Earthquakes on October 18, 2021
257
EARTHQUAKES on October 18, 2021
24-hour UTC period · USGS data
LARGEST: M6.2 — 59 km WNW of Sola, Vanuatu
93 km deep · 4 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
34
M3.0–3.9
16
M2.0–2.9
53
M1.0–1.9
151
Activity Summary
257
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
6.2
59 km WNW of Sola, Vanuatu
07:26 UTC · 93.0 km deep
Felt by 4
5.3
79 km S of Mil’kovo, Russia
08:24 UTC · 172.9 km deep
5.1
Off the coast of Aisen, Chile
22:23 UTC · 10.0 km deep
Felt by 1
4.9
southern Mid-Atlantic Ridge
21:28 UTC · 10.0 km deep
4.8
south of the Fiji Islands
06:24 UTC · 492.3 km deep
4.8
23 km NNE of Hualien City, Taiwan
05:49 UTC · 32.5 km deep
Felt by 3
4.7
70 km SE of Kirakira, Solomon Islands
22:43 UTC · 40.5 km deep
4.7
Tristan da Cunha region
19:47 UTC · 10.0 km deep
Earthquake Map — October 18, 2021
All Earthquakes — October 18, 2021
Showing 30 of 106 (filtered from 257)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-10-18 2021-10-18 23:58:07 UTC | 3.2md | 8 km SSE of Lares, Puerto Rico 18.224°, -66.840° | 12.0 km | 5 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.2 earthquake 8 km SSE of Lares, Puerto Rico came in on October 18, 2021 at 23:58 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 22:43:24 UTC | 4.7mb | 70 km SE of Kirakira, Solomon Islands -10.982°, 162.278° | 40.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.7 event was detected 70 km SE of Kirakira, Solomon Islands on October 18, 2021, with origin time 22:43 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 22:35:18 UTC | 2.2md | 1 km SSE of P?hala, Hawaii 19.191°, -155.475° | 34.8 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.2 earthquake 1 km SSE of P?hala, Hawaii came in on October 18, 2021 at 22:35 UTC. It arrived roughly 17 hours after a larger magnitude 3.1 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. | ||||||||
2021-10-18 2021-10-18 22:31:00 UTC | 4.2mb | 5 km SSW of Lázaro Cárdenas, Mexico 15.134°, -92.577° | 85.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 5 km SSW of Lázaro Cárdenas, Mexico on October 18, 2021 at 22:31 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 22:27:49 UTC | 2.1ml | 52 km WSW of Denali Park, Alaska 63.608°, -149.936° | 134.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 52 km WSW of Denali Park, Alaska on October 18, 2021 at 22:27 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 22:23:37 UTC | 5.1mww | Off the coast of Aisen, Chile -45.684°, -77.050° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.1 earthquake near Off the coast of Aisen, Chile with origin time 22:23 UTC on October 18, 2021. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 22:22:47 UTC | 2.3ml | 39 km W of Mentone, Texas 31.706°, -104.018° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 39 km W of Mentone, Texas on October 18, 2021, with origin time 22:22 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 18 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 22:21:32 UTC | 4.5mb | 68 km NW of Dire Dawa, Ethiopia 10.104°, 41.513° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 18, 2021, worldwide seismic activity registered a magnitude 4.5 earthquake 68 km NW of Dire Dawa, Ethiopia at 22:21 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 22:11:35 UTC | 2.8ml | 7 km ENE of P?hala, Hawaii 19.220°, -155.409° | 33.6 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 earthquake was recorded 7 km ENE of P?hala, Hawaii on October 18, 2021 at 22:11 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 17 hours earlier. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 21:59:41 UTC | 3.2ml | 175 km W of Ferndale, California 40.819°, -126.313° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
October 18, 2021 brought a magnitude 3.2 earthquake 175 km W of Ferndale, California, logged at 21:59 UTC. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 21:48:38 UTC | 2.0ml | 56 km NW of Toyah, Texas 31.646°, -104.245° | 7.4 km | - | - | - | ✓ Reviewed | USGS → |
October 18, 2021 brought a magnitude 2.0 earthquake 56 km NW of Toyah, Texas, logged at 21:48 UTC. It arrived roughly 14 hours after a larger magnitude 3.5 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. | ||||||||
2021-10-18 2021-10-18 21:39:28 UTC | 2.1md | 2 km SW of Indios, Puerto Rico 17.977°, -66.839° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 18, 2021 at 21:39 UTC, a magnitude 2.1 earthquake struck 2 km SW of Indios, Puerto Rico. It arrived roughly 14 hours after a larger magnitude 2.9 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. | ||||||||
2021-10-18 2021-10-18 21:28:26 UTC | 4.9mb | southern Mid-Atlantic Ridge -48.979°, -8.507° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 18, 2021, worldwide seismic activity registered a magnitude 4.9 earthquake near southern Mid-Atlantic Ridge at 21:28 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 21:16:42 UTC | 2.0ml | 80 km SE of Akutan, Alaska 53.609°, -164.934° | 58.3 km | - | - | - | ✓ Reviewed | USGS → |
