Earthquakes on August 13, 2023
268
EARTHQUAKES on August 13, 2023
24-hour UTC period · USGS data
20 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
33
M3.0–3.9
12
M2.0–2.9
64
M1.0–1.9
156
Activity Summary
268
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.7
89 km WSW of Kandrian, Papua New Guinea
04:09 UTC · 19.8 km deep
5.4
41 km W of Basco, Philippines
01:43 UTC · 50.1 km deep
Felt by 4
5.1
16 km ENE of Palaióchora, Greece
07:49 UTC · 10.0 km deep
Felt by 79
4.8
east of the South Sandwich Islands
19:59 UTC · 10.0 km deep
4.8
6 km W of Asunción Mita, Guatemala
06:22 UTC · 236.9 km deep
4.8
west of Macquarie Island
01:10 UTC · 10.0 km deep
4.7
Taiwan region
12:06 UTC · 10.0 km deep
4.6
South Sandwich Islands region
13:37 UTC · 55.8 km deep
Earthquake Map — August 13, 2023
All Earthquakes — August 13, 2023
Showing 30 of 112 (filtered from 268)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-08-13 2023-08-13 23:51:15 UTC | 3.1ml | 291 km W of Adak, Alaska 51.729°, 179.149° | 86.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake 291 km W of Adak, Alaska with origin time 23:51 UTC on August 13, 2023. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 23:36:28 UTC | 4.3ml | 6 km WNW of Volcano, Hawaii 19.473°, -155.284° | 25.0 km | 459 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected 6 km WNW of Volcano, Hawaii on August 13, 2023, with origin time 23:36 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 23:23:12 UTC | 2.1ml | 51 km E of Port Alsworth, Alaska 60.136°, -153.395° | 146.3 km | - | - | - | ✓ Reviewed | USGS → |
At 23:23 UTC on August 13, 2023, a magnitude 2.1 tremor occurred 51 km E of Port Alsworth, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 23:01:21 UTC | 2.2ml | 8 km N of Delano, CA 35.836°, -119.259° | 22.1 km | - | - | - | ✓ Reviewed | USGS → |
On August 13, 2023 at 23:01 UTC, a magnitude 2.2 earthquake struck 8 km N of Delano, CA. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 22:47:41 UTC | 2.6ml | 7 km SW of Volcano, Hawaii 19.387°, -155.276° | 1.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 7 km SW of Volcano, Hawaii on August 13, 2023 at 22:47 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 9 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 22:38:36 UTC | 4.0mb | 227 km E of Levuka, Fiji -17.764°, -178.563° | 556.7 km | - | - | - | ✓ Reviewed | USGS → |
At 22:38 UTC on August 13, 2023, a magnitude 4.0 tremor occurred 227 km E of Levuka, Fiji. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 22:36:39 UTC | 2.4ml | 115 km S of False Pass, Alaska 53.835°, -163.097° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.4 event was detected 115 km S of False Pass, Alaska on August 13, 2023, with origin time 22:36 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 22:12:21 UTC | 2.1ml | 9 km E of Meeker, Oklahoma 35.509°, -96.802° | 2.6 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.1 earthquake 9 km E of Meeker, Oklahoma at 22:12 UTC on August 13, 2023. 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. | ||||||||
2023-08-13 2023-08-13 22:09:46 UTC | 2.3ml | 55 km S of Whites City, New Mexico 31.677°, -104.407° | 5.6 km | - | - | - | ✓ Reviewed | USGS → |
August 13, 2023 brought a magnitude 2.3 earthquake 55 km S of Whites City, New Mexico, logged at 22:09 UTC. It arrived roughly 20 hours after a larger magnitude 3.3 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 22:08:42 UTC | 2.0ml | 54 km S of Whites City, New Mexico 31.683°, -104.398° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 54 km S of Whites City, New Mexico on August 13, 2023 at 22:08 UTC. Coming 20 hours after a magnitude 3.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 22:06:39 UTC | 3.2ml | 67 km SSE of Atka, Alaska 51.640°, -173.802° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 13, 2023 brought a magnitude 3.2 earthquake 67 km SSE of Atka, Alaska, logged at 22:06 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 21:38:17 UTC | 4.2mb | 57 km W of Sola, Vanuatu -13.917°, 167.020° | 136.9 km | - | - | - | ✓ Reviewed | USGS → |
At 21:38 UTC on August 13, 2023, a magnitude 4.2 tremor occurred 57 km W of Sola, Vanuatu. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 21:18:59 UTC | 2.9ml | 24 km SSE of Wright, Wyoming 43.535°, -105.413° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 seismic event took place 24 km SSE of Wright, Wyoming on August 13, 2023 at 21:18 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. | ||||||||
