Earthquakes on August 31, 2020
251
EARTHQUAKES on August 31, 2020
24-hour UTC period · USGS data
LARGEST: M6.1 — Chagos Archipelago region
10 km deep · 7 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
29
M3.0–3.9
9
M2.0–2.9
60
M1.0–1.9
149
Activity Summary
251
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
6.1
Chagos Archipelago region
17:24 UTC · 10.0 km deep
Felt by 7
5.9
Tristan da Cunha region
21:18 UTC · 10.0 km deep
5.8
Pacific-Antarctic Ridge
20:28 UTC · 10.0 km deep
5.2
40 km NE of Mohr, Iran
03:36 UTC · 10.0 km deep
Felt by 1
4.9
114 km SE of Phek, India
21:09 UTC · 123.5 km deep
Felt by 7
4.9
South Shetland Islands
02:04 UTC · 10.0 km deep
4.8
South Sandwich Islands region
23:16 UTC · 10.0 km deep
4.8
central Mid-Atlantic Ridge
09:56 UTC · 10.0 km deep
Earthquake Map — August 31, 2020
All Earthquakes — August 31, 2020
Showing 30 of 102 (filtered from 251)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-08-31 2020-08-31 23:51:58 UTC | 2.1ml | 57 km SSE of Sand Point, Alaska 54.833°, -160.314° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 57 km SSE of Sand Point, Alaska came in on August 31, 2020 at 23:51 UTC. It arrived roughly 17 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 23:21:21 UTC | 2.0ml | 20 km WNW of Stanley, Idaho 44.307°, -115.167° | 5.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 20 km WNW of Stanley, Idaho on August 31, 2020, with origin time 23:21 UTC. It arrived roughly 5 hours after a larger magnitude 2.3 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. | ||||||||
2020-08-31 2020-08-31 23:16:13 UTC | 4.8mb | South Sandwich Islands region -58.669°, -24.849° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.8 event was detected in the South Sandwich Islands region on August 31, 2020, with origin time 23:16 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 23:09:24 UTC | 3.1ml | 36 km SE of Mina, Nevada 38.172°, -117.803° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 31, 2020 at 23:09 UTC, a magnitude 3.1 earthquake struck 36 km SE of Mina, Nevada. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 23:04:15 UTC | 2.2md | 5 km WNW of P?hala, Hawaii 19.231°, -155.524° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
On August 31, 2020 at 23:04 UTC, a magnitude 2.2 earthquake struck 5 km WNW of P?hala, Hawaii. Coming 10 hours after a magnitude 2.7 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. | ||||||||
2020-08-31 2020-08-31 22:46:20 UTC | 2.3md | Puerto Rico region 17.958°, -66.965° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 31, 2020 brought a magnitude 2.3 earthquake in the Puerto Rico region, logged at 22:46 UTC. It arrived roughly 3 hours after a larger magnitude 2.6 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. | ||||||||
2020-08-31 2020-08-31 22:35:43 UTC | 2.1ml | 36 km SE of Mina, Nevada 38.175°, -117.798° | 8.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 36 km SE of Mina, Nevada on August 31, 2020 at 22:35 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 11 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 22:25:10 UTC | 2.8ml | 37 km NW of Stanley, Idaho 44.484°, -115.222° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 22:25 UTC on August 31, 2020, a magnitude 2.8 tremor occurred 37 km NW of Stanley, Idaho. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 22:20:41 UTC | 2.6ml | 12km N of Warner Springs, CA 33.391°, -116.645° | 12.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 31, 2020, worldwide seismic activity registered a magnitude 2.6 earthquake 12km N of Warner Springs, CA at 22:20 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 22:17:31 UTC | 3.2md | 7 km SSW of Capitanejo, Puerto Rico 17.954°, -66.570° | 3.0 km | 4 | - | - | ✓ Reviewed | USGS → |
This magnitude 3.2 event was detected 7 km SSW of Capitanejo, Puerto Rico on August 31, 2020, with origin time 22:17 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 22:09:31 UTC | 2.4ml | 18km S of Trona, CA 35.607°, -117.411° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 18km S of Trona, CA came in on August 31, 2020 at 22:09 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 21:42:56 UTC | 4.3mb | south of the Fiji Islands -25.849°, -178.630° | 339.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 31, 2020 at 21:42 UTC, a magnitude 4.3 earthquake struck south of the Fiji Islands. 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. | ||||||||
2020-08-31 2020-08-31 21:39:23 UTC | 4.4mb | 73 km E of Loyada, Djibouti 11.544°, 43.917° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
