Earthquakes on August 18, 2020
340
EARTHQUAKES on August 18, 2020
24-hour UTC period · USGS data
26 km deep · 8 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
35
M3.0–3.9
9
M2.0–2.9
71
M1.0–1.9
219
Activity Summary
340
Total earthquakes
~250
Daily average
Elevated
Activity level
6
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.9
122 km WSW of Bengkulu, Indonesia
22:29 UTC · 26.0 km deep
Felt by 8
6.8
138 km WSW of Bengkulu, Indonesia
22:23 UTC · 22.0 km deep
Felt by 10
6.6
13 km E of San Pedro, Philippines
00:03 UTC · 10.0 km deep
Felt by 128
5.8
Southwest Indian Ridge
04:40 UTC · 10.0 km deep
5.1
125 km SE of Perryville, Alaska
18:28 UTC · 14.3 km deep
5.0
161 km WSW of Bengkulu, Indonesia
22:39 UTC · 15.2 km deep
4.9
135 km NW of Malango, Solomon Islands
18:36 UTC · 10.3 km deep
4.8
19 km ENE of Limbuhan, Philippines
21:50 UTC · 10.0 km deep
Earthquake Map — August 18, 2020
All Earthquakes — August 18, 2020
Showing 30 of 121 (filtered from 340)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2020-08-18 2020-08-18 23:35:09 UTC | 2.1ml | 5km NW of Boron, CA 35.035°, -117.681° | -0.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 5km NW of Boron, CA on August 18, 2020, with origin time 23:35 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. | ||||||||
2020-08-18 2020-08-18 23:30:24 UTC | 2.1ml | 27 km SSE of Mina, Nevada 38.175°, -117.958° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 18, 2020 at 23:30 UTC, a magnitude 2.1 earthquake struck 27 km SSE of Mina, Nevada. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 5 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 23:27:25 UTC | 2.6ml | 7 km E of Challis, Idaho 44.508°, -114.139° | 13.2 km | - | - | - | ✓ Reviewed | USGS → |
On August 18, 2020 at 23:27 UTC, a magnitude 2.6 earthquake struck 7 km E of Challis, Idaho. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 23:19:09 UTC | 4.2mb | 169 km WSW of Bengkulu, Indonesia -4.457°, 100.885° | 15.2 km | - | - | - | ✓ Reviewed | USGS → |
On August 18, 2020, worldwide seismic activity registered a magnitude 4.2 earthquake 169 km WSW of Bengkulu, Indonesia at 23:19 UTC. It arrived roughly 1 hours after a larger magnitude 5.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 23:15:35 UTC | 4.1mb | 201 km WSW of Bengkulu, Indonesia -4.786°, 100.738° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.1 event was detected 201 km WSW of Bengkulu, Indonesia on August 18, 2020, with origin time 23:15 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 23:15:16 UTC | 2.8ml | 35 km NW of Stanley, Idaho 44.460°, -115.235° | 10.0 km | 3 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 35 km NW of Stanley, Idaho with origin time 23:15 UTC on August 18, 2020. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 23:07:33 UTC | 4.2mb | 35 km S of La Esperanza (El Zapotal), Mexico 15.129°, -93.183° | 54.7 km | - | - | - | ✓ Reviewed | USGS → |
At 23:07 UTC on August 18, 2020, a magnitude 4.2 tremor occurred 35 km S of La Esperanza (El Zapotal), Mexico. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 22:57:09 UTC | 4.1mb | 153 km WSW of Bengkulu, Indonesia -4.340°, 100.991° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.1 earthquake 153 km WSW of Bengkulu, Indonesia came in on August 18, 2020 at 22:57 UTC. This event falls inside the aftershock decay of a nearby magnitude 6.8 earthquake that occurred about 1 hours earlier. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 22:39:08 UTC | 5.0mb | 161 km WSW of Bengkulu, Indonesia -4.456°, 100.963° | 15.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.0 earthquake 161 km WSW of Bengkulu, Indonesia at 22:39 UTC on August 18, 2020. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 22:34:28 UTC | 2.1ml | 8km ENE of Coso Junction, CA 36.073°, -117.870° | 2.5 km | - | - | - | ✓ Reviewed | USGS → |
August 18, 2020 brought a magnitude 2.1 earthquake 8km ENE of Coso Junction, CA, logged at 22:34 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. | ||||||||
2020-08-18 2020-08-18 22:29:24 UTC | 6.9mww | 122 km WSW of Bengkulu, Indonesia -4.207°, 101.241° | 26.0 km | 8 | IV | green | ✓ Reviewed | USGS → |
On August 18, 2020 at 22:29 UTC, a magnitude 6.9 earthquake struck 122 km WSW of Bengkulu, Indonesia. 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 18, 2020. See the M6.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 22:23:59 UTC | 6.8mww | 138 km WSW of Bengkulu, Indonesia -4.322°, 101.135° | 22.0 km | 10 | IV | green | ✓ Reviewed | USGS → |
