Earthquakes on August 11, 2020
447
EARTHQUAKES on August 11, 2020
24-hour UTC period · USGS data
LARGEST: M5.2 — southern Mid-Atlantic Ridge
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
29
M3.0–3.9
18
M2.0–2.9
74
M1.0–1.9
323
Activity Summary
447
Total earthquakes
~250
Daily average
Elevated
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
5.2
southern Mid-Atlantic Ridge
21:35 UTC · 10.0 km deep
5.1
Kermadec Islands region
10:53 UTC · 10.0 km deep
5.0
292 km SSW of ‘Ohonua, Tonga
23:42 UTC · 10.0 km deep
4.9
205 km N of Shi Yomi, India
18:14 UTC · 10.0 km deep
4.9
65 km NNE of Nacala, Mozambique
05:10 UTC · 10.0 km deep
Felt by 3
4.8
19 km ENE of Limbuhan, Philippines
07:26 UTC · 10.0 km deep
Felt by 3
4.6
47 km SE of Xunchang, China
05:41 UTC · 10.0 km deep
4.5
36 km SW of Yonakuni, Japan
23:07 UTC · 15.4 km deep
Earthquake Map — August 11, 2020
All Earthquakes — August 11, 2020
Showing 30 of 124 (filtered from 447)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-08-11 2020-08-11 23:45:35 UTC | 4.3mb | 186 km ESE of San Jose Village, Northern Mariana Islands 14.088°, 147.096° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 186 km ESE of San Jose Village, Northern Mariana Islands on August 11, 2020 at 23:45 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 23:42:42 UTC | 5.0mb | 292 km SSW of ‘Ohonua, Tonga -23.914°, -175.574° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake 292 km SSW of ‘Ohonua, Tonga with origin time 23:42 UTC on August 11, 2020. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 23:29:09 UTC | 4.3mb | Turkey-Iran border region 39.851°, 44.200° | 10.0 km | 26 | - | - | ✓ Reviewed | USGS → |
August 11, 2020 brought a magnitude 4.3 earthquake in the Turkey-Iran border region, logged at 23:29 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 23:26:20 UTC | 2.1md | 2 km NNW of Tallaboa, Puerto Rico 18.011°, -66.727° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:26 UTC on August 11, 2020, a magnitude 2.1 tremor occurred 2 km NNW of Tallaboa, Puerto Rico. Coming 6 hours after a magnitude 3.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 23:07:26 UTC | 4.5mb | 36 km SW of Yonakuni, Japan 24.220°, 122.754° | 15.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 36 km SW of Yonakuni, Japan came in on August 11, 2020 at 23:07 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 22:48:31 UTC | 4.1mb | 210 km NNE of Shi Yomi, India 30.388°, 94.811° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 11, 2020 brought a magnitude 4.1 earthquake 210 km NNE of Shi Yomi, India, logged at 22:48 UTC. Coming 5 hours after a magnitude 4.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 22:39:57 UTC | 2.0ml | 54 km E of Juneau, Alaska 58.334°, -133.489° | 7.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 54 km E of Juneau, Alaska came in on August 11, 2020 at 22:39 UTC. It arrived roughly 3 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 22:21:52 UTC | 3.3ml | 275 km SE of Chiniak, Alaska 56.110°, -148.690° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 seismic event took place 275 km SE of Chiniak, Alaska on August 11, 2020 at 22:21 UTC. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 22:10:39 UTC | 2.0ml | 33 km SE of Mina, Nevada 38.143°, -117.893° | 10.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 33 km SE of Mina, Nevada on August 11, 2020 at 22:10 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 22:01:58 UTC | 2.3ml | 11 km NE of Sprague, Washington 47.365°, -117.864° | -0.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 11 km NE of Sprague, Washington at 22:01 UTC on August 11, 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. | ||||||||
2020-08-11 2020-08-11 21:52:38 UTC | 3.0ml | 57km E of Maneadero, B.C., MX 31.727°, -115.963° | 12.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake 57km E of Maneadero, B.C., MX at 21:52 UTC on August 11, 2020. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 21:44:27 UTC | 3.0ml | 18 km S of Adak, Alaska 51.707°, -176.619° | 69.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.0 event was detected 18 km S of Adak, Alaska on August 11, 2020, with origin time 21:44 UTC. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 21:35:50 UTC | 5.2mw | southern Mid-Atlantic Ridge -47.016°, -12.699° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2020 at 21:35 UTC, a magnitude 5.2 earthquake struck near southern Mid-Atlantic Ridge. It is the largest earthquake currently listed for worldwide seismic activity on August 11, 2020. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 21:27:28 UTC | 4.4mb | 203 km NNE of Shi Yomi, India 30.326°, 94.792° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 203 km NNE of Shi Yomi, India at 21:27 UTC on August 11, 2020. It arrived roughly 3 hours after a larger magnitude 4.9 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 20:57:08 UTC | 4.3mb | 3 km ENE of Aratoca, Colombia 6.713°, -72.989° | 154.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2020 at 20:57 UTC, a magnitude 4.3 earthquake struck 3 km ENE of Aratoca, Colombia. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 20:45:27 UTC | 2.9md | 3 km SSE of Sparta, North Carolina 36.472°, -81.109° | 3.1 km | 181 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 3 km SSE of Sparta, North Carolina came in on August 11, 2020 at 20:45 UTC. 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. | ||||||||
