Earthquakes on August 6, 2023
264
EARTHQUAKES on August 6, 2023
24-hour UTC period · USGS data
LARGEST: M5.7 — South Sandwich Islands region
12 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
9
M4.0–4.9
46
M3.0–3.9
10
M2.0–2.9
65
M1.0–1.9
134
Activity Summary
264
Total earthquakes
~250
Daily average
Normal
Activity level
9
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.7
South Sandwich Islands region
14:17 UTC · 12.0 km deep
5.5
38 km E of Nishinoomote, Japan
18:12 UTC · 12.9 km deep
5.5
Pacific-Antarctic Ridge
04:04 UTC · 10.0 km deep
5.4
South Sandwich Islands region
23:55 UTC · 15.5 km deep
5.3
49 km ESE of Palu, Indonesia
10:09 UTC · 10.0 km deep
Felt by 1
5.3
Badakhshan, Afghanistan
00:32 UTC · 218.0 km deep
Felt by 8
5.2
South Sandwich Islands region
14:25 UTC · 21.4 km deep
5.2
53 km ESE of Palu, Indonesia
01:44 UTC · 10.0 km deep
Earthquake Map — August 6, 2023
All Earthquakes — August 6, 2023
Showing 30 of 130 (filtered from 264)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-08-06 2023-08-06 23:55:12 UTC | 5.4mww | South Sandwich Islands region -55.736°, -27.201° | 15.5 km | - | III | green | ✓ Reviewed | USGS → |
On August 6, 2023, worldwide seismic activity registered a magnitude 5.4 earthquake in the South Sandwich Islands region at 23:55 UTC. It arrived roughly 10 hours after a larger magnitude 5.7 mainshock in the same 20 km area, placing it within the typical aftershock window. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 23:32:34 UTC | 4.4mwr | 8 km WNW of Puerto Armuelles, Panama 8.299°, -82.940° | 27.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 8 km WNW of Puerto Armuelles, Panama on August 6, 2023 at 23:32 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 23:31:32 UTC | 4.2mb | south of the Fiji Islands -23.239°, -179.751° | 559.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake south of the Fiji Islands at 23:31 UTC on August 6, 2023. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 23:25:26 UTC | 3.3ml | 23 km NNW of Tehachapi, CA 35.317°, -118.566° | 5.2 km | 17 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 seismic event took place 23 km NNW of Tehachapi, CA on August 6, 2023 at 23:25 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 23:20:56 UTC | 2.0ml | 156 km E of McCarthy, Alaska 61.345°, -139.995° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 156 km E of McCarthy, Alaska came in on August 6, 2023 at 23:20 UTC. It arrived roughly 3 hours after a larger magnitude 4.8 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 23:18:59 UTC | 2.2ml | 13 km S of Volcano, Hawaii 19.323°, -155.241° | 4.5 km | - | - | - | ✓ Reviewed | USGS → |
On August 6, 2023 at 23:18 UTC, a magnitude 2.2 earthquake struck 13 km S of Volcano, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.2 earthquake that occurred about 1 hours earlier. 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. | ||||||||
2023-08-06 2023-08-06 23:16:32 UTC | 2.0ml | 5 km WSW of Volcano, Hawaii 19.417°, -155.278° | -0.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 5 km WSW of Volcano, Hawaii on August 6, 2023 at 23:16 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.2 earthquake that occurred about 1 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. | ||||||||
2023-08-06 2023-08-06 22:49:15 UTC | 2.2ml | 8 km SW of Volcano, Hawaii 19.382°, -155.282° | 1.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 8 km SW of Volcano, Hawaii on August 6, 2023 at 22:49 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. | ||||||||
2023-08-06 2023-08-06 22:48:20 UTC | 2.1md | 7 km NNW of Pinnacles, CA 36.586°, -121.183° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
On August 6, 2023, worldwide seismic activity registered a magnitude 2.1 earthquake 7 km NNW of Pinnacles, CA at 22:48 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 22:47:57 UTC | 2.4ml | 14 km SW of Stanley, Idaho 44.114°, -115.058° | 5.8 km | - | - | - | ✓ Reviewed | USGS → |
At 22:47 UTC on August 6, 2023, a magnitude 2.4 tremor occurred 14 km SW of Stanley, Idaho. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 22:47:04 UTC | 4.0mb | 96 km W of El Aguilar, Argentina -23.145°, -66.619° | 202.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 6, 2023, worldwide seismic activity registered a magnitude 4.0 earthquake 96 km W of El Aguilar, Argentina at 22:47 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 22:28:09 UTC | 4.2mb | 146 km SSW of Muncar, Indonesia -9.725°, 114.035° | 41.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 146 km SSW of Muncar, Indonesia on August 6, 2023, with origin time 22:28 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.9 earthquake that occurred about 3 hours earlier. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 22:18:19 UTC | 2.3ml | 52 km ENE of Port Alsworth, Alaska 60.306°, -153.396° | 163.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 6, 2023 at 22:18 UTC, a magnitude 2.3 earthquake struck 52 km ENE of Port Alsworth, Alaska. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 22:05:03 UTC | 2.3ml | 102 km E of Circle, Alaska 65.878°, -141.817° | 10.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 102 km E of Circle, Alaska on August 6, 2023 at 22:05 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 22:04:55 UTC | 4.5mwr | 135 km SE of Atka, Alaska 51.376°, -172.742° | 18.0 km | - | I | - | ✓ Reviewed | USGS → |
