guánica, Puerto Rico 17.942°, -66.964° | 13.0 km | - | - | - | ✓ Reviewed | USGS → |
October 12, 2021 brought a magnitude 2.6 earthquake 6 km WSW of Guánica, Puerto Rico, logged at 20:51 UTC. It arrived roughly 16 hours after a larger magnitude 2.8 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. | ||||||||
2021-10-12 2021-10-12 20:41:40 UTC | 2.8ml | 106 km SSE of Sand Point, Alaska 54.455°, -159.863° | 15.2 km | - | - | - | ✓ Reviewed | USGS → |
October 12, 2021 brought a magnitude 2.8 earthquake 106 km SSE of Sand Point, Alaska, logged at 20:41 UTC. Coming 16 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 20:30:27 UTC | 2.1ml | 120 km SSE of Ugashik, Alaska 56.554°, -156.492° | 72.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 120 km SSE of Ugashik, Alaska on October 12, 2021, with origin time 20:30 UTC. It arrived roughly 1 hours after a larger magnitude 3.3 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. | ||||||||
2021-10-12 2021-10-12 20:23:15 UTC | 2.0ml | 65 km WNW of Nanwalek, Alaska 59.541°, -153.025° | 97.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 65 km WNW of Nanwalek, Alaska on October 12, 2021, with origin time 20:23 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 20:03:01 UTC | 3.9md | 31 km S of Boca de Yuma, Dominican Republic 18.093°, -68.583° | 172.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 12, 2021 at 20:03 UTC, a magnitude 3.9 earthquake struck 31 km S of Boca de Yuma, Dominican Republic. The event was offshore. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 19:50:15 UTC | 3.3ml | 24km SE of Santa Cruz Is. (E end), CA 33.874°, -119.344° | 5.9 km | 17 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 seismic event took place 24km SE of Santa Cruz Is. (E end), CA on October 12, 2021 at 19:50 UTC. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 19:44:59 UTC | 2.2md | 7 km E of P?hala, Hawaii 19.203°, -155.408° | 34.5 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.2 earthquake 7 km E of P?hala, Hawaii came in on October 12, 2021 at 19:44 UTC. It arrived roughly 3 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 19:12:58 UTC | 2.0ml | 7 km ESE of Molalla, Oregon 45.110°, -122.497° | -0.5 km | - | - | - | ✓ Reviewed | USGS → |
On October 12, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 7 km ESE of Molalla, Oregon at 19:12 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. | ||||||||
2021-10-12 2021-10-12 19:05:08 UTC | 3.3ml | 115 km E of Chignik, Alaska 56.408°, -156.544° | 67.4 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.3 event was detected 115 km E of Chignik, Alaska on October 12, 2021, with origin time 19:05 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 14 hours earlier. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 18:47:57 UTC | 3.2ml | 113 km E of Chignik, Alaska 56.356°, -156.566° | 46.5 km | - | - | - | ✓ Reviewed | USGS → |
October 12, 2021 brought a magnitude 3.2 earthquake 113 km E of Chignik, Alaska, logged at 18:47 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 14 hours earlier. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 18:44:05 UTC | 5.0mb | 64 km NW of Kandrian, Papua New Guinea -5.837°, 149.099° | 106.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake 64 km NW of Kandrian, Papua New Guinea with origin time 18:44 UTC on October 12, 2021. The event was offshore. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 18:33:29 UTC | 4.0mb | 65 km SSE of Pondaguitan, Philippines 5.823°, 126.431° | 141.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 seismic event took place 65 km SSE of Pondaguitan, Philippines on October 12, 2021 at 18:33 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 18:01:52 UTC | 4.4mb | 84 km NW of Coquimbo, Chile -29.402°, -71.936° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:01 UTC on October 12, 2021, a magnitude 4.4 tremor occurred 84 km NW of Coquimbo, Chile. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 17:47:04 UTC | 4.5mb | south of the Fiji Islands -24.315°, -179.937° | 517.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place south of the Fiji Islands on October 12, 2021 at 17:47 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 17:32:23 UTC | 4.5mb | South Sandwich Islands region -59.709°, -26.683° | 73.3 km | - | - | - | ✓ Reviewed | USGS → |
October 12, 2021 brought a magnitude 4.5 earthquake in the South Sandwich Islands region, logged at 17:32 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 17:23:23 UTC | 3.7ml | 46 km S of Adak, Alaska 51.455°, -176.646° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.7 earthquake 46 km S of Adak, Alaska with origin time 17:23 UTC on October 12, 2021. The event was offshore. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 17:20:52 UTC | 2.1md | 3km WNW of Crockett, CA 38.060°, -122.245° | 7.8 km | 4 | - | - | ✓ Reviewed | USGS → |
On October 12, 2021 at 17:20 UTC, a magnitude 2.1 earthquake struck 3km WNW of Crockett, CA. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 17:19:05 UTC | 4.5mb | Kermadec Islands, New Zealand -29.892°, -177.505° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 12, 2021 at 17:19 UTC, a magnitude 4.5 earthquake struck near Kermadec Islands, New Zealand. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 16:53:58 UTC | 2.9ml | 33 km SE of Mina, Nevada 38.171°, -117.848° | 9.8 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 33 km SE of Mina, Nevada at 16:53 UTC on October 12, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.5 earthquake that occurred about 8 hours earlier. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-12 2021-10-12 16:53:41 UTC | 4.6mb | Kermadec Islands, New Zealand -30.586°, -178.218° | 34.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.6 earthquake near Kermadec Islands, New Zealand with origin time 16:53 UTC on October 12, 2021. See the M4.6 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 12, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.