Earthquakes on September 25, 2023
291
EARTHQUAKES on September 25, 2023
24-hour UTC period · USGS data
LARGEST: M4.9 — South Sandwich Islands region
156 km deep · 1 person felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
0
M4.0–4.9
35
M3.0–3.9
15
M2.0–2.9
52
M1.0–1.9
189
Activity Summary
291
Total earthquakes
~250
Daily average
Normal
Activity level
0
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
4.9
South Sandwich Islands region
04:12 UTC · 156.2 km deep
Felt by 1
4.8
280 km ENE of Lospalos, Timor Leste
05:11 UTC · 177.1 km deep
4.7
Banda Sea
15:48 UTC · 90.5 km deep
4.7
south of the Fiji Islands
05:21 UTC · 98.0 km deep
4.6
South Sandwich Islands region
22:43 UTC · 10.4 km deep
4.6
South Sandwich Islands region
16:36 UTC · 82.1 km deep
4.6
48 km S of Champerico, Guatemala
06:57 UTC · 35.0 km deep
4.6
42 km S of Lambaréné, Gabon
01:28 UTC · 10.0 km deep
Earthquake Map — September 25, 2023
All Earthquakes — September 25, 2023
Showing 30 of 102 (filtered from 291)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-09-25 2023-09-25 23:48:33 UTC | 2.2md | 8 km SE of Maria Antonia, Puerto Rico 17.919°, -66.842° | 10.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 8 km SE of Maria Antonia, Puerto Rico at 23:48 UTC on September 25, 2023. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 22 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 23:39:21 UTC | 4.5mwr | 9 km SSE of Higashimatsushima, Japan 38.327°, 141.218° | 75.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 seismic event took place 9 km SSE of Higashimatsushima, Japan on September 25, 2023 at 23:39 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 23:29:31 UTC | 2.3md | 5 km SSE of Salinas, Puerto Rico 17.928°, -66.287° | 13.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 5 km SSE of Salinas, Puerto Rico on September 25, 2023, with origin time 23:29 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 23:25:07 UTC | 2.5md | 10 km SSE of Maria Antonia, Puerto Rico 17.899°, -66.838° | 11.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 10 km SSE of Maria Antonia, Puerto Rico on September 25, 2023, with origin time 23:25 UTC. It arrived roughly 22 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 23:15:11 UTC | 2.2ml | 140 km SE of Akutan, Alaska 53.117°, -164.518° | 24.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 140 km SE of Akutan, Alaska on September 25, 2023, with origin time 23:15 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 23:04:32 UTC | 4.4mb | 26 km W of Yonakuni, Japan 24.471°, 122.738° | 100.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.4 earthquake 26 km W of Yonakuni, Japan with origin time 23:04 UTC on September 25, 2023. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 23:02:26 UTC | 2.6ml | 243 km W of Adak, Alaska 51.903°, 179.829° | 144.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 243 km W of Adak, Alaska came in on September 25, 2023 at 23:02 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 22:43:42 UTC | 4.6mb | South Sandwich Islands region -60.237°, -27.848° | 10.4 km | - | - | - | ✓ Reviewed | USGS → |
At 22:43 UTC on September 25, 2023, a magnitude 4.6 tremor occurred in the South Sandwich Islands region. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 22:41:19 UTC | 2.5md | 8 km SE of Maria Antonia, Puerto Rico 17.911°, -66.842° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:41 UTC on September 25, 2023, a magnitude 2.5 tremor occurred 8 km SE of Maria Antonia, Puerto Rico. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 21 hours earlier. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 22:40:38 UTC | 2.5md | 10 km SSE of Maria Antonia, Puerto Rico 17.899°, -66.842° | 11.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 10 km SSE of Maria Antonia, Puerto Rico on September 25, 2023 at 22:40 UTC. Coming 21 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 22:40:02 UTC | 2.3md | 6 km SSW of Indios, Puerto Rico 17.939°, -66.840° | 11.3 km | - | - | - | ✓ Reviewed | USGS → |
