Earthquakes on September 8, 2021
350
EARTHQUAKES on September 8, 2021
24-hour UTC period · USGS data
LARGEST: M7.0 — Acapulco, Mexico
20 km deep · 665 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
7
M4.0–4.9
48
M3.0–3.9
9
M2.0–2.9
66
M1.0–1.9
220
Activity Summary
350
Total earthquakes
~250
Daily average
Elevated
Activity level
7
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
7.0
Acapulco, Mexico
01:47 UTC · 20.0 km deep
Felt by 665
5.5
West Chile Rise
16:37 UTC · 10.0 km deep
5.4
West Chile Rise
23:48 UTC · 10.0 km deep
5.4
66 km W of Murghob, Tajikistan
05:20 UTC · 35.0 km deep
Felt by 3
5.3
West Chile Rise
23:13 UTC · 10.0 km deep
5.2
West Chile Rise
21:17 UTC · 10.0 km deep
5.1
221 km W of Agat Village, Guam
03:03 UTC · 10.0 km deep
4.9
West Chile Rise
15:37 UTC · 10.0 km deep
Earthquake Map — September 8, 2021

All Earthquakes — September 8, 2021
Showing 30 of 130 (filtered from 350)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-09-08 2021-09-08 23:55:39 UTC | 2.4ml | 56 km S of Whites City, New Mexico 31.669°, -104.385° | 7.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 56 km S of Whites City, New Mexico on September 8, 2021 at 23:55 UTC. It arrived roughly 2 hours after a larger magnitude 4.3 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. | ||||||||
2021-09-08 2021-09-08 23:48:44 UTC | 5.4mww | West Chile Rise -38.204°, -93.709° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.4 earthquake near West Chile Rise with origin time 23:48 UTC on September 8, 2021. Coming 7 hours after a magnitude 5.5 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 M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 23:43:49 UTC | 2.2md | Island of Hawaii, Hawaii 19.162°, -155.472° | 33.8 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.2 earthquake near Island of Hawaii, Hawaii with origin time 23:43 UTC on September 8, 2021. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 23:32:00 UTC | 2.1ml | 56 km S of Whites City, New Mexico 31.667°, -104.371° | 6.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 56 km S of Whites City, New Mexico on September 8, 2021, with origin time 23:32 UTC. Coming 1 hours after a magnitude 4.3 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. | ||||||||
2021-09-08 2021-09-08 23:26:52 UTC | 2.2md | 3 km SSE of P?hala, Hawaii 19.177°, -155.469° | 35.6 km | - | - | - | Auto | USGS → |
On September 8, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 3 km SSE of P?hala, Hawaii at 23:26 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 23:13:47 UTC | 5.3mww | West Chile Rise -38.190°, -93.846° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:13 UTC on September 8, 2021, a magnitude 5.3 tremor occurred near West Chile Rise. This event falls inside the aftershock decay of a nearby magnitude 5.5 earthquake that occurred about 7 hours earlier. See the M5.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 23:04:32 UTC | 4.5mb | West Chile Rise -38.223°, -93.870° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.5 event was detected near West Chile Rise on September 8, 2021, with origin time 23:04 UTC. Coming 6 hours after a magnitude 5.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 23:04:02 UTC | 2.4ml | 57 km S of Whites City, New Mexico 31.657°, -104.425° | 6.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.4 earthquake 57 km S of Whites City, New Mexico with origin time 23:04 UTC on September 8, 2021. 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 M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 22:54:17 UTC | 4.5mb | West Chile Rise -38.486°, -93.767° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake near West Chile Rise came in on September 8, 2021 at 22:54 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 22:49:13 UTC | 4.8mb | West Chile Rise -38.182°, -93.914° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2021 at 22:49 UTC, a magnitude 4.8 earthquake struck near West Chile Rise. This event falls inside the aftershock decay of a nearby magnitude 5.5 earthquake that occurred about 6 hours earlier. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 22:43:05 UTC | 4.3mb | Fiji region -18.345°, -177.723° | 566.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place in the Fiji region on September 8, 2021 at 22:43 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 22:17:26 UTC | 4.7mb | West Chile Rise -38.187°, -93.853° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.7 earthquake near West Chile Rise with origin time 22:17 UTC on September 8, 2021. It arrived roughly 6 hours after a larger magnitude 5.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 22:16:55 UTC | 4.2mb | 59 km E of Iwaki, Japan 37.118°, 141.546° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 59 km E of Iwaki, Japan on September 8, 2021, with origin time 22:16 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 22:13:45 UTC | 2.0ml | 54 km S of Whites City, New Mexico 31.682°, -104.373° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 54 km S of Whites City, New Mexico at 22:13 UTC. It arrived roughly 1 hours after a larger magnitude 4.3 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. | ||||||||
