Earthquakes on October 1, 2020
500
EARTHQUAKES on October 1, 2020
24-hour UTC period · USGS data
74 km deep · 8 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
24
M3.0–3.9
15
M2.0–2.9
101
M1.0–1.9
356
Activity Summary
500
Total earthquakes
~250
Daily average
Elevated
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
6.1
100 km WNW of Kandrian, Papua New Guinea
10:34 UTC · 74.0 km deep
Felt by 8
5.3
76 km SW of Atka, Alaska
10:25 UTC · 40.2 km deep
Felt by 2
5.0
237 km WSW of Tual, Indonesia
18:15 UTC · 102.0 km deep
5.0
Dodecanese Islands, Greece
11:05 UTC · 154.4 km deep
4.8
197 km NE of Angoram, Papua New Guinea
22:04 UTC · 10.0 km deep
4.8
Mid-Indian Ridge
11:12 UTC · 10.0 km deep
4.7
Chagos Archipelago region
21:07 UTC · 10.0 km deep
4.6
near the coast of Chiapas, Mexico
22:56 UTC · 35.0 km deep
Earthquake Map — October 1, 2020
All Earthquakes — October 1, 2020
Showing 30 of 144 (filtered from 500)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-10-01 2020-10-01 23:58:10 UTC | 2.5ml | 3km ENE of Westmorland, CA 33.049°, -115.589° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 3km ENE of Westmorland, CA with origin time 23:58 UTC on October 1, 2020. It arrived roughly 1 hours after a larger magnitude 3.9 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 23:33:30 UTC | 2.4md | 3 km S of P?hala, Hawaii 19.175°, -155.475° | 31.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 3 km S of P?hala, Hawaii on October 1, 2020 at 23:33 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 2 hours earlier. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 23:31:01 UTC | 2.5ml | 96 km SSE of Akhiok, Alaska 56.132°, -153.640° | 31.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 96 km SSE of Akhiok, Alaska at 23:31 UTC on October 1, 2020. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 23:15:07 UTC | 2.5ml | 3km E of Westmorland, CA 33.034°, -115.585° | 8.3 km | 1 | - | - | ✓ Reviewed | USGS → |
October 1, 2020 brought a magnitude 2.5 earthquake 3km E of Westmorland, CA, logged at 23:15 UTC. It arrived roughly 1 hours after a larger magnitude 3.9 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 23:13:03 UTC | 4.5mwr | 72 km W of San Antonio de los Cobres, Argentina -24.163°, -67.033° | 174.5 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2020, worldwide seismic activity registered a magnitude 4.5 earthquake 72 km W of San Antonio de los Cobres, Argentina at 23:13 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 23:04:16 UTC | 2.1ml | 12km WSW of Searles Valley, CA 35.730°, -117.530° | 0.9 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2020 at 23:04 UTC, a magnitude 2.1 earthquake struck 12km WSW of Searles Valley, CA. 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. | ||||||||
2020-10-01 2020-10-01 23:03:58 UTC | 2.8ml | 5km NE of Westmorland, CA 33.064°, -115.581° | 7.2 km | 2 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.8 earthquake 5km NE of Westmorland, CA came in on October 1, 2020 at 23:03 UTC. Coming 1 hours after a magnitude 3.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 23:01:46 UTC | 2.2ml | 5km NE of Westmorland, CA 33.063°, -115.576° | 5.4 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2020, worldwide seismic activity registered a magnitude 2.2 earthquake 5km NE of Westmorland, CA at 23:01 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.9 earthquake that occurred about 1 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:56:59 UTC | 2.2ml | 8km NNE of Westmorland, CA 33.104°, -115.600° | 3.7 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2020 at 22:56 UTC, a magnitude 2.2 earthquake struck 8km NNE of Westmorland, CA. This event falls inside the aftershock decay of a nearby magnitude 3.9 earthquake that occurred about 1 hours earlier. 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. | ||||||||
2020-10-01 2020-10-01 22:56:47 UTC | 2.0ml | 30 km SSE of Mina, Nevada 38.123°, -118.038° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2020 at 22:56 UTC, a magnitude 2.0 earthquake struck 30 km SSE of Mina, Nevada. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:56:18 UTC | 4.6mb | near the coast of Chiapas, Mexico 14.312°, -92.915° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake near near the coast of Chiapas, Mexico came in on October 1, 2020 at 22:56 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:54:34 UTC | 2.6ml | 4km NE of Westmorland, CA 33.070°, -115.593° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 4km NE of Westmorland, CA came in on October 1, 2020 at 22:54 UTC. It arrived roughly 1 hours after a larger magnitude 3.9 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:50:38 UTC | 2.5ml | 4km ENE of Westmorland, CA 33.054°, -115.587° | 2.1 km | - | - | - | ✓ Reviewed | USGS → |
On October 1, 2020, worldwide seismic activity registered a magnitude 2.5 earthquake 4km ENE of Westmorland, CA at 22:50 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.9 earthquake that occurred about 1 hours earlier. 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. | ||||||||