August 31, 2020 brought a magnitude 4.4 earthquake 73 km E of Loyada, Djibouti, logged at 21:39 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 21:37:25 UTC | 2.5md | 15km SSW of Kettleman City, CA 35.877°, -119.999° | 9.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 15km SSW of Kettleman City, CA came in on August 31, 2020 at 21:37 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 21:35:04 UTC | 2.3ml | 4 km SSE of P?hala, Hawaii 19.169°, -155.463° | 33.1 km | - | - | - | Auto | USGS → |
On August 31, 2020 at 21:35 UTC, a magnitude 2.3 earthquake struck 4 km SSE of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.7 earthquake that occurred about 9 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 21:18:02 UTC | 5.9mww | Tristan da Cunha region -35.438°, -15.614° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
A magnitude 5.9 earthquake was recorded in the Tristan da Cunha region on August 31, 2020 at 21:18 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 21:10:49 UTC | 3.2ml | 149 km SW of Adak, Alaska 51.097°, -178.397° | 30.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.2 earthquake 149 km SW of Adak, Alaska came in on August 31, 2020 at 21:10 UTC. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 21:09:33 UTC | 4.9mb | 114 km SE of Phek, India 24.879°, 95.243° | 123.5 km | 7 | - | - | ✓ Reviewed | USGS → |
At 21:09 UTC on August 31, 2020, a magnitude 4.9 tremor occurred 114 km SE of Phek, India. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 20:40:01 UTC | 2.1ml | 40km SW of Ludlow, CA 34.506°, -116.516° | 4.5 km | 2 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 40km SW of Ludlow, CA on August 31, 2020, with origin time 20:40 UTC. 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. | ||||||||
2020-08-31 2020-08-31 20:31:46 UTC | 2.4ml | 36 km SE of Mina, Nevada 38.176°, -117.797° | 8.5 km | - | - | - | ✓ Reviewed | USGS → |
On August 31, 2020 at 20:31 UTC, a magnitude 2.4 earthquake struck 36 km SE of Mina, Nevada. It arrived roughly 9 hours after a larger magnitude 2.7 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. | ||||||||
2020-08-31 2020-08-31 20:28:08 UTC | 5.8mww | Pacific-Antarctic Ridge -54.971°, -130.190° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.8 earthquake near Pacific-Antarctic Ridge with origin time 20:28 UTC on August 31, 2020. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 20:25:21 UTC | 4.5mb | 80 km SSW of Masachapa, Nicaragua 11.162°, -86.900° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake 80 km SSW of Masachapa, Nicaragua with origin time 20:25 UTC on August 31, 2020. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 19:58:36 UTC | 4.2mb | 95 km S of Néa Anatolí, Greece 34.158°, 25.526° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake 95 km S of Néa Anatolí, Greece at 19:58 UTC on August 31, 2020. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 19:55:42 UTC | 2.1ml | 30 km SE of Mina, Nevada 38.175°, -117.886° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
August 31, 2020 brought a magnitude 2.1 earthquake 30 km SE of Mina, Nevada, logged at 19:55 UTC. Coming 8 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 19:53:39 UTC | 2.6md | 4 km WSW of Fuig, Puerto Rico 17.967°, -66.953° | 12.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 4 km WSW of Fuig, Puerto Rico on August 31, 2020 at 19:53 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 19:52:27 UTC | 4.3mb | 224 km ENE of Lospalos, Timor Leste -7.815°, 128.908° | 75.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 224 km ENE of Lospalos, Timor Leste on August 31, 2020 at 19:52 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 19:20:58 UTC | 4.2mb | south of the Fiji Islands -25.261°, 179.741° | 509.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected south of the Fiji Islands on August 31, 2020, with origin time 19:20 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. | ||||||||
2020-08-31 2020-08-31 19:13:16 UTC | 4.2mb | 209 km W of Panguna, Papua New Guinea -6.061°, 153.613° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 209 km W of Panguna, Papua New Guinea came in on August 31, 2020 at 19:13 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 18:52:04 UTC | 2.8ml | 20 km WNW of Happy Valley, Alaska 60.010°, -152.068° | 79.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.8 earthquake 20 km WNW of Happy Valley, Alaska at 18:52 UTC on August 31, 2020. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-31 2020-08-31 18:49:31 UTC | 2.0ml | 47 km SE of Pedro Bay, Alaska 59.498°, -153.493° | 113.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 47 km SE of Pedro Bay, Alaska came in on August 31, 2020 at 18:49 UTC. The event was offshore. See the M2.0 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 August 31, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.