Earthquakes on August 9, 2020
340
EARTHQUAKES on August 9, 2020
24-hour UTC period · USGS data
LARGEST: M5.7 — southwest of Africa
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
7
M4.0–4.9
33
M3.0–3.9
22
M2.0–2.9
63
M1.0–1.9
215
Activity Summary
340
Total earthquakes
~250
Daily average
Elevated
Activity level
7
M5.0+ events
Significant Earthquakes (M4.5+)
5.7
southwest of Africa
23:42 UTC · 10.0 km deep
5.5
central Mid-Atlantic Ridge
12:42 UTC · 10.0 km deep
Felt by 97
5.3
Prince Edward Islands region
16:30 UTC · 10.0 km deep
5.1
122 km SE of Perryville, Alaska
14:57 UTC · 22.1 km deep
5.1
4 km SE of Sparta, North Carolina
12:07 UTC · 4.1 km deep
Felt by 66,721
5.0
36 km SW of Sarpol-e Z?ah?b, Iran
09:16 UTC · 10.0 km deep
Felt by 2
5.0
135 km SSE of Dompu, Indonesia
04:52 UTC · 10.0 km deep
4.9
219 km NNE of Shi Yomi, India
17:13 UTC · 10.0 km deep
Earthquake Map — August 9, 2020
All Earthquakes — August 9, 2020
Showing 30 of 125 (filtered from 340)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-08-09 2020-08-09 23:59:57 UTC | 3.1ml | 59 km E of Juneau, Alaska 58.349°, -133.413° | 1.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.1 earthquake 59 km E of Juneau, Alaska came in on August 9, 2020 at 23:59 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 23:58:47 UTC | 2.1ml | 85 km SSW of Unalaska, Alaska 53.133°, -166.848° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 85 km SSW of Unalaska, Alaska on August 9, 2020, with origin time 23:58 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 23:42:59 UTC | 4.2mb | 146 km W of Waingapu, Indonesia -9.811°, 118.941° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 146 km W of Waingapu, Indonesia came in on August 9, 2020 at 23:42 UTC. It arrived roughly 19 hours after a larger magnitude 5.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 23:42:33 UTC | 5.7mww | southwest of Africa -53.017°, 11.580° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
On August 9, 2020 at 23:42 UTC, a magnitude 5.7 earthquake struck southwest of Africa. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. It is the largest earthquake currently listed for worldwide seismic activity on August 9, 2020. See the M5.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 23:18:04 UTC | 3.1md | 7 km SSE of Guánica, Puerto Rico 17.913°, -66.877° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.1 event was detected 7 km SSE of Guánica, Puerto Rico on August 9, 2020, with origin time 23:18 UTC. Coming 3 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 23:13:35 UTC | 3.5ml | Southern Alaska 60.677°, -143.006° | 9.7 km | - | IV | - | ✓ Reviewed | USGS → |
This magnitude 3.5 event was detected near Southern Alaska on August 9, 2020, with origin time 23:13 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.3 earthquake that occurred about 1 hours earlier. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 23:10:50 UTC | 4.3ml | 85 km S of McCarthy, Alaska 60.669°, -143.026° | 9.4 km | 1 | IV | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 85 km S of McCarthy, Alaska with origin time 23:10 UTC on August 9, 2020. A tsunami evaluation was automatically initiated given the magnitude and location. In the 72 hours after this event, the USGS recorded 5 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 23:05:03 UTC | 4.0mb | 48 km NW of Nuku‘alofa, Tonga -20.776°, -175.470° | 158.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.0 event was detected 48 km NW of Nuku‘alofa, Tonga on August 9, 2020, with origin time 23:05 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:57:41 UTC | 2.4md | 4 km SSW of Indios, Puerto Rico 17.960°, -66.840° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 4 km SSW of Indios, Puerto Rico at 22:57 UTC on August 9, 2020. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 3 hours earlier. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:52:22 UTC | 2.6md | 9 km SSE of Maria Antonia, Puerto Rico 17.895°, -66.855° | 16.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 9, 2020 at 22:52 UTC, a magnitude 2.6 earthquake struck 9 km SSE of Maria Antonia, Puerto Rico. Coming 3 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:46:50 UTC | 2.9ml | 87 km S of McCarthy, Alaska 60.653°, -142.936° | 8.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 9, 2020, worldwide seismic activity registered a magnitude 2.9 earthquake 87 km S of McCarthy, Alaska at 22:46 UTC. It arrived roughly 17 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 M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:46:34 UTC | 2.1ml | 84 km S of McCarthy, Alaska 60.674°, -143.024° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 84 km S of McCarthy, Alaska came in on August 9, 2020 at 22:46 UTC. Coming 17 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:40:07 UTC | 4.5mb | 48 km NNE of Severo-Kuril’sk, Russia 51.045°, 156.493° | 115.2 km | - | - | - | ✓ Reviewed | USGS → |
