Earthquakes on August 11, 2023
283
EARTHQUAKES on August 11, 2023
24-hour UTC period · USGS data
LARGEST: M5.9 — Hokkaido, Japan region
34 km deep · 5 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
1
M4.0–4.9
31
M3.0–3.9
11
M2.0–2.9
49
M1.0–1.9
191
Activity Summary
283
Total earthquakes
~250
Daily average
Normal
Activity level
1
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.9
Hokkaido, Japan region
00:14 UTC · 34.0 km deep
Felt by 5
4.9
21 km WNW of Valdivia, Colombia
17:59 UTC · 51.2 km deep
Felt by 2
4.8
59 km WSW of San Juan del Sur, Nicaragua
11:33 UTC · 51.7 km deep
4.8
Kermadec Islands, New Zealand
09:09 UTC · 35.0 km deep
4.7
south of the Fiji Islands
16:16 UTC · 97.7 km deep
4.6
Volcano Islands, Japan region
09:29 UTC · 137.1 km deep
4.6
286 km SW of Arenas, Panama
06:40 UTC · 10.0 km deep
4.6
182 km NE of Lospalos, Timor Leste
04:47 UTC · 150.4 km deep
Earthquake Map — August 11, 2023
All Earthquakes — August 11, 2023
Showing 30 of 92 (filtered from 283)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-08-11 2023-08-11 23:50:54 UTC | 3.7md | 142 km NNE of Vieques, Puerto Rico 19.610°, -65.297° | 47.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:50 UTC on August 11, 2023, a magnitude 3.7 tremor occurred 142 km NNE of Vieques, Puerto Rico. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 23:50:10 UTC | 2.9ml | 265 km S of Akhiok, Alaska 54.568°, -153.944° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:50 UTC on August 11, 2023, a magnitude 2.9 tremor occurred 265 km S of Akhiok, Alaska. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 23:49:18 UTC | 4.2mb | Fiji region -20.004°, -178.101° | 538.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake in the Fiji region at 23:49 UTC on August 11, 2023. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 23:40:20 UTC | 3.0md | 3 km WSW of La Parguera, Puerto Rico 17.961°, -67.080° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2023, worldwide seismic activity registered a magnitude 3.0 earthquake 3 km WSW of La Parguera, Puerto Rico at 23:40 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 23:17:16 UTC | 2.7md | Puerto Rico region 17.870°, -66.879° | 9.1 km | - | - | - | ✓ Reviewed | USGS → |
At 23:17 UTC on August 11, 2023, a magnitude 2.7 tremor occurred in the Puerto Rico region. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 22:58:18 UTC | 4.4mb | 94 km NW of Kandrian, Papua New Guinea -5.626°, 148.922° | 176.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 94 km NW of Kandrian, Papua New Guinea at 22:58 UTC on August 11, 2023. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 22:43:42 UTC | 2.7ml | 19 km SSE of Progreso, B.C., MX 32.428°, -115.485° | 11.1 km | - | - | - | ✓ Reviewed | USGS → |
August 11, 2023 brought a magnitude 2.7 earthquake 19 km SSE of Progreso, B.C., MX, logged at 22:43 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 22:20:06 UTC | 2.6ml | Alaska Peninsula 54.634°, -161.041° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake near Alaska Peninsula came in on August 11, 2023 at 22:20 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 21:45:46 UTC | 4.5mb | 19 km NNW of Güiria, Venezuela 10.746°, -62.339° | 85.9 km | - | - | - | ✓ Reviewed | USGS → |
August 11, 2023 brought a magnitude 4.5 earthquake 19 km NNW of Güiria, Venezuela, logged at 21:45 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 21:11:21 UTC | 2.0ml | 13 km S of Princeton, Canada 49.339°, -120.531° | -0.8 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2023 at 21:11 UTC, a magnitude 2.0 earthquake struck 13 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 21:07:21 UTC | 2.1ml | 56 km SW of Cantwell, Alaska 63.094°, -149.850° | 80.8 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2023 at 21:07 UTC, a magnitude 2.1 earthquake struck 56 km SW of Cantwell, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 20:53:36 UTC | 4.4mb | Fiji region -20.672°, -176.808° | 249.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected in the Fiji region on August 11, 2023, with origin time 20:53 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 20:39:37 UTC | 2.7ml | Rat Islands, Aleutian Islands, Alaska 51.785°, 178.403° | 97.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2023 at 20:39 UTC, a magnitude 2.7 earthquake struck near Rat Islands, Aleutian Islands, Alaska. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 20:26:12 UTC | 4.4mwr | Costa Rica 9.029°, -84.032° | 9.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake near Costa Rica came in on August 11, 2023 at 20:26 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 20:15:43 UTC | 3.4ml | 48 km ESE of Naalehu, Hawaii 18.881°, -155.165° | 42.7 km | 3 | - | - | ✓ Reviewed | USGS → |
