Earthquakes on August 16, 2025
211
EARTHQUAKES on August 16, 2025
24-hour UTC period · USGS data
LARGEST: M5.8 — 13 km NNW of Poso, Indonesia
8 km deep · 28 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
50
M3.0–3.9
3
M2.0–2.9
42
M1.0–1.9
110
Activity Summary
211
Total earthquakes
~250
Daily average
Normal
Activity level
6
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.8
13 km NNW of Poso, Indonesia
22:38 UTC · 8.0 km deep
Felt by 28
5.6
southeast of the Loyalty Islands
12:08 UTC · 11.0 km deep
5.5
32 km ESE of Takanabe, Japan
21:13 UTC · 30.0 km deep
Felt by 6
5.4
Mid-Indian Ridge
08:05 UTC · 10.0 km deep
5.3
south of the Fiji Islands
22:52 UTC · 10.0 km deep
5.1
136 km SW of Hengchun, Taiwan
22:51 UTC · 10.0 km deep
4.9
6 km SSE of Hukay, Philippines
20:35 UTC · 148.8 km deep
Felt by 1
4.9
161 km S of Severo-Kuril’sk, Russia
15:51 UTC · 30.7 km deep
Earthquake Map — August 16, 2025
All Earthquakes — August 16, 2025
Showing 30 of 101 (filtered from 211)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-08-16 2025-08-16 22:52:07 UTC | 5.3mww | south of the Fiji Islands -24.355°, -176.017° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
At 22:52 UTC on August 16, 2025, a magnitude 5.3 tremor occurred south of the Fiji Islands. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 22:51:28 UTC | 5.1mww | 136 km SW of Hengchun, Taiwan 21.045°, 119.910° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.1 earthquake 136 km SW of Hengchun, Taiwan at 22:51 UTC on August 16, 2025. The event was offshore. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 22:49:22 UTC | 2.4md | 20 km SW of Ferndale, CA 40.472°, -124.463° | 19.6 km | 3 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 20 km SW of Ferndale, CA came in on August 16, 2025 at 22:49 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 22:38:52 UTC | 5.8mww | 13 km NNW of Poso, Indonesia -1.275°, 120.721° | 8.0 km | 28 | VIII | yellow | ✓ Reviewed | USGS → |
On August 16, 2025 at 22:38 UTC, a magnitude 5.8 earthquake struck 13 km NNW of Poso, Indonesia. 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 16, 2025. See the M5.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 22:10:07 UTC | 2.1ml | Rat Islands, Aleutian Islands, Alaska 51.910°, 178.284° | 141.1 km | - | - | - | ✓ Reviewed | USGS → |
On August 16, 2025, worldwide seismic activity registered a magnitude 2.1 earthquake near Rat Islands, Aleutian Islands, Alaska at 22:10 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 21:28:30 UTC | 2.0ml | 140 km W of Adak, Alaska 51.674°, -178.637° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
At 21:28 UTC on August 16, 2025, a magnitude 2.0 tremor occurred 140 km W of Adak, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 21:13:14 UTC | 5.5mww | 32 km ESE of Takanabe, Japan 32.013°, 131.811° | 30.0 km | 6 | V | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.5 earthquake 32 km ESE of Takanabe, Japan with origin time 21:13 UTC on August 16, 2025. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 21:04:10 UTC | 4.0mb | 221 km ESE of Petropavlovsk-Kamchatsky, Russia 52.034°, 161.425° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On August 16, 2025, worldwide seismic activity registered a magnitude 4.0 earthquake 221 km ESE of Petropavlovsk-Kamchatsky, Russia at 21:04 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 20:35:42 UTC | 4.9mb | 6 km SSE of Hukay, Philippines 13.785°, 120.720° | 148.8 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.9 event was detected 6 km SSE of Hukay, Philippines on August 16, 2025, with origin time 20:35 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 19:50:38 UTC | 4.7mb | 181 km ESE of Kimbe, Papua New Guinea -6.226°, 151.631° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.7 earthquake 181 km ESE of Kimbe, Papua New Guinea with origin time 19:50 UTC on August 16, 2025. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 19:36:33 UTC | 4.1mb | 75 km WSW of Tobelo, Indonesia 1.553°, 127.355° | 154.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.1 event was detected 75 km WSW of Tobelo, Indonesia on August 16, 2025, with origin time 19:36 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 19:30:49 UTC | 4.5mb | 37 km WSW of Bishan, China 30.652°, 107.094° | 13.2 km | - | - | - | ✓ Reviewed | USGS → |
