Earthquakes on August 27, 2023
268
EARTHQUAKES on August 27, 2023
24-hour UTC period · USGS data
24 km deep · 39 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
2
M4.0–4.9
28
M3.0–3.9
18
M2.0–2.9
64
M1.0–1.9
156
Activity Summary
268
Total earthquakes
~250
Daily average
Normal
Activity level
2
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.7
5 km E of El Cantón de San Pablo, Colombia
21:45 UTC · 24.0 km deep
Felt by 39
5.0
174 km ESE of Iwaki, Japan
17:03 UTC · 10.0 km deep
4.8
40 km SE of Hasaki, Japan
00:56 UTC · 38.8 km deep
4.7
239 km WSW of Tual, Indonesia
21:23 UTC · 62.7 km deep
4.7
Tanzania
13:53 UTC · 10.0 km deep
4.7
South Sandwich Islands region
08:46 UTC · 30.3 km deep
4.6
166 km ESE of Iwaki, Japan
16:41 UTC · 10.0 km deep
4.6
Banda Sea
13:29 UTC · 146.4 km deep
Earthquake Map — August 27, 2023
All Earthquakes — August 27, 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 |
|---|---|---|---|---|---|---|---|---|
2023-08-27 2023-08-27 23:21:59 UTC | 3.4ml | 135 km SW of Point Hope, Alaska 67.443°, -168.903° | 25.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.4 event was detected 135 km SW of Point Hope, Alaska on August 27, 2023, with origin time 23:21 UTC. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 22:59:26 UTC | 3.6md | 3 km WSW of Guánica, Puerto Rico 17.964°, -66.944° | 8.0 km | 3 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.6 earthquake 3 km WSW of Guánica, Puerto Rico with origin time 22:59 UTC on August 27, 2023. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 22:51:10 UTC | 2.0ml | 14 km ESE of Smiley, Texas 29.212°, -97.496° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 14 km ESE of Smiley, Texas on August 27, 2023, with origin time 22:51 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 22:29:35 UTC | 2.2ml | 7 km SW of Volcano, Hawaii 19.392°, -155.278° | 1.6 km | - | - | - | ✓ Reviewed | USGS → |
August 27, 2023 brought a magnitude 2.2 earthquake 7 km SW of Volcano, Hawaii, logged at 22:29 UTC. 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. | ||||||||
2023-08-27 2023-08-27 22:15:29 UTC | 4.0md | 123 km NNE of Vieques, Puerto Rico 19.483°, -65.458° | 96.0 km | - | - | - | ✓ Reviewed | USGS → |
August 27, 2023 brought a magnitude 4.0 earthquake 123 km NNE of Vieques, Puerto Rico, logged at 22:15 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 22:06:58 UTC | 4.5mb | 152 km ENE of Kavieng, Papua New Guinea -2.038°, 152.060° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 27, 2023 at 22:06 UTC, a magnitude 4.5 earthquake struck 152 km ENE of Kavieng, Papua New Guinea. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 22:06:13 UTC | 3.6mb | 47 km ESE of Atka, Alaska 51.970°, -173.610° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.6 earthquake was recorded 47 km ESE of Atka, Alaska on August 27, 2023 at 22:06 UTC. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 22:05:30 UTC | 2.9ml | 86 km SSW of Sand Point, Alaska 54.655°, -161.137° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 seismic event took place 86 km SSW of Sand Point, Alaska on August 27, 2023 at 22:05 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 21:56:09 UTC | 4.2mb | 71 km ESE of King Cove, Alaska 54.827°, -161.286° | 57.1 km | 1 | I | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake 71 km ESE of King Cove, Alaska with origin time 21:56 UTC on August 27, 2023. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 21:53:51 UTC | 4.4mb | 151 km WNW of Tobelo, Indonesia 2.203°, 126.734° | 51.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 151 km WNW of Tobelo, Indonesia with origin time 21:53 UTC on August 27, 2023. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 21:45:00 UTC | 5.7mww | 5 km E of El Cantón de San Pablo, Colombia 5.339°, -76.684° | 24.0 km | 39 | VI | yellow | ✓ Reviewed | USGS → |
On August 27, 2023 at 21:45 UTC, a magnitude 5.7 earthquake struck 5 km E of El Cantón de San Pablo, Colombia. The USGS PAGER system assigned a yellow alert level for this event, signalling local impact possible. It is the largest earthquake currently listed for worldwide seismic activity on August 27, 2023. See the M5.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 21:23:02 UTC | 4.7mb | 239 km WSW of Tual, Indonesia -6.082°, 130.639° | 62.7 km | - | - | - | ✓ Reviewed | USGS → |
On August 27, 2023, worldwide seismic activity registered a magnitude 4.7 earthquake 239 km WSW of Tual, Indonesia at 21:23 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 21:12:27 UTC | 3.2ml | Bering Strait 67.362°, -168.233° | 26.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 27, 2023 at 21:12 UTC, a magnitude 3.2 earthquake struck near Bering Strait. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 20:38:53 UTC | 2.3ml | 51 km NW of Toyah, Texas 31.604°, -104.212° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
