Earthquakes on August 26, 2023
240
EARTHQUAKES on August 26, 2023
24-hour UTC period · USGS data
LARGEST: M5.1 — South Sandwich Islands region
99 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
2
M4.0–4.9
29
M3.0–3.9
18
M2.0–2.9
55
M1.0–1.9
136
Activity Summary
240
Total earthquakes
~250
Daily average
Normal
Activity level
2
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.1
South Sandwich Islands region
17:17 UTC · 99.3 km deep
5.1
west of Macquarie Island
09:40 UTC · 10.0 km deep
4.9
Minahasa, Sulawesi, Indonesia
22:45 UTC · 77.7 km deep
4.7
9 km SW of Hikari, Japan
13:29 UTC · 81.5 km deep
Felt by 4
4.7
115 km S of Kokopo, Papua New Guinea
04:21 UTC · 33.2 km deep
4.6
Tonga
21:30 UTC · 66.7 km deep
4.6
South Sandwich Islands region
19:21 UTC · 72.0 km deep
4.6
156 km NE of Kavieng, Papua New Guinea
12:16 UTC · 10.0 km deep
Earthquake Map — August 26, 2023
All Earthquakes — August 26, 2023
Showing 30 of 104 (filtered from 240)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-08-26 2023-08-26 23:51:50 UTC | 3.0ml | 42 km ESE of Atka, Alaska 51.993°, -173.673° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:51 UTC on August 26, 2023, a magnitude 3.0 tremor occurred 42 km ESE of Atka, Alaska. Coming 5 hours after a magnitude 3.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 23:43:06 UTC | 3.3ml | 46 km ESE of Atka, Alaska 51.976°, -173.631° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.3 event was detected 46 km ESE of Atka, Alaska on August 26, 2023, with origin time 23:43 UTC. It arrived roughly 4 hours after a larger magnitude 3.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 23:22:21 UTC | 4.2mb | 72 km NW of Pante Makasar, Timor Leste -8.732°, 123.924° | 109.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake 72 km NW of Pante Makasar, Timor Leste with origin time 23:22 UTC on August 26, 2023. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 23:05:23 UTC | 3.1ml | 63 km S of Whites City, New Mexico 31.612°, -104.497° | 6.9 km | - | - | - | ✓ Reviewed | USGS → |
On August 26, 2023 at 23:05 UTC, a magnitude 3.1 earthquake struck 63 km S of Whites City, New Mexico. This event falls inside the aftershock decay of a nearby magnitude 3.8 earthquake that occurred about 10 hours earlier. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 23:05:06 UTC | 2.4ml | 60 km S of Whites City, New Mexico 31.643°, -104.497° | 6.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 60 km S of Whites City, New Mexico came in on August 26, 2023 at 23:05 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.8 earthquake that occurred about 10 hours earlier. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 22:45:29 UTC | 4.9mb | Minahasa, Sulawesi, Indonesia 0.886°, 121.962° | 77.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.9 earthquake near Minahasa, Sulawesi, Indonesia with origin time 22:45 UTC on August 26, 2023. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 22:30:38 UTC | 2.0ml | 65 km E of Maneadero, B.C., MX 31.772°, -115.879° | 13.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 65 km E of Maneadero, B.C., MX on August 26, 2023, with origin time 22:30 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 22:19:45 UTC | 4.5mb | Bonin Islands, Japan region 28.473°, 142.896° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded in the Bonin Islands, Japan region on August 26, 2023 at 22:19 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 22:11:08 UTC | 4.4mb | 9 km NW of Oyim, Uzbekistan 40.876°, 72.658° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 9 km NW of Oyim, Uzbekistan at 22:11 UTC on August 26, 2023. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 22:08:32 UTC | 2.2ml | 33 km SE of Eureka Roadhouse, Alaska 61.695°, -146.811° | 29.0 km | - | - | - | ✓ Reviewed | USGS → |
August 26, 2023 brought a magnitude 2.2 earthquake 33 km SE of Eureka Roadhouse, Alaska, logged at 22:08 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 22:07:51 UTC | 4.1mb | 86 km SW of Ternate, Indonesia 0.273°, 126.797° | 50.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.1 earthquake 86 km SW of Ternate, Indonesia at 22:07 UTC on August 26, 2023. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 21:41:56 UTC | 4.3mb | 57 km SSE of Kokopo, Papua New Guinea -4.851°, 152.375° | 66.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 26, 2023 at 21:41 UTC, a magnitude 4.3 earthquake struck 57 km SSE of Kokopo, Papua New Guinea. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 21:36:06 UTC | 2.4md | 15 km N of Covelo, CA 39.926°, -123.249° | 5.8 km | - | - | - | ✓ Reviewed | USGS → |