At 22:40 UTC on August 9, 2020, a magnitude 4.5 tremor occurred 48 km NNE of Severo-Kuril’sk, Russia. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:36:44 UTC | 4.6mb | 30 km NNE of Wewak, Papua New Guinea -3.293°, 143.742° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 9, 2020 brought a magnitude 4.6 earthquake 30 km NNE of Wewak, Papua New Guinea, logged at 22:36 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:32:38 UTC | 4.6mb | 177 km NE of Isangel, Vanuatu -18.574°, 170.625° | 233.2 km | - | - | - | ✓ Reviewed | USGS → |
On August 9, 2020 at 22:32 UTC, a magnitude 4.6 earthquake struck 177 km NE of Isangel, Vanuatu. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:31:09 UTC | 3.1md | 6 km WSW of Guánica, Puerto Rico 17.950°, -66.968° | 11.0 km | - | II | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.1 earthquake 6 km WSW of Guánica, Puerto Rico at 22:31 UTC on August 9, 2020. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 3 hours earlier. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:25:49 UTC | 2.4ml | 47 km NW of Rampart, Alaska 65.804°, -150.894° | 6.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.4 event was detected 47 km NW of Rampart, Alaska on August 9, 2020, with origin time 22:25 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:24:35 UTC | 2.5md | 11 km SSE of Maria Antonia, Puerto Rico 17.883°, -66.852° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 11 km SSE of Maria Antonia, Puerto Rico on August 9, 2020 at 22:24 UTC. It arrived roughly 3 hours after a larger magnitude 3.4 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. | ||||||||
2020-08-09 2020-08-09 22:12:21 UTC | 4.6mb | 152 km S of Bambanglipuro, Indonesia -9.325°, 110.246° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded 152 km S of Bambanglipuro, Indonesia on August 9, 2020 at 22:12 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:09:14 UTC | 2.8md | 11 km SSE of Maria Antonia, Puerto Rico 17.878°, -66.850° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 seismic event took place 11 km SSE of Maria Antonia, Puerto Rico on August 9, 2020 at 22:09 UTC. Coming 2 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 22:08:52 UTC | 2.3md | 6km NW of The Geysers, CA 38.825°, -122.799° | 3.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 seismic event took place 6km NW of The Geysers, CA on August 9, 2020 at 22:08 UTC. 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. | ||||||||
2020-08-09 2020-08-09 22:07:31 UTC | 2.0ml | 56 km E of Juneau, Alaska 58.316°, -133.450° | 0.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 56 km E of Juneau, Alaska at 22:07 UTC on August 9, 2020. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 2 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. | ||||||||
2020-08-09 2020-08-09 21:31:13 UTC | 4.6mb | 136 km SSW of Komodo, Indonesia -9.729°, 119.017° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.6 earthquake 136 km SSW of Komodo, Indonesia with origin time 21:31 UTC on August 9, 2020. It arrived roughly 17 hours after a larger magnitude 5.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 21:03:23 UTC | 2.1ml | 12km SSE of Bombay Beach, CA 33.249°, -115.693° | 2.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 9, 2020, worldwide seismic activity registered a magnitude 2.1 earthquake 12km SSE of Bombay Beach, CA at 21:03 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. | ||||||||
2020-08-09 2020-08-09 20:52:55 UTC | 2.1ml | 86 km S of McCarthy, Alaska 60.654°, -143.009° | 5.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 86 km S of McCarthy, Alaska on August 9, 2020 at 20:52 UTC. It arrived roughly 16 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 20:48:13 UTC | 3.7mb | 81 km SSW of Sand Point, Alaska 54.706°, -161.153° | 20.5 km | 1 | - | - | ✓ Reviewed | USGS → |
On August 9, 2020, worldwide seismic activity registered a magnitude 3.7 earthquake 81 km SSW of Sand Point, Alaska at 20:48 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.2 earthquake that occurred about 19 hours earlier. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 20:40:28 UTC | 4.6mb | off the coast of Central America 2.730°, -84.450° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 9, 2020, worldwide seismic activity registered a magnitude 4.6 earthquake near off the coast of Central America at 20:40 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 20:39:22 UTC | 2.8md | 10 km SSE of Maria Antonia, Puerto Rico 17.890°, -66.852° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 10 km SSE of Maria Antonia, Puerto Rico with origin time 20:39 UTC on August 9, 2020. It arrived roughly 1 hours after a larger magnitude 3.4 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 20:13:29 UTC | 3.1ml | 56 km E of Juneau, Alaska 58.342°, -133.462° | 2.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 seismic event took place 56 km E of Juneau, Alaska on August 9, 2020 at 20:13 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-09 2020-08-09 19:57:06 UTC | 2.7md | 10 km SSE of Maria Antonia, Puerto Rico 17.887°, -66.853° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
At 19:57 UTC on August 9, 2020, a magnitude 2.7 tremor occurred 10 km SSE of Maria Antonia, Puerto Rico. Coming 1 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.7 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 9, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.