Earthquakes on August 20, 2020
388
EARTHQUAKES on August 20, 2020
24-hour UTC period · USGS data
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
26
M3.0–3.9
17
M2.0–2.9
83
M1.0–1.9
259
Activity Summary
388
Total earthquakes
~250
Daily average
Elevated
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
5.3
132 km WNW of Pizarro, Colombia
01:16 UTC · 10.0 km deep
5.1
177 km WSW of Kavieng, Papua New Guinea
03:00 UTC · 20.0 km deep
5.0
82 km SSE of False Pass, Alaska
16:35 UTC · 52.9 km deep
Felt by 5
4.9
South Sandwich Islands region
21:23 UTC · 64.3 km deep
4.7
South Sandwich Islands region
21:45 UTC · 10.0 km deep
4.7
northern Mid-Atlantic Ridge
17:18 UTC · 10.0 km deep
4.6
66 km SSW of Nemuro, Japan
19:51 UTC · 27.5 km deep
4.6
Tristan da Cunha region
17:08 UTC · 10.0 km deep
Earthquake Map — August 20, 2020
All Earthquakes — August 20, 2020
Showing 30 of 129 (filtered from 388)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-08-20 2020-08-20 23:45:54 UTC | 4.5mb | 287 km W of Weno, Micronesia 7.315°, 149.238° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 287 km W of Weno, Micronesia on August 20, 2020 at 23:45 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 23:39:34 UTC | 2.1ml | 103 km S of False Pass, Alaska 53.927°, -163.271° | 35.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 103 km S of False Pass, Alaska at 23:39 UTC on August 20, 2020. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 23:37:15 UTC | 2.3ml | 13 km WNW of Stanley, Idaho 44.271°, -115.092° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 13 km WNW of Stanley, Idaho at 23:37 UTC on August 20, 2020. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 10 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 22:56:36 UTC | 2.9ml | 11km NNW of Santa Paula, CA 34.441°, -119.106° | 7.2 km | 12 | - | - | ✓ Reviewed | USGS → |
August 20, 2020 brought a magnitude 2.9 earthquake 11km NNW of Santa Paula, CA, logged at 22:56 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 22:52:58 UTC | 2.4ml | 57 km NNE of Kobuk, Alaska 67.358°, -156.217° | 14.2 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2020 brought a magnitude 2.4 earthquake 57 km NNE of Kobuk, Alaska, logged at 22:52 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 22:40:59 UTC | 3.1ml | 162 km SSW of Atka, Alaska 50.802°, -174.917° | 24.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 162 km SSW of Atka, Alaska on August 20, 2020 at 22:40 UTC. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 22:40:45 UTC | 2.6ml | 12km E of Ojai, CA 34.452°, -119.114° | 3.4 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 12km E of Ojai, CA on August 20, 2020 at 22:40 UTC. In the 72 hours after this event, the USGS recorded 4 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 22:38:43 UTC | 2.7ml | 2 km S of Ravensdale, Washington 47.332°, -121.985° | 19.5 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 2 km S of Ravensdale, Washington on August 20, 2020, 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. | ||||||||
2020-08-20 2020-08-20 22:17:29 UTC | 2.1ml | Rat Islands, Aleutian Islands, Alaska 51.390°, 177.679° | 50.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected near Rat Islands, Aleutian Islands, Alaska on August 20, 2020, with origin time 22:17 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 22:15:42 UTC | 2.5md | 2 km S of Maria Antonia, Puerto Rico 17.958°, -66.887° | 12.0 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2020 brought a magnitude 2.5 earthquake 2 km S of Maria Antonia, Puerto Rico, logged at 22:15 UTC. It arrived roughly 13 hours after a larger magnitude 3.2 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. | ||||||||
2020-08-20 2020-08-20 22:02:23 UTC | 2.0ml | 12km SSW of Bombay Beach, CA 33.253°, -115.796° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 12km SSW of Bombay Beach, CA at 22:02 UTC on August 20, 2020. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 21:56:39 UTC | 2.6md | 6 km WSW of Guánica, Puerto Rico 17.943°, -66.962° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2020, worldwide seismic activity registered a magnitude 2.6 earthquake 6 km WSW of Guánica, Puerto Rico at 21:56 UTC. It arrived roughly 13 hours after a larger magnitude 3.2 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. | ||||||||
