Earthquakes on September 28, 2025
233
EARTHQUAKES on September 28, 2025
24-hour UTC period · USGS data
LARGEST: M5.5 — south of the Fiji Islands
574 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
35
M3.0–3.9
14
M2.0–2.9
45
M1.0–1.9
135
Activity Summary
233
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Significant Earthquakes (M4.5+)
5.5
south of the Fiji Islands
08:53 UTC · 573.6 km deep
5.2
121 km SSE of Lata, Solomon Islands
18:41 UTC · 68.0 km deep
Felt by 1
5.2
16 km NNW of Simav, Turkey
09:59 UTC · 10.0 km deep
Felt by 27
5.0
142 km E of Petropavlovsk-Kamchatsky, Russia
14:25 UTC · 38.6 km deep
4.6
22 km W of Emet, Turkey
22:48 UTC · 10.0 km deep
Felt by 1
4.6
46 km W of Ollagüe, Chile
05:25 UTC · 118.0 km deep
4.6
80 km S of Severo-Kuril’sk, Russia
02:37 UTC · 86.7 km deep
4.5
35 km ESE of Yonakuni, Japan
21:23 UTC · 58.0 km deep
Earthquake Map — September 28, 2025
All Earthquakes — September 28, 2025
Showing 30 of 98 (filtered from 233)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-09-28 2025-09-28 23:57:41 UTC | 4.3mb | 70 km S of San Jose Village, Northern Mariana Islands 14.333°, 145.618° | 108.5 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2025, worldwide seismic activity registered a magnitude 4.3 earthquake 70 km S of San Jose Village, Northern Mariana Islands at 23:57 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 23:42:29 UTC | 3.8md | 105 km NNE of Cruz Bay, U.S. Virgin Islands 19.221°, -64.428° | 66.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.8 earthquake was recorded 105 km NNE of Cruz Bay, U.S. Virgin Islands on September 28, 2025 at 23:42 UTC. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 23:11:28 UTC | 4.4mb | 161 km SW of Merizo Village, Guam 12.249°, 143.607° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 161 km SW of Merizo Village, Guam with origin time 23:11 UTC on September 28, 2025. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 23:06:42 UTC | 2.8ml | 28 km N of Chalkyitsik, Alaska 66.913°, -143.745° | 13.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.8 earthquake 28 km N of Chalkyitsik, Alaska at 23:06 UTC on September 28, 2025. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 22:48:30 UTC | 4.6mwr | 22 km W of Emet, Turkey 39.378°, 29.005° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 22:48 UTC on September 28, 2025, a magnitude 4.6 tremor occurred 22 km W of Emet, Turkey. This event falls inside the aftershock decay of a nearby magnitude 5.2 earthquake that occurred about 13 hours earlier. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 22:32:05 UTC | 4.4mb | 147 km ESE of Petropavlovsk-Kamchatsky, Russia 52.554°, 160.645° | 34.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2025, worldwide seismic activity registered a magnitude 4.4 earthquake 147 km ESE of Petropavlovsk-Kamchatsky, Russia at 22:32 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.5 earthquake that occurred about 8 hours earlier. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 22:18:34 UTC | 4.4mb | 33 km SW of Port-Vila, Vanuatu -17.952°, 168.095° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:18 UTC on September 28, 2025, a magnitude 4.4 tremor occurred 33 km SW of Port-Vila, Vanuatu. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 21:31:07 UTC | 4.2mb | 68 km W of La Ligua, Chile -32.347°, -71.953° | 30.2 km | 1 | - | - | ✓ Reviewed | USGS → |
On September 28, 2025 at 21:31 UTC, a magnitude 4.2 earthquake struck 68 km W of La Ligua, Chile. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 21:23:51 UTC | 4.5mwr | 35 km ESE of Yonakuni, Japan 24.347°, 123.323° | 58.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.5 earthquake 35 km ESE of Yonakuni, Japan came in on September 28, 2025 at 21:23 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 21:12:37 UTC | 2.1md | 2 km NNE of Danville, CA 37.843°, -121.997° | 9.1 km | 1 | - | - | Auto | USGS → |
September 28, 2025 brought a magnitude 2.1 earthquake 2 km NNE of Danville, CA, logged at 21:12 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:58:27 UTC | 2.4ml | 13 km SW of Karluk, Alaska 57.474°, -154.603° | 64.8 km | - | - | - | Auto | USGS → |
A magnitude 2.4 seismic event took place 13 km SW of Karluk, Alaska on September 28, 2025 at 20:58 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:54:40 UTC | 2.4ml | 11 km NE of Lyman, Wyoming 41.400°, -110.189° | 41.9 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 11 km NE of Lyman, Wyoming came in on September 28, 2025 at 20:54 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:53:18 UTC | 4.4mwr | 34 km SW of Camiña, Chile -19.519°, -69.678° | 17.8 km | 20 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 34 km SW of Camiña, Chile at 20:53 UTC on September 28, 2025. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:37:12 UTC | 2.1ml | 57 km E of Port Alsworth, Alaska 60.169°, -153.276° | 145.2 km | - | - | - | Auto | USGS → |