A magnitude 6.8 earthquake was recorded 138 km WSW of Bengkulu, Indonesia on August 18, 2020 at 22:23 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M6.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 21:57:50 UTC | 4.6mb | 15 km SE of Limbuhan, Philippines 11.769°, 124.133° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 18, 2020, worldwide seismic activity registered a magnitude 4.6 earthquake 15 km SE of Limbuhan, Philippines at 21:57 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 21:57:44 UTC | 4.7mb | Fiji region -21.336°, -179.258° | 601.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 18, 2020 at 21:57 UTC, a magnitude 4.7 earthquake struck in the Fiji region. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 21:57:28 UTC | 2.3ml | 4 km WNW of Minco, Oklahoma 35.330°, -97.990° | 6.9 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 4 km WNW of Minco, Oklahoma at 21:57 UTC on August 18, 2020. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 21:50:45 UTC | 4.8mb | 19 km ENE of Limbuhan, Philippines 11.957°, 124.209° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.8 earthquake 19 km ENE of Limbuhan, Philippines came in on August 18, 2020 at 21:50 UTC. This event falls inside the aftershock decay of a nearby magnitude 6.6 earthquake that occurred about 22 hours earlier. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 21:08:32 UTC | 2.6ml | 54 km NW of Toyah, Texas 31.654°, -104.212° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 54 km NW of Toyah, Texas on August 18, 2020 at 21:08 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 20:55:43 UTC | 2.1ml | 5 km ENE of P?hala, Hawaii 19.215°, -155.429° | 30.8 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.1 earthquake 5 km ENE of P?hala, Hawaii came in on August 18, 2020 at 20:55 UTC. Coming 2 hours after a magnitude 2.3 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. | ||||||||
2020-08-18 2020-08-18 20:55:33 UTC | 2.1ml | 9km NE of Indio, CA 33.769°, -116.135° | 5.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 9km NE of Indio, CA on August 18, 2020 at 20:55 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 20:55:09 UTC | 2.2ml | 66 km SE of Perryville, Alaska 55.564°, -158.290° | 28.5 km | - | - | - | ✓ Reviewed | USGS → |
On August 18, 2020, worldwide seismic activity registered a magnitude 2.2 earthquake 66 km SE of Perryville, Alaska at 20:55 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 20:51:23 UTC | 4.7mb | Revilla Gigedo Islands region 19.362°, -108.642° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 earthquake was recorded in the Revilla Gigedo Islands region on August 18, 2020 at 20:51 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 20:05:59 UTC | 2.0ml | 219 km SW of Yakutat, Alaska 58.290°, -142.654° | 10.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 18, 2020, worldwide seismic activity registered a magnitude 2.0 earthquake 219 km SW of Yakutat, Alaska at 20:05 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 19:06:14 UTC | 4.6mb | Tonga region -23.894°, -175.940° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 19:06 UTC on August 18, 2020, a magnitude 4.6 tremor occurred in the Tonga region. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 18:59:46 UTC | 2.3ml | 3 km S of P?hala, Hawaii 19.171°, -155.480° | 34.0 km | - | - | - | Auto | USGS → |
August 18, 2020 brought a magnitude 2.3 earthquake 3 km S of P?hala, Hawaii, logged at 18:59 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 18:59:21 UTC | 2.5ml | 136 km SE of Perryville, Alaska 54.950°, -157.804° | 7.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 136 km SE of Perryville, Alaska on August 18, 2020 at 18:59 UTC. Coming 1 hours after a magnitude 5.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 18:45:00 UTC | 2.0ml | 64 km SE of Perryville, Alaska 55.463°, -158.501° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
At 18:45 UTC on August 18, 2020, a magnitude 2.0 tremor occurred 64 km SE of Perryville, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 18:36:25 UTC | 4.9mww | 135 km NW of Malango, Solomon Islands -9.011°, 158.700° | 10.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.9 event was detected 135 km NW of Malango, Solomon Islands on August 18, 2020, with origin time 18:36 UTC. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 18:32:14 UTC | 4.3mb | 237 km S of ‘Ohonua, Tonga -23.468°, -174.715° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 237 km S of ‘Ohonua, Tonga on August 18, 2020, with origin time 18:32 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 18:28:33 UTC | 5.1mww | 125 km SE of Perryville, Alaska 55.020°, -157.939° | 14.3 km | - | II | green | ✓ Reviewed | USGS → |
At 18:28 UTC on August 18, 2020, a magnitude 5.1 tremor occurred 125 km SE of Perryville, Alaska. A tsunami evaluation was automatically initiated given the magnitude and location. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2020-08-18 2020-08-18 18:20:45 UTC | 2.5ml | 27 km S of Mina, Nevada 38.140°, -118.083° | 4.9 km | - | - | - | ✓ Reviewed | USGS → |
August 18, 2020 brought a magnitude 2.5 earthquake 27 km S of Mina, Nevada, logged at 18:20 UTC. In the 72 hours after this event, the USGS recorded 12 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.5 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 18, 2020. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.