Earthquakes on October 3, 2020
344
EARTHQUAKES on October 3, 2020
24-hour UTC period · USGS data
LARGEST: M5.8 — 193 km SSE of Katsuura, Japan
29 km deep · 4 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
28
M3.0–3.9
15
M2.0–2.9
56
M1.0–1.9
241
Activity Summary
344
Total earthquakes
~250
Daily average
Elevated
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.8
193 km SSE of Katsuura, Japan
09:31 UTC · 28.9 km deep
Felt by 4
5.4
121 km SSE of Kandrian, Papua New Guinea
16:30 UTC · 19.0 km deep
5.3
eastern Greenland
13:22 UTC · 10.0 km deep
5.1
42 km SSE of Koshima, Japan
12:26 UTC · 34.2 km deep
4.9
South Shetland Islands
18:37 UTC · 6.2 km deep
4.9
South Shetland Islands
10:43 UTC · 11.1 km deep
4.9
31 km S of Pondaguitan, Philippines
03:25 UTC · 126.8 km deep
Felt by 2
4.8
South Shetland Islands
16:26 UTC · 7.1 km deep
Earthquake Map — October 3, 2020
All Earthquakes — October 3, 2020
Showing 30 of 103 (filtered from 344)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-10-03 2020-10-03 23:26:59 UTC | 3.6mw | 4km ESE of Westmorland, CA 33.022°, -115.586° | 12.8 km | 8 | IV | - | ✓ Reviewed | USGS → |
At 23:26 UTC on October 3, 2020, a magnitude 3.6 tremor occurred 4km ESE of Westmorland, CA. 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 M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 23:24:50 UTC | 4.4mb | Chagos Archipelago region -4.136°, 70.269° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded in the Chagos Archipelago region on October 3, 2020 at 23:24 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 23:24:44 UTC | 2.0md | 11 km E of P?hala, Hawaii 19.217°, -155.366° | 32.2 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.0 earthquake 11 km E of P?hala, Hawaii at 23:24 UTC on October 3, 2020. Coming 1 hours after a magnitude 2.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 23:21:44 UTC | 2.6ml | 19 km SSW of La Parguera, Puerto Rico 17.806°, -67.091° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 19 km SSW of La Parguera, Puerto Rico came in on October 3, 2020 at 23:21 UTC. It arrived roughly 3 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 23:21:38 UTC | 3.2ml | 93 km NNW of White Mountain, Alaska 65.409°, -164.382° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.2 earthquake 93 km NNW of White Mountain, Alaska came in on October 3, 2020 at 23:21 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 23:20:25 UTC | 2.3md | 6 km ENE of P?hala, Hawaii 19.215°, -155.418° | 31.9 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.3 earthquake 6 km ENE of P?hala, Hawaii at 23:20 UTC on October 3, 2020. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 23:03:23 UTC | 4.2mb | 110 km NNE of Paciran, Indonesia -6.015°, 112.879° | 611.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 110 km NNE of Paciran, Indonesia came in on October 3, 2020 at 23:03 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 22:53:09 UTC | 4.5mb | 197 km E of Kokopo, Papua New Guinea -4.366°, 154.048° | 382.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.5 event was detected 197 km E of Kokopo, Papua New Guinea on October 3, 2020, with origin time 22:53 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 22:47:35 UTC | 2.2ml | 4km ESE of Westmorland, CA 33.019°, -115.587° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 4km ESE of Westmorland, CA came in on October 3, 2020 at 22:47 UTC. Coming 2 hours after a magnitude 2.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 22:19:29 UTC | 4.6mb | 14 km ESE of Cortes, Philippines 9.253°, 126.319° | 39.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.6 earthquake 14 km ESE of Cortes, Philippines with origin time 22:19 UTC on October 3, 2020. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 22:07:57 UTC | 4.0mb | 219 km W of Tual, Indonesia -5.943°, 130.797° | 81.7 km | - | - | - | ✓ Reviewed | USGS → |
October 3, 2020 brought a magnitude 4.0 earthquake 219 km W of Tual, Indonesia, logged at 22:07 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 21:47:35 UTC | 2.0ml | 102 km S of Perryville, Alaska 54.994°, -158.958° | 2.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 102 km S of Perryville, Alaska came in on October 3, 2020 at 21:47 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.2 earthquake that occurred about 4 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 20:29:00 UTC | 3.1md | 6 km WSW of La Parguera, Puerto Rico 17.955°, -67.108° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
