Earthquakes on August 23, 2023
292
EARTHQUAKES on August 23, 2023
24-hour UTC period · USGS data
554 km deep · 2 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
22
M3.0–3.9
15
M2.0–2.9
55
M1.0–1.9
197
Activity Summary
292
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
6.2
17 km NNW of El Hoyo, Argentina
14:22 UTC · 554.0 km deep
Felt by 2
5.2
57 km E of La Tirana, Chile
14:02 UTC · 85.0 km deep
Felt by 17
5.1
South Sandwich Islands region
17:51 UTC · 91.4 km deep
4.9
3 km E of Bansud, Philippines
17:38 UTC · 10.0 km deep
Felt by 2
4.9
Fiji region
03:27 UTC · 412.0 km deep
4.7
16 km E of Pulandian, China
10:19 UTC · 10.0 km deep
Felt by 11
4.7
Guam region
06:43 UTC · 41.6 km deep
Felt by 1
4.6
southeast of the Loyalty Islands
04:33 UTC · 10.0 km deep
Earthquake Map — August 23, 2023
All Earthquakes — August 23, 2023
Showing 30 of 95 (filtered from 292)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-08-23 2023-08-23 23:52:40 UTC | 2.1ml | 47 km SSW of Skwentna, Alaska 61.585°, -151.665° | 81.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 47 km SSW of Skwentna, Alaska on August 23, 2023, with origin time 23:52 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 23:45:17 UTC | 2.2ml | Kenai Peninsula, Alaska 60.995°, -151.502° | 69.0 km | - | - | - | ✓ Reviewed | USGS → |
August 23, 2023 brought a magnitude 2.2 earthquake near Kenai Peninsula, Alaska, logged at 23:45 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 23:23:17 UTC | 2.3ml | 7 km SW of Volcano, Hawaii 19.386°, -155.278° | 1.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 7 km SW of Volcano, Hawaii at 23:23 UTC on August 23, 2023. Coming 6 hours after a magnitude 2.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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. | ||||||||
2023-08-23 2023-08-23 23:20:37 UTC | 3.5mb | Fox Islands, Aleutian Islands, Alaska 52.222°, -170.408° | 48.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.5 seismic event took place near Fox Islands, Aleutian Islands, Alaska on August 23, 2023 at 23:20 UTC. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 23:19:18 UTC | 4.4mb | 284 km E of Levuka, Fiji -18.012°, -178.001° | 573.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 23, 2023 at 23:19 UTC, a magnitude 4.4 earthquake struck 284 km E of Levuka, Fiji. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 22:45:44 UTC | 2.1md | 13 km S of Volcano, Hawaii 19.317°, -155.245° | 5.6 km | - | - | - | ✓ Reviewed | USGS → |
At 22:45 UTC on August 23, 2023, a magnitude 2.1 tremor occurred 13 km S of Volcano, Hawaii. Coming 5 hours after a magnitude 2.8 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. | ||||||||
2023-08-23 2023-08-23 22:03:08 UTC | 4.3mb | 66 km NW of Sola, Vanuatu -13.461°, 167.111° | 165.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 66 km NW of Sola, Vanuatu at 22:03 UTC on August 23, 2023. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 21:59:06 UTC | 2.1ml | 24 km WNW of Sitka, Alaska 57.105°, -135.724° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 24 km WNW of Sitka, Alaska came in on August 23, 2023 at 21:59 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 21:07:05 UTC | 2.0ml | 75 km SSW of Unalaska, Alaska 53.217°, -166.845° | 31.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 75 km SSW of Unalaska, Alaska came in on August 23, 2023 at 21:07 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 20:48:31 UTC | 4.0mb | Banda Sea -6.760°, 129.620° | 158.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 23, 2023, worldwide seismic activity registered a magnitude 4.0 earthquake near Banda Sea at 20:48 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 20:48:16 UTC | 3.1ml | 45 km NW of Island Park, Idaho 44.690°, -111.799° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.1 earthquake 45 km NW of Island Park, Idaho came in on August 23, 2023 at 20:48 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 20:21:49 UTC | 3.3ml | 54 km S of Whites City, New Mexico 31.689°, -104.292° | 8.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.3 earthquake 54 km S of Whites City, New Mexico with origin time 20:21 UTC on August 23, 2023. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 19:52:55 UTC | 4.2mb | Java, Indonesia -8.582°, 111.660° | 62.1 km | - | - | - | ✓ Reviewed | USGS → |
