Earthquakes on September 16, 2025
176
EARTHQUAKES on September 16, 2025
24-hour UTC period · USGS data
31 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
24
M3.0–3.9
5
M2.0–2.9
31
M1.0–1.9
112
Activity Summary
176
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
6.0
208 km SE of Kokopo, Papua New Guinea
16:59 UTC · 31.0 km deep
5.1
130 km SSW of Nikolski, Alaska
09:02 UTC · 26.9 km deep
5.1
44 km WSW of Sechura, Peru
03:41 UTC · 10.0 km deep
Felt by 1
5.0
165 km SSE of Vilyuchinsk, Russia
06:05 UTC · 35.0 km deep
4.9
52 km SW of Puerto Madero, Mexico
16:11 UTC · 53.0 km deep
4.7
South Sandwich Islands region
09:33 UTC · 133.0 km deep
4.7
60 km SW of Jipijapa, Ecuador
03:54 UTC · 10.0 km deep
4.7
northern Mid-Atlantic Ridge
03:00 UTC · 10.0 km deep
Earthquake Map — September 16, 2025
All Earthquakes — September 16, 2025
Showing 30 of 64 (filtered from 176)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-09-16 2025-09-16 23:53:09 UTC | 4.4mb | 33 km NNE of Mejillones, Chile -22.811°, -70.367° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 33 km NNE of Mejillones, Chile on September 16, 2025 at 23:53 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 23:49:39 UTC | 2.0ml | 65 km ESE of Egegik, Alaska 58.071°, -156.300° | 8.3 km | - | - | - | Auto | USGS → |
A magnitude 2.0 seismic event took place 65 km ESE of Egegik, Alaska on September 16, 2025 at 23:49 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 23:06:19 UTC | 2.1ml | 9 km S of Princeton, Canada 49.376°, -120.515° | -0.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 9 km S of Princeton, Canada on September 16, 2025 at 23:06 UTC. 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. | ||||||||
2025-09-16 2025-09-16 22:15:53 UTC | 2.6ml | 14 km NNW of Ambler, Alaska 67.214°, -157.922° | 0.1 km | - | - | - | Auto | USGS → |
This magnitude 2.6 event was detected 14 km NNW of Ambler, Alaska on September 16, 2025, with origin time 22:15 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 22:05:43 UTC | 2.3md | 5 km WNW of Chester, CA 40.329°, -121.280° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
On September 16, 2025 at 22:05 UTC, a magnitude 2.3 earthquake struck 5 km WNW of Chester, CA. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 22:03:55 UTC | 2.2ml | 62 km ENE of San Vicente, Mexico 31.473°, -115.608° | 13.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 62 km ENE of San Vicente, Mexico on September 16, 2025 at 22:03 UTC. It arrived roughly 14 hours after a larger magnitude 2.9 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 21:33:59 UTC | 4.4mb | 52 km ESE of Shimoda, Japan 34.486°, 139.466° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 52 km ESE of Shimoda, Japan with origin time 21:33 UTC on September 16, 2025. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 21:22:06 UTC | 4.1mb | 37 km WNW of Ollagüe, Chile -21.124°, -68.603° | 130.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 37 km WNW of Ollagüe, Chile with origin time 21:22 UTC on September 16, 2025. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 20:59:08 UTC | 3.0ml | 55 km NE of Valmy, Nevada 41.167°, -116.693° | 10.6 km | - | II | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.0 earthquake 55 km NE of Valmy, Nevada with origin time 20:59 UTC on September 16, 2025. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 20:56:59 UTC | 4.0mb | 18 km NE of Mollendo, Peru -16.902°, -71.889° | 133.3 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.0 earthquake 18 km NE of Mollendo, Peru at 20:56 UTC on September 16, 2025. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 19:10:30 UTC | 4.5mb | Rat Islands, Aleutian Islands, Alaska 51.705°, 178.150° | 113.1 km | - | II | - | ✓ Reviewed | USGS → |
September 16, 2025 brought a magnitude 4.5 earthquake near Rat Islands, Aleutian Islands, Alaska, logged at 19:10 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 19:07:02 UTC | 3.4ml | 22 km SE of Wright, Wyoming 43.598°, -105.314° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
September 16, 2025 brought a magnitude 3.4 earthquake 22 km SE of Wright, Wyoming, logged at 19:07 UTC. 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. | ||||||||
2025-09-16 2025-09-16 18:19:05 UTC | 2.0ml | 55 km NE of Valmy, Nevada 41.168°, -116.685° | 12.3 km | - | - | - | ✓ Reviewed | USGS → |
September 16, 2025 brought a magnitude 2.0 earthquake 55 km NE of Valmy, Nevada, logged at 18:19 UTC. Coming 13 hours after a magnitude 2.4 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. | ||||||||
2025-09-16 2025-09-16 18:13:04 UTC | 2.0ml | 23 km SW of Bandera, Texas 29.553°, -99.218° | 6.3 km | - | - | - | ✓ Reviewed | USGS → |
On September 16, 2025 at 18:13 UTC, a magnitude 2.0 earthquake struck 23 km SW of Bandera, Texas. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 17:42:13 UTC | 2.3md | 22 km SW of Toms Place, CA 37.427°, -118.857° | 8.8 km | - | - | - | ✓ Reviewed | USGS → |