On September 28, 2025 at 20:37 UTC, a magnitude 2.1 earthquake struck 57 km E of Port Alsworth, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:31:13 UTC | 3.8mb | 103 km S of Adak, Alaska 50.959°, -176.904° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2025 at 20:31 UTC, a magnitude 3.8 earthquake struck 103 km S of Adak, Alaska. The event was offshore. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:12:43 UTC | 2.0ml | 1 km ENE of Minco, Oklahoma 35.321°, -97.929° | 7.3 km | 1 | - | - | ✓ Reviewed | USGS → |
On September 28, 2025 at 20:12 UTC, a magnitude 2.0 earthquake struck 1 km ENE of Minco, Oklahoma. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:12:39 UTC | 2.1ml | 54 km NE of Valmy, Nevada 41.171°, -116.723° | 10.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 54 km NE of Valmy, Nevada on September 28, 2025 at 20:12 UTC. It arrived roughly 3 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:06:05 UTC | 3.1md | 55 km NNE of Vieques, Puerto Rico 18.857°, -65.566° | 53.2 km | - | - | - | ✓ Reviewed | USGS → |
On September 28, 2025 at 20:06 UTC, a magnitude 3.1 earthquake struck 55 km NNE of Vieques, Puerto Rico. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:03:56 UTC | 2.7md | 19 km N of Hatillo, Puerto Rico 18.660°, -66.804° | 13.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake 19 km N of Hatillo, Puerto Rico came in on September 28, 2025 at 20:03 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 20:02:47 UTC | 3.0ml | 66 km NNE of Petersville, Alaska 63.077°, -150.465° | 102.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.0 earthquake was recorded 66 km NNE of Petersville, Alaska on September 28, 2025 at 20:02 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 19:21:45 UTC | 3.5ml | 32 km ENE of Pedro Bay, Alaska 59.845°, -153.545° | 130.1 km | - | III | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.5 earthquake 32 km ENE of Pedro Bay, Alaska at 19:21 UTC on September 28, 2025. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 19:21:00 UTC | 2.0ml | 12 km SW of Susitna, Alaska 61.453°, -150.653° | 41.6 km | - | - | - | Auto | USGS → |
A magnitude 2.0 earthquake was recorded 12 km SW of Susitna, Alaska on September 28, 2025 at 19:21 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 19:13:09 UTC | 4.4mb | 56 km NE of Cabatuan, Philippines 12.850°, 125.619° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 56 km NE of Cabatuan, Philippines on September 28, 2025, with origin time 19:13 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 19:06:15 UTC | 2.1ml | 51 km NE of Valmy, Nevada 41.149°, -116.735° | 9.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 51 km NE of Valmy, Nevada with origin time 19:06 UTC on September 28, 2025. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 2 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 18:57:43 UTC | 4.2mb | 111 km ENE of Petropavlovsk-Kamchatsky, Russia 53.620°, 160.020° | 68.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 111 km ENE of Petropavlovsk-Kamchatsky, Russia on September 28, 2025 at 18:57 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 18:41:23 UTC | 5.2mww | 121 km SSE of Lata, Solomon Islands -11.687°, 166.329° | 68.0 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 5.2 earthquake was recorded 121 km SSE of Lata, Solomon Islands on September 28, 2025 at 18:41 UTC. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 18:40:03 UTC | 2.3ml | 25 km N of Spencer, Idaho 44.587°, -112.222° | 10.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 25 km N of Spencer, Idaho on September 28, 2025 at 18:40 UTC. Coming 2 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 18:04:57 UTC | 2.4ml | 56 km E of Maneadero, B.C., MX 31.715°, -115.977° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
September 28, 2025 brought a magnitude 2.4 earthquake 56 km E of Maneadero, B.C., MX, logged at 18:04 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 17:44:43 UTC | 4.2mb | Fiji region -13.535°, 176.360° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake in the Fiji region with origin time 17:44 UTC on September 28, 2025. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-28 2025-09-28 17:21:20 UTC | 4.5mb | 109 km WNW of Abepura, Indonesia -2.186°, 139.740° | 27.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place 109 km WNW of Abepura, Indonesia on September 28, 2025 at 17:21 UTC. See the M4.5 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 28, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.