On August 6, 2023 at 22:04 UTC, a magnitude 4.5 earthquake struck 135 km SE of Atka, Alaska. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 22:01:35 UTC | 4.2mb | Volcano Islands, Japan region 25.071°, 141.362° | 197.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake in the Volcano Islands, Japan region came in on August 6, 2023 at 22:01 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 21:58:34 UTC | 2.3md | 8 km W of Tunnel Hill, Georgia 34.830°, -85.140° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 8 km W of Tunnel Hill, Georgia with origin time 21:58 UTC on August 6, 2023. 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. | ||||||||
2023-08-06 2023-08-06 21:23:38 UTC | 2.7md | Mona Passage 18.328°, -67.241° | 19.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 6, 2023 at 21:23 UTC, a magnitude 2.7 earthquake struck near Mona Passage. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 21:08:21 UTC | 2.0ml | Kodiak Island region, Alaska 58.888°, -152.227° | 52.6 km | - | - | - | ✓ Reviewed | USGS → |
August 6, 2023 brought a magnitude 2.0 earthquake in the Kodiak Island region, Alaska, logged at 21:08 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 20:31:13 UTC | 2.0ml | 158 km E of McCarthy, Alaska 61.342°, -139.965° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 6, 2023 at 20:31 UTC, a magnitude 2.0 earthquake struck 158 km E of McCarthy, Alaska. It arrived roughly 1 hours after a larger magnitude 4.8 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 20:22:04 UTC | 4.8mwr | 157 km E of McCarthy, Alaska 61.346°, -139.974° | 3.0 km | 7 | VI | - | ✓ Reviewed | USGS → |
On August 6, 2023, worldwide seismic activity registered a magnitude 4.8 earthquake 157 km E of McCarthy, Alaska at 20:22 UTC. In the 72 hours after this event, the USGS recorded 13 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 20:16:08 UTC | 2.0ml | 66 km ESE of Denali National Park, Alaska 63.243°, -150.575° | 127.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 66 km ESE of Denali National Park, Alaska on August 6, 2023 at 20:16 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 20:02:22 UTC | 4.4mb | 139 km S of Muncar, Indonesia -9.675°, 114.111° | 41.8 km | - | - | - | ✓ Reviewed | USGS → |
August 6, 2023 brought a magnitude 4.4 earthquake 139 km S of Muncar, Indonesia, logged at 20:02 UTC. Coming 1 hours after a magnitude 4.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 20:01:16 UTC | 2.6ml | 165 km SSW of Nikolski, Alaska 51.676°, -170.140° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 165 km SSW of Nikolski, Alaska with origin time 20:01 UTC on August 6, 2023. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 19:49:50 UTC | 4.4mb | 185 km S of Al Ghayz̧ah, Yemen 14.558°, 51.868° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 6, 2023 at 19:49 UTC, a magnitude 4.4 earthquake struck 185 km S of Al Ghayz̧ah, Yemen. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 19:46:19 UTC | 4.5mb | 139 km S of Muncar, Indonesia -9.687°, 114.216° | 43.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 139 km S of Muncar, Indonesia on August 6, 2023 at 19:46 UTC. It arrived roughly 1 hours after a larger magnitude 4.9 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 19:40:17 UTC | 4.9mb | 141 km SSW of Muncar, Indonesia -9.686°, 114.064° | 42.8 km | - | - | - | ✓ Reviewed | USGS → |
August 6, 2023 brought a magnitude 4.9 earthquake 141 km SSW of Muncar, Indonesia, logged at 19:40 UTC. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 19:35:38 UTC | 2.3md | 2 km W of Guayanilla, Puerto Rico 18.024°, -66.818° | 17.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 2 km W of Guayanilla, Puerto Rico came in on August 6, 2023 at 19:35 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.3 earthquake that occurred about 13 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-06 2023-08-06 19:17:28 UTC | 2.0mb_lg | 20 km S of Weston, Colorado 36.947°, -104.862° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 20 km S of Weston, Colorado with origin time 19:17 UTC on August 6, 2023. Coming 9 hours after a magnitude 3.4 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. | ||||||||
2023-08-06 2023-08-06 19:10:22 UTC | 4.3mb | northern Mid-Atlantic Ridge 52.260°, -31.813° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected near northern Mid-Atlantic Ridge on August 6, 2023, with origin time 19:10 UTC. See the M4.3 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 6, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.