Earthquakes on October 27, 2021
278
EARTHQUAKES on October 27, 2021
24-hour UTC period · USGS data
LARGEST: M4.9 — south of the Kermadec Islands
47 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
0
M4.0–4.9
23
M3.0–3.9
15
M2.0–2.9
76
M1.0–1.9
164
Activity Summary
278
Total earthquakes
~250
Daily average
Normal
Activity level
0
M5.0+ events
Significant Earthquakes (M4.5+)
4.9
south of the Kermadec Islands
06:10 UTC · 47.4 km deep
4.9
214 km SSE of Ola, Russia
02:42 UTC · 10.0 km deep
04.8
43 km SW of Suai, Timor Leste
05:50 UTC · 38.4 km deep
4.7
260 km SSE of Ambon, Indonesia
20:41 UTC · 326.2 km deep
4.5
south of the Fiji Islands
07:32 UTC · 498.9 km deep
4.5
79 km S of Finschhafen, Papua New Guinea
03:27 UTC · 35.0 km deep
Earthquake Map — October 27, 2021
All Earthquakes — October 27, 2021
Showing 30 of 114 (filtered from 278)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-10-27 2021-10-27 23:58:32 UTC | 2.1ml | 56 km S of Whites City, New Mexico 31.667°, -104.386° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 56 km S of Whites City, New Mexico with origin time 23:58 UTC on October 27, 2021. Coming 7 hours after a magnitude 2.8 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. | ||||||||
2021-10-27 2021-10-27 22:58:09 UTC | 4.1mb | 41 km ESE of Port-Vila, Vanuatu -17.922°, 168.652° | 132.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.1 event was detected 41 km ESE of Port-Vila, Vanuatu on October 27, 2021, with origin time 22:58 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 22:35:37 UTC | 4.4mb | 150 km N of Tobelo, Indonesia 3.076°, 128.224° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 150 km N of Tobelo, Indonesia on October 27, 2021, with origin time 22:35 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 22:31:48 UTC | 3.9mb | 48 km ESE of Nikolski, Alaska 52.802°, -168.185° | 41.8 km | - | III | - | ✓ Reviewed | USGS → |
On October 27, 2021, worldwide seismic activity registered a magnitude 3.9 earthquake 48 km ESE of Nikolski, Alaska at 22:31 UTC. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 22:21:51 UTC | 4.0mb | 51 km WNW of San Antonio de los Cobres, Argentina -24.085°, -66.806° | 199.6 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 earthquake was recorded 51 km WNW of San Antonio de los Cobres, Argentina on October 27, 2021 at 22:21 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 21:38:28 UTC | 4.0mb | 11 km N of Tuzlukçu, Turkey 38.582°, 31.637° | 10.0 km | 3 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.0 earthquake 11 km N of Tuzlukçu, Turkey with origin time 21:38 UTC on October 27, 2021. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 21:26:58 UTC | 2.7ml | 114 km E of Chignik, Alaska 56.319°, -156.556° | 50.5 km | - | - | - | ✓ Reviewed | USGS → |
On October 27, 2021, worldwide seismic activity registered a magnitude 2.7 earthquake 114 km E of Chignik, Alaska at 21:26 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 21:22:24 UTC | 2.3md | 16 km SSE of Sunnyside, Utah 39.420°, -110.288° | -3.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 seismic event took place 16 km SSE of Sunnyside, Utah on October 27, 2021 at 21:22 UTC. This is the shallowest earthquake in the current dataset — a shallow crustal event. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 21:04:23 UTC | 3.2ml | 9 km SSE of Gardendale, Texas 31.943°, -102.328° | 7.8 km | 40 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 earthquake was recorded 9 km SSE of Gardendale, Texas on October 27, 2021 at 21:04 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 20:53:56 UTC | 4.2mb | 41 km SE of Ichinohe, Japan 39.939°, 141.615° | 72.4 km | 1 | - | - | ✓ Reviewed | USGS → |
On October 27, 2021, worldwide seismic activity registered a magnitude 4.2 earthquake 41 km SE of Ichinohe, Japan at 20:53 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 20:41:57 UTC | 4.7mb | 260 km SSE of Ambon, Indonesia -5.985°, 128.726° | 326.2 km | - | - | - | ✓ Reviewed | USGS → |
On October 27, 2021, worldwide seismic activity registered a magnitude 4.7 earthquake 260 km SSE of Ambon, Indonesia at 20:41 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 20:40:40 UTC | 2.0ml | 58 km ESE of Sand Point, Alaska 55.138°, -159.645° | 36.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 58 km ESE of Sand Point, Alaska on October 27, 2021 at 20:40 UTC. It arrived roughly 1 hours after a larger magnitude 2.1 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. | ||||||||
2021-10-27 2021-10-27 20:12:23 UTC | 2.1md | 5 km ESE of P?hala, Hawaii 19.190°, -155.426° | 33.8 km | - | - | - | Auto | USGS → |
On October 27, 2021, worldwide seismic activity registered a magnitude 2.1 earthquake 5 km ESE of P?hala, Hawaii at 20:12 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 1 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 20:03:30 UTC | 2.1ml | 75 km ESE of Sand Point, Alaska 55.106°, -159.379° | 11.2 km | - | - | - | ✓ Reviewed | USGS → |
