Earthquakes on August 25, 2023
284
EARTHQUAKES on August 25, 2023
24-hour UTC period · USGS data
LARGEST: M5.5 — southern Mid-Atlantic Ridge
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
31
M3.0–3.9
15
M2.0–2.9
60
M1.0–1.9
173
Activity Summary
284
Total earthquakes
~250
Daily average
Normal
Activity level
5
M5.0+ events
Geographic Breakdown
Top Countries (International)
Significant Earthquakes (M4.5+)
5.5
southern Mid-Atlantic Ridge
20:47 UTC · 10.0 km deep
5.2
South Sandwich Islands region
17:22 UTC · 98.8 km deep
5.1
173 km ENE of Kavieng, Papua New Guinea
19:14 UTC · 10.0 km deep
5.0
4 km ENE of Lake Sebu, Philippines
19:13 UTC · 13.3 km deep
Felt by 5
5.0
South Sandwich Islands region
10:33 UTC · 61.0 km deep
4.9
253 km WSW of Tual, Indonesia
06:32 UTC · 57.3 km deep
4.9
southern Mid-Atlantic Ridge
01:07 UTC · 10.0 km deep
4.7
northern Mid-Atlantic Ridge
15:45 UTC · 10.0 km deep
Earthquake Map — August 25, 2023
All Earthquakes — August 25, 2023
Showing 30 of 111 (filtered from 284)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-08-25 2023-08-25 23:46:27 UTC | 2.8ml | 67 km WNW of Happy Valley, Alaska 60.169°, -152.854° | 107.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 67 km WNW of Happy Valley, Alaska on August 25, 2023, with origin time 23:46 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 23:22:34 UTC | 4.1mb | 36 km NNW of Yigo Village, Guam 13.838°, 144.759° | 154.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded 36 km NNW of Yigo Village, Guam on August 25, 2023 at 23:22 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 22:58:08 UTC | 2.1md | 8 km SW of Volcano, Hawaii 19.380°, -155.285° | 1.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2023 at 22:58 UTC, a magnitude 2.1 earthquake struck 8 km SW of Volcano, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 21 hours earlier. 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. | ||||||||
2023-08-25 2023-08-25 22:47:45 UTC | 2.4ml | 121 km ENE of Kodiak, Alaska 58.135°, -150.461° | 25.3 km | - | - | - | ✓ Reviewed | USGS → |
At 22:47 UTC on August 25, 2023, a magnitude 2.4 tremor occurred 121 km ENE of Kodiak, Alaska. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 22:37:57 UTC | 4.6mb | south of the Kermadec Islands -32.626°, -178.963° | 29.4 km | - | - | - | ✓ Reviewed | USGS → |
August 25, 2023 brought a magnitude 4.6 earthquake south of the Kermadec Islands, logged at 22:37 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 22:35:40 UTC | 4.6mb | southwest of Africa -52.252°, 17.020° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2023 at 22:35 UTC, a magnitude 4.6 earthquake struck southwest of Africa. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 22:35:33 UTC | 3.3ml | Rat Islands, Aleutian Islands, Alaska 51.025°, 178.652° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:35 UTC on August 25, 2023, a magnitude 3.3 tremor occurred near Rat Islands, Aleutian Islands, Alaska. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 22:33:25 UTC | 2.0ml | 37 km ESE of Adak, Alaska 51.745°, -176.131° | 62.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.0 event was detected 37 km ESE of Adak, Alaska on August 25, 2023, with origin time 22:33 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 22:33:08 UTC | 4.4mb | 44 km NE of Port-Olry, Vanuatu -14.747°, 167.358° | 140.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:33 UTC on August 25, 2023, a magnitude 4.4 tremor occurred 44 km NE of Port-Olry, Vanuatu. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 22:02:11 UTC | 4.1mb | 17 km ESE of Hitachi, Japan 36.537°, 140.829° | 61.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 17 km ESE of Hitachi, Japan with origin time 22:02 UTC on August 25, 2023. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 21:00:39 UTC | 2.2ml | 6 km E of Hebgen Lake Estates, Montana 44.781°, -111.104° | 8.4 km | - | - | - | ✓ Reviewed | USGS → |
August 25, 2023 brought a magnitude 2.2 earthquake 6 km E of Hebgen Lake Estates, Montana, logged at 21:00 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 20:56:43 UTC | 2.5md | 23 km W of Petrolia, CA 40.303°, -124.554° | 20.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 23 km W of Petrolia, CA with origin time 20:56 UTC on August 25, 2023. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 20:47:24 UTC | 5.5mww | southern Mid-Atlantic Ridge -39.563°, -16.037° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