2021-09-08 2021-09-08 22:10:26 UTC | 4.4mb | northern Mid-Atlantic Ridge 50.907°, -29.840° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake near northern Mid-Atlantic Ridge at 22:10 UTC on September 8, 2021. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 22:08:12 UTC | 2.3ml | 56 km S of Whites City, New Mexico 31.669°, -104.370° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
At 22:08 UTC on September 8, 2021, a magnitude 2.3 tremor occurred 56 km S of Whites City, New Mexico. 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 22:02:05 UTC | 4.3ml | 55 km S of Whites City, New Mexico 31.672°, -104.377° | 6.1 km | 4 | IV | - | ✓ Reviewed | USGS → |
September 8, 2021 brought a magnitude 4.3 earthquake 55 km S of Whites City, New Mexico, logged at 22:02 UTC. In the 72 hours after this event, the USGS recorded 8 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 21:56:48 UTC | 4.7mb | West Chile Rise -38.180°, -93.789° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2021, worldwide seismic activity registered a magnitude 4.7 earthquake near West Chile Rise at 21:56 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.5 earthquake that occurred about 5 hours earlier. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 21:42:17 UTC | 4.7mb | South Sandwich Islands region -58.396°, -25.527° | 53.8 km | - | - | - | ✓ Reviewed | USGS → |
At 21:42 UTC on September 8, 2021, a magnitude 4.7 tremor occurred in the South Sandwich Islands region. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 21:42:09 UTC | 3.3ml | 75 km NNW of Rachel, Nevada 38.288°, -116.011° | 4.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.3 event was detected 75 km NNW of Rachel, Nevada on September 8, 2021, with origin time 21:42 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 21:36:31 UTC | 4.3mb | West Chile Rise -38.145°, -93.674° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2021 at 21:36 UTC, a magnitude 4.3 earthquake struck near West Chile Rise. This event falls inside the aftershock decay of a nearby magnitude 5.5 earthquake that occurred about 5 hours earlier. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 21:25:30 UTC | 4.5mb | West Chile Rise -38.268°, -93.748° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place near West Chile Rise on September 8, 2021 at 21:25 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.5 earthquake that occurred about 5 hours earlier. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 21:17:52 UTC | 3.0ml | 6km NNW of Delta, B.C., MX 32.409°, -115.206° | 16.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2021 at 21:17 UTC, a magnitude 3.0 earthquake struck 6km NNW of Delta, B.C., MX. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 21:17:34 UTC | 5.2mww | West Chile Rise -38.236°, -93.559° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.2 earthquake near West Chile Rise at 21:17 UTC on September 8, 2021. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 20:40:58 UTC | 4.2mb | 158 km ESE of Labasa, Fiji -16.984°, -179.269° | 579.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 158 km ESE of Labasa, Fiji came in on September 8, 2021 at 20:40 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. | ||||||||
2021-09-08 2021-09-08 20:04:54 UTC | 2.4ml | 30 km ENE of Honaunau-Napoopoo, Hawaii 19.549°, -155.591° | 5.7 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2021 at 20:04 UTC, a magnitude 2.4 earthquake struck 30 km ENE of Honaunau-Napoopoo, Hawaii. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 20:01:24 UTC | 2.5ml | 14km NE of Coso Junction, CA 36.138°, -117.836° | 2.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 14km NE of Coso Junction, CA on September 8, 2021, with origin time 20:01 UTC. 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. | ||||||||
2021-09-08 2021-09-08 19:35:27 UTC | 3.0ml | 190 km SE of Chignik, Alaska 55.310°, -155.912° | 32.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.0 earthquake was recorded 190 km SE of Chignik, Alaska on September 8, 2021 at 19:35 UTC. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 19:15:06 UTC | 2.2ml | 88 km ENE of Port Alsworth, Alaska 60.633°, -152.974° | 137.2 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2021 at 19:15 UTC, a magnitude 2.2 earthquake struck 88 km ENE of Port Alsworth, Alaska. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-09-08 2021-09-08 19:12:01 UTC | 2.2ml | 17km E of Ridgecrest, CA 35.612°, -117.483° | 4.9 km | - | - | - | ✓ Reviewed | USGS → |
On September 8, 2021 at 19:12 UTC, a magnitude 2.2 earthquake struck 17km E of Ridgecrest, CA. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 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 8, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.