August 16, 2025 brought a magnitude 4.5 earthquake 37 km WSW of Bishan, China, logged at 19:30 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 19:19:30 UTC | 2.9ml | 48 km ESE of Adak, Alaska 51.697°, -175.998° | 62.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 16, 2025 at 19:19 UTC, a magnitude 2.9 earthquake struck 48 km ESE of Adak, Alaska. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 19:16:01 UTC | 2.9ml | 94 km SSE of Nikolai, Alaska 62.283°, -153.433° | 5.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 94 km SSE of Nikolai, Alaska on August 16, 2025 at 19:16 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 19:12:16 UTC | 4.1mb | 99 km E of Severo-Kuril’sk, Russia 50.806°, 157.522° | 58.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.1 earthquake 99 km E of Severo-Kuril’sk, Russia came in on August 16, 2025 at 19:12 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 18:50:06 UTC | 4.1mb | east of the Kuril Islands 45.732°, 153.756° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 seismic event took place east of the Kuril Islands on August 16, 2025 at 18:50 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 18:22:15 UTC | 4.6mb | 184 km ESE of Kimbe, Papua New Guinea -6.241°, 151.654° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake 184 km ESE of Kimbe, Papua New Guinea at 18:22 UTC on August 16, 2025. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 17:41:54 UTC | 4.4mb | 155 km N of Finschhafen, Papua New Guinea -5.153°, 147.910° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 155 km N of Finschhafen, Papua New Guinea came in on August 16, 2025 at 17:41 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 17:35:08 UTC | 4.7mb | 40 km SSW of Khorugh, Tajikistan 37.134°, 71.444° | 113.6 km | 1 | - | - | ✓ Reviewed | USGS → |
On August 16, 2025, worldwide seismic activity registered a magnitude 4.7 earthquake 40 km SSW of Khorugh, Tajikistan at 17:35 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 17:32:19 UTC | 2.1ml | 44 km ESE of Pedro Bay, Alaska 59.682°, -153.339° | 114.0 km | - | - | - | ✓ Reviewed | USGS → |
At 17:32 UTC on August 16, 2025, a magnitude 2.1 tremor occurred 44 km ESE of Pedro Bay, Alaska. It arrived roughly 15 hours after a larger magnitude 2.3 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 17:29:02 UTC | 2.0ml | 91 km SSE of Sand Point, Alaska 54.575°, -159.971° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 91 km SSE of Sand Point, Alaska at 17:29 UTC on August 16, 2025. Coming 17 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 17:12:53 UTC | 2.1ml | 12 km W of Stanton, Texas 32.119°, -101.918° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 12 km W of Stanton, Texas at 17:12 UTC on August 16, 2025. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 16:58:09 UTC | 4.2mb | 235 km SE of Vilyuchinsk, Russia 51.357°, 160.716° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 235 km SE of Vilyuchinsk, Russia on August 16, 2025, with origin time 16:58 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 16:55:00 UTC | 2.9ml | 22 km W of Petrolia, CA 40.285°, -124.540° | 20.0 km | 4 | II | - | ✓ Reviewed | USGS → |
On August 16, 2025, worldwide seismic activity registered a magnitude 2.9 earthquake 22 km W of Petrolia, CA at 16:55 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 16:33:13 UTC | 2.1ml | 100 km SSE of Sand Point, Alaska 54.534°, -159.769° | 15.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 100 km SSE of Sand Point, Alaska on August 16, 2025, with origin time 16:33 UTC. Coming 11 hours after a magnitude 2.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 16:32:25 UTC | 4.2mb | Kermadec Islands, New Zealand -30.342°, -178.607° | 168.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake near Kermadec Islands, New Zealand came in on August 16, 2025 at 16:32 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 16:28:39 UTC | 4.8mww | Azores-Cape St. Vincent Ridge 37.780°, -17.937° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 16, 2025 brought a magnitude 4.8 earthquake near Azores-Cape St. Vincent Ridge, logged at 16:28 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 16:20:45 UTC | 4.1mb | 233 km SSW of Severo-Kuril’sk, Russia 48.698°, 155.027° | 51.7 km | - | - | - | ✓ Reviewed | USGS → |
August 16, 2025 brought a magnitude 4.1 earthquake 233 km SSW of Severo-Kuril’sk, Russia, logged at 16:20 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 16:13:57 UTC | 4.4mb | 234 km ESE of Severo-Kuril’sk, Russia 49.586°, 158.936° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 234 km ESE of Severo-Kuril’sk, Russia on August 16, 2025 at 16:13 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-08-16 2025-08-16 16:10:07 UTC | 4.4mb | 174 km SE of Vilyuchinsk, Russia 51.647°, 159.870° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
August 16, 2025 brought a magnitude 4.4 earthquake 174 km SE of Vilyuchinsk, Russia, logged at 16:10 UTC. The event was offshore. See the M4.4 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 16, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.