On August 25, 2023 at 20:47 UTC, a magnitude 5.5 earthquake struck near southern Mid-Atlantic Ridge. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. It is the largest earthquake currently listed for worldwide seismic activity on August 25, 2023. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 20:32:15 UTC | 2.1ml | 32 km SSW of Los Ybanez, Texas 32.462°, -102.087° | 8.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 32 km SSW of Los Ybanez, Texas at 20:32 UTC on August 25, 2023. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 20:30:31 UTC | 3.3ml | 56 km SSE of Unalaska, Alaska 53.414°, -166.179° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.3 earthquake 56 km SSE of Unalaska, Alaska at 20:30 UTC on August 25, 2023. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 20:22:44 UTC | 3.2ml | 11 km E of Wright, Wyoming 43.739°, -105.353° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.2 event was detected 11 km E of Wright, Wyoming on August 25, 2023, with origin time 20:22 UTC. 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. | ||||||||
2023-08-25 2023-08-25 20:19:43 UTC | 2.1ml | Island of Hawaii, Hawaii 19.499°, -155.571° | 16.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded near Island of Hawaii, Hawaii on August 25, 2023 at 20:19 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 20:11:49 UTC | 2.7ml | 110 km SSE of King Cove, Alaska 54.169°, -161.573° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
August 25, 2023 brought a magnitude 2.7 earthquake 110 km SSE of King Cove, Alaska, logged at 20:11 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 20:03:49 UTC | 4.4mb | 59 km NNW of Finschhafen, Papua New Guinea -6.056°, 147.650° | 59.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 59 km NNW of Finschhafen, Papua New Guinea at 20:03 UTC on August 25, 2023. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 19:55:10 UTC | 4.3mb | 138 km NNW of Kavieng, Papua New Guinea -1.512°, 150.137° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2023 at 19:55 UTC, a magnitude 4.3 earthquake struck 138 km NNW of Kavieng, Papua New Guinea. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 19:34:10 UTC | 4.2mb | south of the Fiji Islands -23.846°, -179.818° | 542.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake south of the Fiji Islands came in on August 25, 2023 at 19:34 UTC. 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. | ||||||||
2023-08-25 2023-08-25 19:19:29 UTC | 3.4ml | 31 km ESE of Wright, Wyoming 43.612°, -105.153° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.4 earthquake 31 km ESE of Wright, Wyoming with origin time 19:19 UTC on August 25, 2023. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 19:18:41 UTC | 2.0ml | 49 km NNE of Yakutat, Alaska 59.927°, -139.274° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 49 km NNE of Yakutat, Alaska came in on August 25, 2023 at 19:18 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 19:14:47 UTC | 5.1mb | 173 km ENE of Kavieng, Papua New Guinea -1.839°, 152.173° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.1 earthquake 173 km ENE of Kavieng, Papua New Guinea with origin time 19:14 UTC on August 25, 2023. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 19:13:41 UTC | 5.0mww | 4 km ENE of Lake Sebu, Philippines 6.244°, 124.748° | 13.3 km | 5 | - | - | ✓ Reviewed | USGS → |
On August 25, 2023, worldwide seismic activity registered a magnitude 5.0 earthquake 4 km ENE of Lake Sebu, Philippines at 19:13 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 19:02:07 UTC | 4.0mb | Kepulauan Babar, Indonesia -7.118°, 129.813° | 121.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2023, worldwide seismic activity registered a magnitude 4.0 earthquake near Kepulauan Babar, Indonesia at 19:02 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 19:00:11 UTC | 4.3mb | 280 km E of Lospalos, Timor Leste -8.774°, 129.538° | 15.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 280 km E of Lospalos, Timor Leste on August 25, 2023 at 19:00 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 18:55:09 UTC | 2.5ml | 87 km SSW of Atka, Alaska 51.455°, -174.608° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 25, 2023 at 18:55 UTC, a magnitude 2.5 earthquake struck 87 km SSW of Atka, Alaska. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 18:22:55 UTC | 2.9md | 72 km WSW of Pole Ojea, Puerto Rico 17.636°, -67.772° | 17.1 km | - | - | - | ✓ Reviewed | USGS → |
At 18:22 UTC on August 25, 2023, a magnitude 2.9 tremor occurred 72 km WSW of Pole Ojea, Puerto Rico. It arrived roughly 14 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-08-25 2023-08-25 18:03:27 UTC | 3.9mb | 183 km SSW of Nikolski, Alaska 51.337°, -169.518° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.9 earthquake 183 km SSW of Nikolski, Alaska came in on August 25, 2023 at 18:03 UTC. See the M3.9 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 25, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.