On October 27, 2021, worldwide seismic activity registered a magnitude 2.1 earthquake 75 km ESE of Sand Point, Alaska at 20:03 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 20:03:23 UTC | 2.1ml | 111 km E of Chignik, Alaska 56.266°, -156.609° | 55.1 km | - | - | - | ✓ Reviewed | USGS → |
At 20:03 UTC on October 27, 2021, a magnitude 2.1 tremor occurred 111 km E of Chignik, Alaska. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 14 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 19:44:39 UTC | 2.9ml | 1 km SSW of P?hala, Hawaii 19.194°, -155.484° | 32.6 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.9 event was detected 1 km SSW of P?hala, Hawaii on October 27, 2021, with origin time 19:44 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 19:21:07 UTC | 2.1ml | 7 km SSE of Plummer, Idaho 47.270°, -116.851° | -0.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 7 km SSE of Plummer, Idaho at 19:21 UTC on October 27, 2021. 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. | ||||||||
2021-10-27 2021-10-27 19:07:27 UTC | 2.5ml | 110 km ESE of Akutan, Alaska 53.840°, -164.172° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 110 km ESE of Akutan, Alaska with origin time 19:07 UTC on October 27, 2021. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 19:05:54 UTC | 2.3ml | 180 km SSW of Akhiok, Alaska 55.544°, -155.630° | 40.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 180 km SSW of Akhiok, Alaska on October 27, 2021 at 19:05 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 18:27:01 UTC | 2.1ml | 69 km E of Denali Park, Alaska 63.632°, -147.531° | 73.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 69 km E of Denali Park, Alaska at 18:27 UTC on October 27, 2021. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 18:13:48 UTC | 4.3mb | 190 km SE of Sarangani, Philippines 4.196°, 126.686° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 190 km SE of Sarangani, Philippines on October 27, 2021 at 18:13 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 18:00:31 UTC | 2.2ml | western Texas 31.665°, -104.318° | 7.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake near western Texas with origin time 18:00 UTC on October 27, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 14 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 17:50:24 UTC | 3.6ml | 204 km WSW of Adak, Alaska 51.315°, -179.452° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.6 seismic event took place 204 km WSW of Adak, Alaska on October 27, 2021 at 17:50 UTC. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 17:50:05 UTC | 2.4ml | 8 km NW of Parkdale, Oregon 45.575°, -121.672° | 7.8 km | 3 | - | - | ✓ Reviewed | USGS → |
At 17:50 UTC on October 27, 2021, a magnitude 2.4 tremor occurred 8 km NW of Parkdale, Oregon. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 17:23:49 UTC | 2.3ml | 42 km NW of Beluga, Alaska 61.457°, -151.530° | 72.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 42 km NW of Beluga, Alaska with origin time 17:23 UTC on October 27, 2021. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 17:20:54 UTC | 2.1ml | 56 km S of Whites City, New Mexico 31.668°, -104.385° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 56 km S of Whites City, New Mexico on October 27, 2021, with origin time 17:20 UTC. It arrived roughly 1 hours after a larger magnitude 2.8 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. | ||||||||
2021-10-27 2021-10-27 17:17:53 UTC | 2.8ml | 56 km S of Whites City, New Mexico 31.670°, -104.394° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
October 27, 2021 brought a magnitude 2.8 earthquake 56 km S of Whites City, New Mexico, logged at 17:17 UTC. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 17:07:41 UTC | 2.9ml | 128 km SSE of Sand Point, Alaska 54.276°, -159.691° | 19.4 km | - | - | - | ✓ Reviewed | USGS → |
On October 27, 2021 at 17:07 UTC, a magnitude 2.9 earthquake struck 128 km SSE of Sand Point, Alaska. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 16:47:59 UTC | 2.4md | 3 km W of Indios, Puerto Rico 17.990°, -66.847° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 3 km W of Indios, Puerto Rico at 16:47 UTC on October 27, 2021. Coming 12 hours after a magnitude 2.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-27 2021-10-27 16:19:50 UTC | 3.8mb | 179 km WNW of Nikolski, Alaska 53.543°, -171.353° | 253.3 km | - | I | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.8 earthquake 179 km WNW of Nikolski, Alaska at 16:19 UTC on October 27, 2021. See the M3.8 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 27, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.