2020-08-20 2020-08-20 21:48:21 UTC | 2.0ml | 49 km E of Nelson Lagoon, Alaska 55.927°, -160.428° | 148.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 49 km E of Nelson Lagoon, Alaska on August 20, 2020 at 21:48 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 21:46:55 UTC | 2.3md | 1 km E of Sparta, North Carolina 36.504°, -81.105° | 3.0 km | 37 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 1 km E of Sparta, North Carolina with origin time 21:46 UTC on August 20, 2020. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 21:45:10 UTC | 4.7mb | South Sandwich Islands region -60.585°, -25.364° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 21:45 UTC on August 20, 2020, 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. | ||||||||
2020-08-20 2020-08-20 21:45:02 UTC | 2.0ml | 68 km NNE of White Mountain, Alaska 65.272°, -162.999° | 1.9 km | - | - | - | ✓ Reviewed | USGS → |
August 20, 2020 brought a magnitude 2.0 earthquake 68 km NNE of White Mountain, Alaska, logged at 21:45 UTC. Coming 10 hours after a magnitude 3.6 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 21:43:22 UTC | 4.4mb | South Sandwich Islands region -56.038°, -27.084° | 43.1 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2020, worldwide seismic activity registered a magnitude 4.4 earthquake in the South Sandwich Islands region at 21:43 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 21:23:00 UTC | 4.9mb | South Sandwich Islands region -55.970°, -27.453° | 64.3 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2020, worldwide seismic activity registered a magnitude 4.9 earthquake in the South Sandwich Islands region at 21:23 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 21:15:02 UTC | 2.5ml | 10 km S of Princeton, Canada 49.362°, -120.525° | -0.4 km | - | - | - | ✓ Reviewed | USGS → |
At 21:15 UTC on August 20, 2020, a magnitude 2.5 tremor occurred 10 km S of Princeton, Canada. 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. | ||||||||
2020-08-20 2020-08-20 21:08:48 UTC | 2.4ml | Island of Hawaii, Hawaii 19.213°, -155.373° | 33.1 km | - | - | - | Auto | USGS → |
On August 20, 2020 at 21:08 UTC, a magnitude 2.4 earthquake struck near Island of Hawaii, Hawaii. Coming 7 hours after a magnitude 2.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 21:06:29 UTC | 2.0ml | 55 km WNW of Adak, Alaska 52.034°, -177.392° | 156.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2020 at 21:06 UTC, a magnitude 2.0 earthquake struck 55 km WNW of Adak, Alaska. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 20:50:26 UTC | 2.0ml | 66 km SE of Sand Point, Alaska 54.900°, -159.796° | 36.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 66 km SE of Sand Point, Alaska on August 20, 2020 at 20:50 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 4 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 20:43:20 UTC | 3.0ml | 156 km SE of Old Harbor, Alaska 56.236°, -151.446° | 14.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake 156 km SE of Old Harbor, Alaska at 20:43 UTC on August 20, 2020. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 20:35:28 UTC | 2.1ml | northern Alaska 67.363°, -156.224° | 14.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake near northern Alaska came in on August 20, 2020 at 20:35 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 19:51:39 UTC | 4.6mb | 66 km SSW of Nemuro, Japan 42.743°, 145.393° | 27.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected 66 km SSW of Nemuro, Japan on August 20, 2020, with origin time 19:51 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 19:47:26 UTC | 4.3mb | 89 km S of Padang, Indonesia -1.752°, 100.272° | 49.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 89 km S of Padang, Indonesia came in on August 20, 2020 at 19:47 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 19:32:03 UTC | 2.2ml | 36km WSW of Stovepipe Wells, CA 36.467°, -117.508° | -1.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 36km WSW of Stovepipe Wells, CA on August 20, 2020 at 19:32 UTC. Coming 16 hours after a magnitude 2.3 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 19:18:40 UTC | 2.9ml | 56 km E of Juneau, Alaska 58.333°, -133.457° | 3.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 20, 2020 at 19:18 UTC, a magnitude 2.9 earthquake struck 56 km E of Juneau, Alaska. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 19:14:48 UTC | 3.3ml | 108 km SW of Nikolski, Alaska 52.286°, -170.051° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.3 event was detected 108 km SW of Nikolski, Alaska on August 20, 2020, with origin time 19:14 UTC. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-20 2020-08-20 19:12:21 UTC | 3.4ml | 8 km ESE of Atka, Alaska 52.171°, -174.079° | 183.9 km | - | - | - | ✓ Reviewed | USGS → |
At 19:12 UTC on August 20, 2020, a magnitude 3.4 tremor occurred 8 km ESE of Atka, Alaska. See the M3.4 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 20, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.