August 26, 2023 brought a magnitude 2.4 earthquake 15 km N of Covelo, CA, logged at 21:36 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 21:30:48 UTC | 4.6mb | Tonga -15.048°, -173.872° | 66.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake near Tonga at 21:30 UTC on August 26, 2023. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 20:43:02 UTC | 2.8ml | 42 km SE of Atka, Alaska 51.976°, -173.696° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 42 km SE of Atka, Alaska with origin time 20:43 UTC on August 26, 2023. This event falls inside the aftershock decay of a nearby magnitude 3.7 earthquake that occurred about 1 hours earlier. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 19:47:19 UTC | 2.3ml | 68 km E of Port Alsworth, Alaska 60.230°, -153.083° | 133.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 68 km E of Port Alsworth, Alaska on August 26, 2023 at 19:47 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 19:46:44 UTC | 4.1mb | 88 km S of Nikolski, Alaska 52.151°, -168.745° | 35.0 km | - | I | - | ✓ Reviewed | USGS → |
This magnitude 4.1 event was detected 88 km S of Nikolski, Alaska on August 26, 2023, with origin time 19:46 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 19:41:09 UTC | 2.7ml | 86 km SE of King Cove, Alaska 54.608°, -161.228° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 86 km SE of King Cove, Alaska at 19:41 UTC on August 26, 2023. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 10 hours earlier. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 19:21:29 UTC | 4.6mb | South Sandwich Islands region -56.254°, -26.610° | 72.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected in the South Sandwich Islands region on August 26, 2023, with origin time 19:21 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 19:15:54 UTC | 3.0ml | Fox Islands, Aleutian Islands, Alaska 52.004°, -168.640° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake near Fox Islands, Aleutian Islands, Alaska at 19:15 UTC on August 26, 2023. It arrived roughly 3 hours after a larger magnitude 3.3 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 19:13:54 UTC | 3.7ml | 46 km ESE of Atka, Alaska 52.007°, -173.595° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 26, 2023, worldwide seismic activity registered a magnitude 3.7 earthquake 46 km ESE of Atka, Alaska at 19:13 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 M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 18:45:51 UTC | 2.1md | 1 km SSW of Prattville, CA 40.199°, -121.159° | 2.3 km | - | - | - | ✓ Reviewed | USGS → |
At 18:45 UTC on August 26, 2023, a magnitude 2.1 tremor occurred 1 km SSW of Prattville, CA. It arrived roughly 14 hours after a larger magnitude 2.5 mainshock in the same 20 km area, placing it within the typical aftershock window. 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. | ||||||||
2023-08-26 2023-08-26 17:27:39 UTC | 2.1ml | 53 km SSE of Atka, Alaska 51.731°, -173.977° | 14.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 53 km SSE of Atka, Alaska came in on August 26, 2023 at 17:27 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 17:20:35 UTC | 2.3ml | 63 km SSW of Whites City, New Mexico 31.617°, -104.519° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 63 km SSW of Whites City, New Mexico with origin time 17:20 UTC on August 26, 2023. It arrived roughly 4 hours after a larger magnitude 3.8 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 17:17:13 UTC | 5.1mb | South Sandwich Islands region -56.075°, -27.246° | 99.3 km | - | - | - | ✓ Reviewed | USGS → |
On August 26, 2023 at 17:17 UTC, a magnitude 5.1 earthquake struck in the South Sandwich Islands region. It is the largest earthquake currently listed for worldwide seismic activity on August 26, 2023. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 17:16:10 UTC | 2.1md | 10 km E of Pāhala, Hawaii 19.197°, -155.380° | 31.5 km | - | - | - | Auto | USGS → |
At 17:16 UTC on August 26, 2023, a magnitude 2.1 tremor occurred 10 km E of Pāhala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 16 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 16:43:11 UTC | 2.7ml | 121 km SSW of Point Hope, Alaska 67.370°, -167.980° | 14.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 121 km SSW of Point Hope, Alaska on August 26, 2023, with origin time 16:43 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 16:41:58 UTC | 4.3mb | 45 km NE of Yigo Village, Guam 13.841°, 145.167° | 117.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 45 km NE of Yigo Village, Guam on August 26, 2023 at 16:41 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 16:12:07 UTC | 3.3ml | 86 km S of Nikolski, Alaska 52.169°, -168.682° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.3 earthquake 86 km S of Nikolski, Alaska came in on August 26, 2023 at 16:12 UTC. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-26 2023-08-26 15:49:56 UTC | 2.9ml | 85 km NW of Karluk, Alaska 58.176°, -155.342° | 4.2 km | - | - | - | ✓ Reviewed | USGS → |
August 26, 2023 brought a magnitude 2.9 earthquake 85 km NW of Karluk, Alaska, logged at 15:49 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. | ||||||||
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 26, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.