On October 3, 2020 at 20:29 UTC, a magnitude 3.1 earthquake struck 6 km WSW of La Parguera, Puerto Rico. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 20:21:00 UTC | 2.9ml | 4km ESE of Westmorland, CA 33.020°, -115.587° | 11.3 km | 6 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 4km ESE of Westmorland, CA came in on October 3, 2020 at 20:21 UTC. In the 72 hours after this event, the USGS recorded 7 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 20:16:27 UTC | 3.4ml | 12km S of Searles Valley, CA 35.660°, -117.428° | 7.0 km | 13 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.4 earthquake 12km S of Searles Valley, CA at 20:16 UTC on October 3, 2020. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 20:13:07 UTC | 2.0ml | 4 km S of P?hala, Hawaii 19.163°, -155.480° | 33.7 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.0 earthquake 4 km S of P?hala, Hawaii with origin time 20:13 UTC on October 3, 2020. Coming 19 hours after a magnitude 2.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 20:04:31 UTC | 4.6mb | Fiji region -18.673°, -177.803° | 615.9 km | - | - | - | ✓ Reviewed | USGS → |
On October 3, 2020, worldwide seismic activity registered a magnitude 4.6 earthquake in the Fiji region at 20:04 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 19:06:49 UTC | 4.0mb | south of the Fiji Islands -23.616°, -179.850° | 548.5 km | - | - | - | ✓ Reviewed | USGS → |
On October 3, 2020 at 19:06 UTC, a magnitude 4.0 earthquake struck south of the Fiji Islands. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 18:59:57 UTC | 4.6mb | 115 km SSW of Lakatoro, Vanuatu -17.073°, 167.028° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 18:59 UTC on October 3, 2020, a magnitude 4.6 tremor occurred 115 km SSW of Lakatoro, Vanuatu. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 18:37:20 UTC | 4.9mb | South Shetland Islands -62.403°, -58.449° | 6.2 km | - | - | - | ✓ Reviewed | USGS → |
At 18:37 UTC on October 3, 2020, a magnitude 4.9 tremor occurred near South Shetland Islands. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 18:35:16 UTC | 2.1ml | 63 km S of Shungnak, Alaska 66.325°, -157.377° | 8.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 63 km S of Shungnak, Alaska on October 3, 2020 at 18:35 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 17:49:21 UTC | 3.1ml | 80 km SSW of Sand Point, Alaska 54.709°, -161.126° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake 80 km SSW of Sand Point, Alaska with origin time 17:49 UTC on October 3, 2020. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 17:31:56 UTC | 2.5ml | 26km ENE of Pine Valley, CA 32.939°, -116.285° | 7.7 km | 3 | - | - | ✓ Reviewed | USGS → |
At 17:31 UTC on October 3, 2020, a magnitude 2.5 tremor occurred 26km ENE of Pine Valley, CA. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 17:20:16 UTC | 2.2ml | 101 km ESE of Sand Point, Alaska 54.938°, -159.062° | 34.4 km | - | - | - | ✓ Reviewed | USGS → |
On October 3, 2020 at 17:20 UTC, a magnitude 2.2 earthquake struck 101 km ESE of Sand Point, Alaska. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 17:15:18 UTC | 4.5mb | 46 km SW of Ashk?sham, Afghanistan 36.423°, 71.132° | 110.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 46 km SW of Ashk?sham, Afghanistan came in on October 3, 2020 at 17:15 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 17:10:36 UTC | 2.2ml | 1km ESE of Westmorland, CA 33.032°, -115.610° | 8.2 km | - | - | - | ✓ Reviewed | USGS → |
October 3, 2020 brought a magnitude 2.2 earthquake 1km ESE of Westmorland, CA, logged at 17:10 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.8 earthquake that occurred about 16 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 16:58:43 UTC | 3.2ml | Fox Islands, Aleutian Islands, Alaska 53.469°, -165.678° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 seismic event took place near Fox Islands, Aleutian Islands, Alaska on October 3, 2020 at 16:58 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 16:36:34 UTC | 2.3md | 14 km SE of Caruthersville, Missouri 36.096°, -89.543° | 14.8 km | - | - | - | ✓ Reviewed | USGS → |
October 3, 2020 brought a magnitude 2.3 earthquake 14 km SE of Caruthersville, Missouri, logged at 16:36 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-10-03 2020-10-03 16:30:06 UTC | 5.4mww | 121 km SSE of Kandrian, Papua New Guinea -7.175°, 150.074° | 19.0 km | - | III | green | ✓ Reviewed | USGS → |
A magnitude 5.4 earthquake was recorded 121 km SSE of Kandrian, Papua New Guinea on October 3, 2020 at 16:30 UTC. 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. | ||||||||
2020-10-03 2020-10-03 16:26:16 UTC | 4.8mb | South Shetland Islands -62.304°, -58.326° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.8 earthquake near South Shetland Islands came in on October 3, 2020 at 16:26 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.9 earthquake that occurred about 6 hours earlier. See the M4.8 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 3, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.