2023-08-13 2023-08-13 21:09:02 UTC | 2.1md | 9 km NNW of Redwood Valley, CA 39.339°, -123.243° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 9 km NNW of Redwood Valley, CA with origin time 21:09 UTC on August 13, 2023. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 14 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 21:08:46 UTC | 4.2mb | 24 km SSW of Coquimbo, Chile -30.161°, -71.431° | 53.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake 24 km SSW of Coquimbo, Chile at 21:08 UTC on August 13, 2023. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 20:29:30 UTC | 2.5ml | 19 km WSW of Nenana, Alaska 64.479°, -149.441° | 15.4 km | - | - | - | ✓ Reviewed | USGS → |
August 13, 2023 brought a magnitude 2.5 earthquake 19 km WSW of Nenana, Alaska, logged at 20:29 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 20:29:06 UTC | 4.4mb | 26 km SW of Sandgerði, Iceland 63.865°, -23.072° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 26 km SW of Sandgerði, Iceland with origin time 20:29 UTC on August 13, 2023. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 20:13:08 UTC | 4.2mb | 29 km SSE of Ikungi, Tanzania -5.392°, 34.837° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 29 km SSE of Ikungi, Tanzania on August 13, 2023, with origin time 20:13 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 20:04:33 UTC | 2.2ml | 4 km NW of Aguanga, CA 33.466°, -116.893° | 12.6 km | - | - | - | ✓ Reviewed | USGS → |
August 13, 2023 brought a magnitude 2.2 earthquake 4 km NW of Aguanga, CA, logged at 20:04 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 19:59:45 UTC | 4.8mb | east of the South Sandwich Islands -60.545°, -19.203° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 13, 2023, worldwide seismic activity registered a magnitude 4.8 earthquake east of the South Sandwich Islands at 19:59 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 19:40:37 UTC | 2.5ml | 140 km SE of Akutan, Alaska 53.319°, -164.151° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 13, 2023 at 19:40 UTC, a magnitude 2.5 earthquake struck 140 km SE of Akutan, Alaska. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 19:37:07 UTC | 2.5ml | 66 km S of Unalaska, Alaska 53.286°, -166.389° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 66 km S of Unalaska, Alaska on August 13, 2023 at 19:37 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 19:34:29 UTC | 2.8ml | 79 km WNW of False Pass, Alaska 55.239°, -164.452° | 195.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 13, 2023 at 19:34 UTC, a magnitude 2.8 earthquake struck 79 km WNW of False Pass, Alaska. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 19:33:48 UTC | 2.7ml | Rat Islands, Aleutian Islands, Alaska 50.286°, 179.618° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
At 19:33 UTC on August 13, 2023, a magnitude 2.7 tremor occurred near Rat Islands, Aleutian Islands, Alaska. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 19:17:44 UTC | 2.0ml | 61 km ESE of Atka, Alaska 51.904°, -173.438° | 42.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 61 km ESE of Atka, Alaska with origin time 19:17 UTC on August 13, 2023. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 19:10:04 UTC | 2.2ml | 21 km S of Ucluelet, Canada 48.744°, -125.546° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 21 km S of Ucluelet, Canada at 19:10 UTC on August 13, 2023. 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. | ||||||||
2023-08-13 2023-08-13 19:06:20 UTC | 4.2mb | 33 km NNW of Sepatan, Indonesia -5.837°, 106.475° | 218.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 33 km NNW of Sepatan, Indonesia came in on August 13, 2023 at 19:06 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-13 2023-08-13 19:06:07 UTC | 2.0ml | Alaska Peninsula 54.404°, -160.692° | 3.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 13, 2023, worldwide seismic activity registered a magnitude 2.0 earthquake near Alaska Peninsula at 19:06 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. | ||||||||
2023-08-13 2023-08-13 19:05:16 UTC | 4.3mb | 168 km SSW of Malisbeng, Philippines 4.827°, 123.556° | 512.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 168 km SSW of Malisbeng, Philippines came in on August 13, 2023 at 19:05 UTC. 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. | ||||||||
2023-08-13 2023-08-13 18:42:16 UTC | 2.1ml | 41 km E of Pedro Bay, Alaska 59.778°, -153.359° | 130.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 41 km E of Pedro Bay, Alaska on August 13, 2023, with origin time 18:42 UTC. The event was offshore. See the M2.1 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 13, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.