At 20:38 UTC on August 27, 2023, a magnitude 2.3 tremor occurred 51 km NW of Toyah, Texas. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 20:28:47 UTC | 2.2md | 14 km WSW of Ferndale, CA 40.518°, -124.410° | 18.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 14 km WSW of Ferndale, CA on August 27, 2023 at 20:28 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 19:22:19 UTC | 2.2ml | 11 km N of Coyanosa, Texas 31.346°, -103.052° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 11 km N of Coyanosa, Texas on August 27, 2023 at 19:22 UTC. 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. | ||||||||
2023-08-27 2023-08-27 18:59:20 UTC | 2.3ml | 157 km SE of Nikolski, Alaska 51.869°, -167.340° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 157 km SE of Nikolski, Alaska at 18:59 UTC on August 27, 2023. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 18:42:09 UTC | 2.0ml | 23 km S of Central, Alaska 65.361°, -144.765° | 1.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 23 km S of Central, Alaska came in on August 27, 2023 at 18:42 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. | ||||||||
2023-08-27 2023-08-27 18:39:16 UTC | 3.0ml | 5 km WSW of Big Lake, Alaska 61.504°, -150.049° | 45.4 km | 5 | II | - | ✓ Reviewed | USGS → |
This magnitude 3.0 event was detected 5 km WSW of Big Lake, Alaska on August 27, 2023, with origin time 18:39 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 18:26:08 UTC | 2.0ml | 222 km W of Adak, Alaska 51.802°, -179.865° | 96.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 222 km W of Adak, Alaska on August 27, 2023 at 18:26 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 18:01:06 UTC | 2.7ml | 15 km SSE of Stonewall Gap, Colorado 37.019°, -105.002° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 15 km SSE of Stonewall Gap, Colorado on August 27, 2023, with origin time 18:01 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 17:03:49 UTC | 5.0mb | 174 km ESE of Iwaki, Japan 36.449°, 142.694° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.0 earthquake was recorded 174 km ESE of Iwaki, Japan on August 27, 2023 at 17:03 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 17:01:09 UTC | 2.1ml | 64 km S of Whites City, New Mexico 31.603°, -104.509° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 64 km S of Whites City, New Mexico at 17:01 UTC on August 27, 2023. Coming 7 hours after a magnitude 2.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 16:41:50 UTC | 4.6mb | 166 km ESE of Iwaki, Japan 36.534°, 142.629° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected 166 km ESE of Iwaki, Japan on August 27, 2023, with origin time 16:41 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 16:39:56 UTC | 2.2ml | 77 km SE of Kokhanok, Alaska 58.925°, -153.867° | 101.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 77 km SE of Kokhanok, Alaska with origin time 16:39 UTC on August 27, 2023. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 16:39:55 UTC | 2.5ml | 202 km W of Langlois, Oregon 43.229°, -126.902° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 202 km W of Langlois, Oregon on August 27, 2023 at 16:39 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 16:02:58 UTC | 2.0ml | 36 km ENE of Ensenada, B.C., MX 32.000°, -116.269° | 19.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 36 km ENE of Ensenada, B.C., MX at 16:02 UTC on August 27, 2023. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 16:00:26 UTC | 4.3mb | 64 km NE of Masohi, Indonesia -2.955°, 129.442° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 seismic event took place 64 km NE of Masohi, Indonesia on August 27, 2023 at 16:00 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-27 2023-08-27 15:59:21 UTC | 2.2ml | 5 km SW of Carpinteria, CA 34.367°, -119.551° | 0.3 km | 10 | - | - | ✓ Reviewed | USGS → |
On August 27, 2023, worldwide seismic activity registered a magnitude 2.2 earthquake 5 km SW of Carpinteria, CA at 15:59 UTC. 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. | ||||||||
2023-08-27 2023-08-27 15:46:38 UTC | 2.6ml | Fox Islands, Aleutian Islands, Alaska 52.408°, -169.960° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 27, 2023, worldwide seismic activity registered a magnitude 2.6 earthquake near Fox Islands, Aleutian Islands, Alaska at 15:46 UTC. See the M2.6 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 27, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.