On October 18, 2021 at 21:16 UTC, a magnitude 2.0 earthquake struck 80 km SE of Akutan, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 21:15:59 UTC | 2.1md | 6km WNW of Walker, CA 38.545°, -119.537° | 5.3 km | - | - | - | ✓ Reviewed | USGS → |
At 21:15 UTC on October 18, 2021, a magnitude 2.1 tremor occurred 6km WNW of Walker, CA. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 11 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 21:08:20 UTC | 4.2mb | 111 km SSW of La Esperanza (El Zapotal), Mexico 14.598°, -93.719° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake 111 km SSW of La Esperanza (El Zapotal), Mexico with origin time 21:08 UTC on October 18, 2021. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 20:56:25 UTC | 3.2md | 37 km NW of San Antonio, Puerto Rico 18.721°, -67.355° | 17.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 seismic event took place 37 km NW of San Antonio, Puerto Rico on October 18, 2021 at 20:56 UTC. It arrived roughly 13 hours after a larger magnitude 3.3 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 20:40:39 UTC | 2.5md | 21km ENE of Le Grand, CA 37.292°, -120.025° | 20.2 km | 3 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 21km ENE of Le Grand, CA on October 18, 2021 at 20:40 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 20:24:35 UTC | 3.1ml | 79 km SSE of False Pass, Alaska 54.234°, -162.803° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake 79 km SSE of False Pass, Alaska with origin time 20:24 UTC on October 18, 2021. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 19:47:15 UTC | 4.7mb | Tristan da Cunha region -34.365°, -14.815° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.7 earthquake in the Tristan da Cunha region came in on October 18, 2021 at 19:47 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 19:11:52 UTC | 2.1ml | 79 km NW of Yakutat, Alaska 60.096°, -140.634° | 11.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 79 km NW of Yakutat, Alaska with origin time 19:11 UTC on October 18, 2021. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 18:58:38 UTC | 2.0md | 7 km ENE of P?hala, Hawaii 19.234°, -155.411° | 33.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 7 km ENE of P?hala, Hawaii at 18:58 UTC on October 18, 2021. Coming 13 hours after a magnitude 3.1 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. | ||||||||
2021-10-18 2021-10-18 18:57:39 UTC | 2.9ml | 53 km W of Anchor Point, Alaska 59.835°, -152.785° | 97.2 km | - | - | - | ✓ Reviewed | USGS → |
On October 18, 2021, worldwide seismic activity registered a magnitude 2.9 earthquake 53 km W of Anchor Point, Alaska at 18:57 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 18:40:53 UTC | 2.2ml | 23 km W of Susitna, Alaska 61.538°, -150.960° | 65.5 km | - | - | - | ✓ Reviewed | USGS → |
On October 18, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 23 km W of Susitna, Alaska at 18:40 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 18:32:15 UTC | 4.7mb | Off the coast of Aisen, Chile -45.684°, -77.104° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 seismic event took place near Off the coast of Aisen, Chile on October 18, 2021 at 18:32 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 18:23:07 UTC | 2.2ml | 12 km WNW of Cold Bay, Alaska 55.236°, -162.904° | 105.5 km | - | - | - | ✓ Reviewed | USGS → |
At 18:23 UTC on October 18, 2021, a magnitude 2.2 tremor occurred 12 km WNW of Cold Bay, Alaska. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 18:12:52 UTC | 2.9ml | 7 km E of P?hala, Hawaii 19.215°, -155.405° | 32.8 km | - | - | - | ✓ Reviewed | USGS → |
At 18:12 UTC on October 18, 2021, a magnitude 2.9 tremor occurred 7 km E of P?hala, Hawaii. 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. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 18:10:19 UTC | 4.3mb | 43 km S of Santiago Tepextla, Mexico 15.945°, -98.474° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 43 km S of Santiago Tepextla, Mexico with origin time 18:10 UTC on October 18, 2021. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 18:05:14 UTC | 2.3md | 10 km E of Naalehu, Hawaii 19.072°, -155.475° | 38.8 km | - | - | - | Auto | USGS → |
On October 18, 2021 at 18:05 UTC, a magnitude 2.3 earthquake struck 10 km E of Naalehu, Hawaii. Coming 13 hours after a magnitude 3.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-18 2021-10-18 18:01:47 UTC | 4.5mb | 181 km NW of Port-Olry, Vanuatu -13.961°, 165.803° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:01 UTC on October 18, 2021, a magnitude 4.5 tremor occurred 181 km NW of Port-Olry, Vanuatu. The event was offshore. See the M4.5 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 October 18, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.