2020-10-01 2020-10-01 22:50:00 UTC | 2.6ml | 8km NNE of Westmorland, CA 33.107°, -115.599° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 8km NNE of Westmorland, CA at 22:50 UTC on October 1, 2020. Coming 1 hours after a magnitude 3.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:47:30 UTC | 3.9mw | 4km ENE of Westmorland, CA 33.059°, -115.582° | 10.9 km | 6 | V | - | ✓ Reviewed | USGS → |
A magnitude 3.9 seismic event took place 4km ENE of Westmorland, CA on October 1, 2020 at 22:47 UTC. In the 72 hours after this event, the USGS recorded 43 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:41:29 UTC | 2.0md | 6 km ENE of P?hala, Hawaii 19.227°, -155.422° | 31.5 km | - | - | - | Auto | USGS → |
A magnitude 2.0 earthquake was recorded 6 km ENE of P?hala, Hawaii on October 1, 2020 at 22:41 UTC. It arrived roughly 1 hours after a larger magnitude 2.7 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. | ||||||||
2020-10-01 2020-10-01 22:29:48 UTC | 2.4ml | 4km ENE of Westmorland, CA 33.058°, -115.583° | 5.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 4km ENE of Westmorland, CA at 22:29 UTC on October 1, 2020. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 8 hours earlier. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:20:52 UTC | 2.7ml | 93 km ESE of King Salmon, Alaska 58.475°, -155.115° | 122.7 km | - | - | - | ✓ Reviewed | USGS → |
At 22:20 UTC on October 1, 2020, a magnitude 2.7 tremor occurred 93 km ESE of King Salmon, Alaska. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:18:25 UTC | 2.3ml | 4km ESE of Westmorland, CA 33.021°, -115.584° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 4km ESE of Westmorland, CA on October 1, 2020, with origin time 22:18 UTC. It arrived roughly 8 hours after a larger magnitude 3.6 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. | ||||||||
2020-10-01 2020-10-01 22:04:04 UTC | 4.8mb | 197 km NE of Angoram, Papua New Guinea -2.942°, 145.450° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:04 UTC on October 1, 2020, a magnitude 4.8 tremor occurred 197 km NE of Angoram, Papua New Guinea. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 22:02:48 UTC | 4.5mb | South Shetland Islands -62.310°, -58.045° | 1.7 km | - | - | - | ✓ Reviewed | USGS → |
At 22:02 UTC on October 1, 2020, a magnitude 4.5 tremor occurred near South Shetland Islands. Coming 1 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 21:58:24 UTC | 2.4md | 7 km ESE of La Parguera, Puerto Rico 17.940°, -66.990° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.4 earthquake 7 km ESE of La Parguera, Puerto Rico with origin time 21:58 UTC on October 1, 2020. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 2 hours earlier. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 21:57:08 UTC | 2.7md | 4 km W of P?hala, Hawaii 19.200°, -155.524° | 35.0 km | 6 | - | - | ✓ Reviewed | USGS → |
On October 1, 2020, worldwide seismic activity registered a magnitude 2.7 earthquake 4 km W of P?hala, Hawaii at 21:57 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 21:51:26 UTC | 2.2ml | 4km ENE of Westmorland, CA 33.053°, -115.581° | 5.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 4km ENE of Westmorland, CA on October 1, 2020 at 21:51 UTC. It arrived roughly 7 hours after a larger magnitude 3.6 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. | ||||||||
2020-10-01 2020-10-01 21:50:46 UTC | 4.6mb | South Shetland Islands -62.283°, -58.199° | 1.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place near South Shetland Islands on October 1, 2020 at 21:50 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 21:43:36 UTC | 2.1ml | 7km WSW of Calipatria, CA 33.095°, -115.579° | 7.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 7km WSW of Calipatria, CA came in on October 1, 2020 at 21:43 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 7 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 21:43:12 UTC | 2.1ml | 6km WSW of Calipatria, CA 33.104°, -115.574° | 9.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 6km WSW of Calipatria, CA on October 1, 2020 at 21:43 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 7 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 21:43:02 UTC | 2.2ml | 7km NNE of Westmorland, CA 33.098°, -115.588° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 7km NNE of Westmorland, CA at 21:43 UTC on October 1, 2020. It arrived roughly 7 hours after a larger magnitude 3.6 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. | ||||||||
2020-10-01 2020-10-01 21:42:37 UTC | 3.0ml | 8km NNE of Westmorland, CA 33.103°, -115.598° | 5.8 km | 3 | - | - | ✓ Reviewed | USGS → |
On October 1, 2020, worldwide seismic activity registered a magnitude 3.0 earthquake 8km NNE of Westmorland, CA at 21:42 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.6 earthquake that occurred about 7 hours earlier. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-01 2020-10-01 21:42:24 UTC | 2.5ml | 8km NNE of Westmorland, CA 33.105°, -115.597° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 8km NNE of Westmorland, CA on October 1, 2020, with origin time 21:42 UTC. It arrived roughly 7 hours after a larger magnitude 3.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 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 1, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.