On September 16, 2025, worldwide seismic activity registered a magnitude 2.3 earthquake 22 km SW of Toms Place, CA at 17:42 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 16:59:46 UTC | 6.0mww | 208 km SE of Kokopo, Papua New Guinea -5.518°, 153.735° | 31.0 km | - | IV | green | ✓ Reviewed | USGS → |
On September 16, 2025 at 16:59 UTC, a magnitude 6.0 earthquake struck 208 km SE of Kokopo, Papua New Guinea. 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 September 16, 2025. See the M6.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 16:56:34 UTC | 2.8ml | 33 km WNW of Akhiok, Alaska 57.035°, -154.695° | 6.9 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.8 earthquake 33 km WNW of Akhiok, Alaska at 16:56 UTC on September 16, 2025. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 16:53:10 UTC | 2.3md | 33 km W of Petrolia, CA 40.329°, -124.674° | 22.0 km | - | - | - | ✓ Reviewed | USGS → |
At 16:53 UTC on September 16, 2025, a magnitude 2.3 tremor occurred 33 km W of Petrolia, CA. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 16:11:25 UTC | 4.9mww | 52 km SW of Puerto Madero, Mexico 14.419°, -92.801° | 53.0 km | - | - | - | ✓ Reviewed | USGS → |
At 16:11 UTC on September 16, 2025, a magnitude 4.9 tremor occurred 52 km SW of Puerto Madero, Mexico. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 16:05:37 UTC | 2.5ml | 47 km ESE of Beatty, Nevada 36.768°, -116.260° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 47 km ESE of Beatty, Nevada came in on September 16, 2025 at 16:05 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 15:47:01 UTC | 3.7ml | 44 km NE of Pedro Bay, Alaska 60.017°, -153.457° | 143.8 km | - | III | - | ✓ Reviewed | USGS → |
A magnitude 3.7 seismic event took place 44 km NE of Pedro Bay, Alaska on September 16, 2025 at 15:47 UTC. A tsunami evaluation was automatically initiated given the magnitude and location. The event was offshore. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 14:45:46 UTC | 2.3md | 6 km SE of Maria Antonia, Puerto Rico 17.941°, -66.844° | 10.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 6 km SE of Maria Antonia, Puerto Rico at 14:45 UTC on September 16, 2025. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 14:30:11 UTC | 4.0mb | Bonin Islands, Japan region 27.275°, 140.310° | 320.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.0 event was detected in the Bonin Islands, Japan region on September 16, 2025, with origin time 14:30 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 14:00:40 UTC | 2.0ml | 70 km S of Shungnak, Alaska 66.259°, -157.188° | 0.0 km | - | - | - | Auto | USGS → |
A magnitude 2.0 earthquake was recorded 70 km S of Shungnak, Alaska on September 16, 2025 at 14:00 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. | ||||||||
2025-09-16 2025-09-16 13:53:17 UTC | 4.1mb | 117 km E of Petropavlovsk-Kamchatsky, Russia 53.276°, 160.353° | 45.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 16, 2025, worldwide seismic activity registered a magnitude 4.1 earthquake 117 km E of Petropavlovsk-Kamchatsky, Russia at 13:53 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 13:11:52 UTC | 2.2ml | 3 km N of Little America, Wyoming 41.573°, -109.858° | -2.6 km | 1 | - | - | ✓ Reviewed | USGS → |
On September 16, 2025 at 13:11 UTC, a magnitude 2.2 earthquake struck 3 km N of Little America, Wyoming. This is the shallowest earthquake in the current dataset — a shallow crustal event. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 13:04:54 UTC | 4.0mb | 123 km SSE of Sand Point, Alaska 54.367°, -159.577° | 25.4 km | - | II | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.0 earthquake 123 km SSE of Sand Point, Alaska came in on September 16, 2025 at 13:04 UTC. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 12:13:27 UTC | 4.3mb | 145 km ESE of Petropavlovsk-Kamchatsky, Russia 52.778°, 160.740° | 32.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 145 km ESE of Petropavlovsk-Kamchatsky, Russia came in on September 16, 2025 at 12:13 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 11:55:57 UTC | 4.2mwr | 213 km S of Unalaska, Alaska 51.973°, -166.079° | 10.0 km | - | I | - | ✓ Reviewed | USGS → |
September 16, 2025 brought a magnitude 4.2 earthquake 213 km S of Unalaska, Alaska, logged at 11:55 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-16 2025-09-16 11:39:55 UTC | 2.3md | 11 km SSW of Tres Pinos, CA 36.705°, -121.377° | 3.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 11 km SSW of Tres Pinos, CA on September 16, 2025, with origin time 11:39 UTC. 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. | ||||||||
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 September 16, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.