2020-08-11 2020-08-11 20:30:09 UTC | 2.3ml | 26 km E of Honaunau-Napoopoo, Hawaii 19.468°, -155.609° | -3.1 km | - | - | - | ✓ Reviewed | USGS → |
August 11, 2020 brought a magnitude 2.3 earthquake 26 km E of Honaunau-Napoopoo, Hawaii, logged at 20:30 UTC. Coming 10 hours after a magnitude 2.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This is the shallowest earthquake in the current dataset — a shallow crustal event. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 20:23:17 UTC | 3.5ml | 69 km NNE of White Mountain, Alaska 65.280°, -163.009° | 4.6 km | - | III | - | ✓ Reviewed | USGS → |
This magnitude 3.5 event was detected 69 km NNE of White Mountain, Alaska on August 11, 2020, with origin time 20:23 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 M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 19:53:54 UTC | 2.6ml | 32 km S of Mina, Nevada 38.097°, -118.163° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 32 km S of Mina, Nevada on August 11, 2020, with origin time 19:53 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 19:46:14 UTC | 2.0md | 20km NE of Brooktrails, CA 39.589°, -123.245° | 2.8 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2020, worldwide seismic activity registered a magnitude 2.0 earthquake 20km NE of Brooktrails, CA at 19:46 UTC. 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. | ||||||||
2020-08-11 2020-08-11 19:45:06 UTC | 2.1ml | 8km SE of Valle Vista, CA 33.703°, -116.820° | 14.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 8km SE of Valle Vista, CA with origin time 19:45 UTC on August 11, 2020. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 19:43:25 UTC | 3.2md | 6 km WSW of Fuig, Puerto Rico 17.964°, -66.974° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.2 earthquake 6 km WSW of Fuig, Puerto Rico with origin time 19:43 UTC on August 11, 2020. It arrived roughly 2 hours after a larger magnitude 3.3 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 19:40:35 UTC | 3.0ml | 53 km E of Juneau, Alaska 58.347°, -133.508° | 5.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.0 earthquake 53 km E of Juneau, Alaska came in on August 11, 2020 at 19:40 UTC. In the 72 hours after this event, the USGS recorded 6 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 19:31:52 UTC | 2.2md | 7 km WSW of Guánica, Puerto Rico 17.945°, -66.976° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2020, worldwide seismic activity registered a magnitude 2.2 earthquake 7 km WSW of Guánica, Puerto Rico at 19:31 UTC. It arrived roughly 2 hours after a larger magnitude 3.3 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. | ||||||||
2020-08-11 2020-08-11 19:08:02 UTC | 2.1ml | 122 km S of False Pass, Alaska 53.770°, -163.746° | 22.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 122 km S of False Pass, Alaska at 19:08 UTC on August 11, 2020. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 18:56:06 UTC | 2.2md | 1 km S of Tallaboa, Puerto Rico 17.980°, -66.717° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 1 km S of Tallaboa, Puerto Rico on August 11, 2020 at 18:56 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.3 earthquake that occurred about 2 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 18:48:41 UTC | 4.3mb | 88 km SW of Kokopo, Papua New Guinea -4.884°, 151.682° | 91.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 88 km SW of Kokopo, Papua New Guinea on August 11, 2020 at 18:48 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 18:38:04 UTC | 3.8ml | 249 km S of Savoonga, Alaska 61.500°, -171.412° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2020, worldwide seismic activity registered a magnitude 3.8 earthquake 249 km S of Savoonga, Alaska at 18:38 UTC. The event was offshore. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 18:32:38 UTC | 2.2ml | 14 km WSW of Anchorage, Alaska 61.157°, -150.130° | 42.4 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 14 km WSW of Anchorage, Alaska on August 11, 2020, with origin time 18:32 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-11 2020-08-11 18:22:55 UTC | 2.4ml | 53 km E of Juneau, Alaska 58.344°, -133.503° | 1.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 53 km E of Juneau, Alaska came in on August 11, 2020 at 18:22 UTC. Coming 4 hours after a magnitude 2.9 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 M2.4 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 11, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.