This magnitude 3.4 event was detected 48 km ESE of Naalehu, Hawaii on August 11, 2023, with origin time 20:15 UTC. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 19:48:21 UTC | 2.6ml | 28 km WNW of Nikiski, Alaska 60.809°, -151.762° | 78.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 28 km WNW of Nikiski, Alaska on August 11, 2023 at 19:48 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 19:41:06 UTC | 2.1ml | 37 km ESE of Atka, Alaska 52.079°, -173.687° | 9.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 37 km ESE of Atka, Alaska on August 11, 2023 at 19:41 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 19:06:03 UTC | 4.4mb | 84 km SE of Pondaguitan, Philippines 5.897°, 126.785° | 118.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 84 km SE of Pondaguitan, Philippines on August 11, 2023 at 19:06 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 17:59:59 UTC | 4.9mwr | 21 km WNW of Valdivia, Colombia 7.353°, -75.575° | 51.2 km | 2 | - | - | ✓ Reviewed | USGS → |
A magnitude 4.9 earthquake was recorded 21 km WNW of Valdivia, Colombia on August 11, 2023 at 17:59 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 17:22:24 UTC | 4.5mb | 26 km SE of Ikungi, Tanzania -5.332°, 34.906° | 13.8 km | - | - | - | ✓ Reviewed | USGS → |
On August 11, 2023 at 17:22 UTC, a magnitude 4.5 earthquake struck 26 km SE of Ikungi, Tanzania. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 16:24:02 UTC | 3.3ml | Turkey-Syria border region 36.813°, 36.809° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.3 earthquake in the Turkey-Syria border region came in on August 11, 2023 at 16:24 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 16:16:25 UTC | 4.7mb | south of the Fiji Islands -25.269°, -177.012° | 97.7 km | - | - | - | ✓ Reviewed | USGS → |
At 16:16 UTC on August 11, 2023, a magnitude 4.7 tremor occurred south of the Fiji Islands. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 16:11:33 UTC | 2.8ml | 22 km WNW of Atka, Alaska 52.285°, -174.502° | 173.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 22 km WNW of Atka, Alaska on August 11, 2023, with origin time 16:11 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 15:40:36 UTC | 2.3ml | 244 km WSW of Adak, Alaska 51.119°, -179.945° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
At 15:40 UTC on August 11, 2023, a magnitude 2.3 tremor occurred 244 km WSW of Adak, Alaska. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 15:37:14 UTC | 2.9ml | south of the Aleutian Islands 52.256°, -165.815° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake south of the Aleutian Islands at 15:37 UTC on August 11, 2023. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 15:36:23 UTC | 4.5mwr | 114 km W of Abra Pampa, Argentina -22.781°, -66.810° | 198.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 114 km W of Abra Pampa, Argentina on August 11, 2023 at 15:36 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 15:35:42 UTC | 2.6md | 2 km WNW of Tallaboa, Puerto Rico 18.008°, -66.740° | 13.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 2 km WNW of Tallaboa, Puerto Rico on August 11, 2023, with origin time 15:35 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 15:35:42 UTC | 2.0ml | 55 km S of Whites City, New Mexico 31.676°, -104.406° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 55 km S of Whites City, New Mexico on August 11, 2023 at 15:35 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 15:18:50 UTC | 4.4mb | 31 km NE of Newcastle, Saint Kitts and Nevis 17.431°, -62.405° | 102.3 km | - | - | - | ✓ Reviewed | USGS → |
August 11, 2023 brought a magnitude 4.4 earthquake 31 km NE of Newcastle, Saint Kitts and Nevis, logged at 15:18 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-11 2023-08-11 15:13:51 UTC | 2.4ml | 37 km WSW of Skwentna, Alaska 61.805°, -151.992° | 107.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 seismic event took place 37 km WSW of Skwentna, Alaska on August 11, 2023 at 15:13 UTC. 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, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.