Earthquakes on October 1, 2021
308
EARTHQUAKES on October 1, 2021
24-hour UTC period · USGS data
LARGEST: M5.3 — South Sandwich Islands region
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
29
M3.0–3.9
7
M2.0–2.9
58
M1.0–1.9
210
Activity Summary
308
Total earthquakes
~250
Daily average
Elevated
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
5.3
South Sandwich Islands region
15:44 UTC · 10.0 km deep
5.2
185 km SW of Nikolski, Alaska
00:10 UTC · 35.0 km deep
Felt by 3
5.0
57 km NW of Dompu, Indonesia
11:15 UTC · 10.0 km deep
5.0
203 km NNE of Shi Yomi, India
03:49 UTC · 31.6 km deep
4.9
South Sandwich Islands region
19:15 UTC · 10.0 km deep
4.9
24 km N of Bandar-e Gen?veh, Iran
01:15 UTC · 10.0 km deep
Felt by 4
4.8
140 km S of Isangel, Vanuatu
21:47 UTC · 35.0 km deep
4.8
137 km ESE of Chignik, Alaska
14:12 UTC · 44.9 km deep
Felt by 1
Earthquake Map — October 1, 2021
All Earthquakes — October 1, 2021
Showing 30 of 98 (filtered from 308)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-10-01 2021-10-01 23:56:38 UTC | 4.7mb | north of Severnaya Zemlya 84.656°, 102.710° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2021 at 23:56 UTC, a magnitude 4.7 earthquake struck north of Severnaya Zemlya. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 22:59:04 UTC | 4.3mwr | 73 km SSE of Antofagasta, Chile -24.297°, -70.221° | 79.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 73 km SSE of Antofagasta, Chile at 22:59 UTC on October 1, 2021. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 22:42:11 UTC | 2.5ml | 12 km N of Midland, Texas 32.105°, -102.100° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2021 at 22:42 UTC, a magnitude 2.5 earthquake struck 12 km N of Midland, Texas. Coming 1 hours after a magnitude 2.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 22:39:06 UTC | 2.3md | Island of Hawaii, Hawaii 19.187°, -155.478° | 34.0 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.3 earthquake near Island of Hawaii, Hawaii with origin time 22:39 UTC on October 1, 2021. Coming 14 hours after a magnitude 2.8 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. | ||||||||
2021-10-01 2021-10-01 22:38:24 UTC | 2.7ml | 12 km N of Midland, Texas 32.106°, -102.095° | 8.1 km | 15 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 12 km N of Midland, Texas on October 1, 2021, with origin time 22:38 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 22:06:45 UTC | 2.3ml | 4 km E of P?hala, Hawaii 19.198°, -155.440° | 34.7 km | - | - | - | Auto | USGS → |
A magnitude 2.3 earthquake was recorded 4 km E of P?hala, Hawaii on October 1, 2021 at 22:06 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 14 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 22:03:08 UTC | 4.5mb | 74 km SE of Ust’-Kamchatsk Staryy, Russia 55.800°, 163.399° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place 74 km SE of Ust’-Kamchatsk Staryy, Russia on October 1, 2021 at 22:03 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 21:47:01 UTC | 4.8mb | 140 km S of Isangel, Vanuatu -20.814°, 169.266° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected 140 km S of Isangel, Vanuatu on October 1, 2021, with origin time 21:47 UTC. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 21:21:41 UTC | 4.7mb | 49 km NE of Adak, Alaska 52.206°, -176.148° | 129.1 km | - | II | - | ✓ Reviewed | USGS → |
A magnitude 4.7 earthquake was recorded 49 km NE of Adak, Alaska on October 1, 2021 at 21:21 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 21:15:47 UTC | 2.2ml | 54 km E of Pedro Bay, Alaska 59.729°, -153.147° | 102.3 km | - | - | - | ✓ Reviewed | USGS → |
October 1, 2021 brought a magnitude 2.2 earthquake 54 km E of Pedro Bay, Alaska, logged at 21:15 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 21:01:49 UTC | 3.0ml | 186 km W of Port Orford, Oregon 43.045°, -126.740° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
October 1, 2021 brought a magnitude 3.0 earthquake 186 km W of Port Orford, Oregon, logged at 21:01 UTC. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 20:50:53 UTC | 2.4ml | 36 km NNW of Toyah, Texas 31.596°, -103.993° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 36 km NNW of Toyah, Texas on October 1, 2021 at 20:50 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 19:15:00 UTC | 4.9mb | South Sandwich Islands region -60.469°, -27.827° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 19:15 UTC on October 1, 2021, a magnitude 4.9 tremor occurred in the South Sandwich Islands region. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 18:27:28 UTC | 4.7mb | South Sandwich Islands region -56.849°, -25.342° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.7 earthquake in the South Sandwich Islands region with origin time 18:27 UTC on October 1, 2021. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 18:17:41 UTC | 4.0mb | 1 km E of El Espinalillo, Mexico 16.985°, -100.113° | 14.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.0 earthquake 1 km E of El Espinalillo, Mexico with origin time 18:17 UTC on October 1, 2021. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 18:16:19 UTC | 2.1ml | 52 km NW of Toyah, Texas 31.641°, -104.193° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 52 km NW of Toyah, Texas with origin time 18:16 UTC on October 1, 2021. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 18:07:38 UTC | 4.1mb | Fiji region -19.026°, -177.767° | 467.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 seismic event took place in the Fiji region on October 1, 2021 at 18:07 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 18:04:24 UTC | 4.7mb | South Sandwich Islands region -58.833°, -24.873° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2021, worldwide seismic activity registered a magnitude 4.7 earthquake in the South Sandwich Islands region at 18:04 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 18:02:59 UTC | 2.3md | 4 km E of P?hala, Hawaii 19.200°, -155.440° | 34.0 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.3 earthquake 4 km E of P?hala, Hawaii came in on October 1, 2021 at 18:02 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 10 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 17:53:04 UTC | 4.1mb | south of the Fiji Islands -23.726°, -177.026° | 149.1 km | - | - | - | ✓ Reviewed | USGS → |
October 1, 2021 brought a magnitude 4.1 earthquake south of the Fiji Islands, logged at 17:53 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 17:52:07 UTC | 2.1ml | 17 km NW of Skwentna, Alaska 62.113°, -151.618° | 96.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2021, worldwide seismic activity registered a magnitude 2.1 earthquake 17 km NW of Skwentna, Alaska at 17:52 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 17:28:50 UTC | 2.2ml | south of Alaska 54.566°, -159.893° | 21.2 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2021 at 17:28 UTC, a magnitude 2.2 earthquake struck south of Alaska. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 5 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 17:27:29 UTC | 2.0ml | 39 km ESE of Mina, Nevada 38.196°, -117.726° | 9.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 39 km ESE of Mina, Nevada with origin time 17:27 UTC on October 1, 2021. Coming 2 hours after a magnitude 2.5 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. | ||||||||
2021-10-01 2021-10-01 17:14:20 UTC | 2.8ml | 5 km NNE of Parkville, Minnesota 47.576°, -92.555° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 5 km NNE of Parkville, Minnesota with origin time 17:14 UTC on October 1, 2021. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 17:01:41 UTC | 2.1ml | 57 km SSW of Goldfield, Nevada 37.201°, -117.371° | 8.5 km | - | - | - | ✓ Reviewed | USGS → |
At 17:01 UTC on October 1, 2021, a magnitude 2.1 tremor occurred 57 km SSW of Goldfield, Nevada. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 16:07:23 UTC | 2.1ml | 12 km W of Aguilar, Colorado 37.395°, -104.796° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 12 km W of Aguilar, Colorado at 16:07 UTC on October 1, 2021. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 15:44:06 UTC | 5.3mb | South Sandwich Islands region -60.529°, -26.360° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2021 at 15:44 UTC, a magnitude 5.3 earthquake struck in the South Sandwich Islands region. It is the largest earthquake currently listed for worldwide seismic activity on October 1, 2021. See the M5.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 15:40:25 UTC | 3.6md | 68 km E of Cruz Bay, U.S. Virgin Islands 18.232°, -64.151° | 44.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.6 event was detected 68 km E of Cruz Bay, U.S. Virgin Islands on October 1, 2021, with origin time 15:40 UTC. The event was offshore. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 15:31:04 UTC | 2.5ml | 34 km SE of Mina, Nevada 38.134°, -117.887° | 8.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 34 km SE of Mina, Nevada on October 1, 2021 at 15:31 UTC. In the 72 hours after this event, the USGS recorded 10 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-10-01 2021-10-01 15:30:00 UTC | 2.1ml | 55 km NW of Toyah, Texas 31.611°, -104.258° | 6.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 55 km NW of Toyah, Texas on October 1, 2021, with origin time 15:30 UTC. Coming 3 hours after a magnitude 2.4 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. | ||||||||
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 1, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.