August 23, 2023 brought a magnitude 4.2 earthquake near Java, Indonesia, logged at 19:52 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 19:50:55 UTC | 2.1ml | 21 km N of Snyder, Texas 32.910°, -100.883° | 5.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 21 km N of Snyder, Texas on August 23, 2023 at 19:50 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 19:46:13 UTC | 2.2ml | 17 km NE of Hermleigh, Texas 32.755°, -100.640° | 8.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 23, 2023 at 19:46 UTC, a magnitude 2.2 earthquake struck 17 km NE of Hermleigh, Texas. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 19:13:25 UTC | 3.6ml | Rat Islands, Aleutian Islands, Alaska 51.650°, 178.697° | 70.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.6 earthquake near Rat Islands, Aleutian Islands, Alaska came in on August 23, 2023 at 19:13 UTC. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 19:11:04 UTC | 2.9ml | 63 km SE of Adak, Alaska 51.416°, -176.082° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 63 km SE of Adak, Alaska on August 23, 2023 at 19:11 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 18:51:52 UTC | 3.7ml | 33 km ENE of Pedro Bay, Alaska 59.941°, -153.595° | 151.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.7 event was detected 33 km ENE of Pedro Bay, Alaska on August 23, 2023, with origin time 18:51 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 18:41:24 UTC | 2.0ml | 6 km NE of Coso Junction, CA 36.090°, -117.903° | 4.1 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 6 km NE of Coso Junction, CA on August 23, 2023 at 18:41 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. | ||||||||
2023-08-23 2023-08-23 18:35:14 UTC | 2.3ml | 12 km E of Pāhala, Hawaii 19.223°, -155.364° | 30.4 km | - | - | - | Auto | USGS → |
On August 23, 2023, worldwide seismic activity registered a magnitude 2.3 earthquake 12 km E of Pāhala, Hawaii at 18:35 UTC. It arrived roughly 8 hours after a larger magnitude 2.9 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. | ||||||||
2023-08-23 2023-08-23 18:22:56 UTC | 3.0ml | 73 km S of Lorino, Russia 64.846°, -171.887° | 27.2 km | - | - | - | ✓ Reviewed | USGS → |
August 23, 2023 brought a magnitude 3.0 earthquake 73 km S of Lorino, Russia, logged at 18:22 UTC. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 18:11:29 UTC | 2.0ml | 128 km WSW of Adak, Alaska 51.432°, -178.346° | 24.1 km | - | - | - | ✓ Reviewed | USGS → |
August 23, 2023 brought a magnitude 2.0 earthquake 128 km WSW of Adak, Alaska, logged at 18:11 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 18:08:55 UTC | 3.2ml | 31 km WSW of Birney, Montana 45.245°, -106.906° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.2 earthquake 31 km WSW of Birney, Montana at 18:08 UTC on August 23, 2023. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 17:59:15 UTC | 2.5ml | 112 km SE of Perryville, Alaska 55.267°, -157.774° | 3.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 112 km SE of Perryville, Alaska at 17:59 UTC on August 23, 2023. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 17:51:25 UTC | 5.1mb | South Sandwich Islands region -55.897°, -27.484° | 91.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.1 earthquake in the South Sandwich Islands region with origin time 17:51 UTC on August 23, 2023. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 17:48:52 UTC | 2.2ml | 9 km E of Pāhala, Hawaii 19.201°, -155.387° | 30.0 km | - | - | - | Auto | USGS → |
A magnitude 2.2 seismic event took place 9 km E of Pāhala, Hawaii on August 23, 2023 at 17:48 UTC. Coming 7 hours after a magnitude 2.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 17:43:14 UTC | 2.8md | 6 km SSW of Volcano, Hawaii 19.393°, -155.264° | 9.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 seismic event took place 6 km SSW of Volcano, Hawaii on August 23, 2023 at 17:43 UTC. In the 72 hours after this event, the USGS recorded 15 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 17:38:38 UTC | 4.9mb | 3 km E of Bansud, Philippines 12.860°, 121.491° | 10.0 km | 2 | - | - | ✓ Reviewed | USGS → |
On August 23, 2023, worldwide seismic activity registered a magnitude 4.9 earthquake 3 km E of Bansud, Philippines at 17:38 UTC. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 17:32:53 UTC | 2.2ml | 51 km SSE of Denali National Park, Alaska 63.096°, -151.483° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 51 km SSE of Denali National Park, Alaska on August 23, 2023 at 17:32 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-23 2023-08-23 15:54:39 UTC | 2.3ml | 9 km WNW of Fort Bridger, Wyoming 41.339°, -110.494° | 58.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 9 km WNW of Fort Bridger, Wyoming on August 23, 2023, with origin time 15:54 UTC. See the M2.3 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 23, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.