September 25, 2023 brought a magnitude 2.3 earthquake 6 km SSW of Indios, Puerto Rico, logged at 22:40 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 21 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 21:48:06 UTC | 2.5ml | 33 km NW of Stanley, Idaho 44.459°, -115.198° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 33 km NW of Stanley, Idaho came in on September 25, 2023 at 21:48 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 19:15:56 UTC | 2.8ml | 14 km NE of Kalaoa, Hawaii 19.809°, -155.873° | -1.2 km | 2 | - | - | ✓ Reviewed | USGS → |
At 19:15 UTC on September 25, 2023, a magnitude 2.8 tremor occurred 14 km NE of Kalaoa, Hawaii. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 19:01:46 UTC | 2.0ml | 15 km SSE of Gonzales, Texas 29.372°, -97.390° | 3.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 15 km SSE of Gonzales, Texas on September 25, 2023 at 19:01 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. | ||||||||
2023-09-25 2023-09-25 18:56:28 UTC | 2.0ml | 22 km WSW of Point MacKenzie, Alaska 61.276°, -150.371° | 44.9 km | 1 | - | - | ✓ Reviewed | USGS → |
September 25, 2023 brought a magnitude 2.0 earthquake 22 km WSW of Point MacKenzie, Alaska, logged at 18:56 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 18:36:06 UTC | 4.4mb | 172 km SSE of Inarajan Village, Guam 11.747°, 145.059° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 25, 2023, worldwide seismic activity registered a magnitude 4.4 earthquake 172 km SSE of Inarajan Village, Guam at 18:36 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 18:10:31 UTC | 2.7ml | 127 km WSW of Adak, Alaska 51.514°, -178.388° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.7 earthquake 127 km WSW of Adak, Alaska at 18:10 UTC on September 25, 2023. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 18:10:11 UTC | 2.5ml | 10 km S of Wilson, Oklahoma 34.070°, -97.432° | 6.3 km | 1 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 10 km S of Wilson, Oklahoma at 18:10 UTC on September 25, 2023. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 17:54:22 UTC | 2.3md | 5 km SE of Maria Antonia, Puerto Rico 17.946°, -66.847° | 11.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 5 km SE of Maria Antonia, Puerto Rico came in on September 25, 2023 at 17:54 UTC. Coming 17 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. | ||||||||
2023-09-25 2023-09-25 17:17:25 UTC | 2.1ml | northern Alaska 65.263°, -157.987° | 8.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded near northern Alaska on September 25, 2023 at 17:17 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 17:17:17 UTC | 2.5ml | 5 km ENE of Christine, Texas 28.800°, -98.439° | 7.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 5 km ENE of Christine, Texas on September 25, 2023 at 17:17 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 17:03:19 UTC | 2.5md | 3 km SE of Palomas, Puerto Rico 17.988°, -66.854° | 11.5 km | - | - | - | ✓ Reviewed | USGS → |
September 25, 2023 brought a magnitude 2.5 earthquake 3 km SE of Palomas, Puerto Rico, logged at 17:03 UTC. It arrived roughly 16 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 17:02:46 UTC | 2.1ml | 75 km ENE of Ugashik, Alaska 57.666°, -156.170° | 4.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 75 km ENE of Ugashik, Alaska with origin time 17:02 UTC on September 25, 2023. 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. | ||||||||
2023-09-25 2023-09-25 17:02:40 UTC | 2.0ml | 74 km ENE of Ugashik, Alaska 57.664°, -156.190° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
On September 25, 2023 at 17:02 UTC, a magnitude 2.0 earthquake struck 74 km ENE of Ugashik, Alaska. 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. | ||||||||
2023-09-25 2023-09-25 16:57:38 UTC | 3.3ml | 88 km SSW of Unalaska, Alaska 53.118°, -166.946° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
September 25, 2023 brought a magnitude 3.3 earthquake 88 km SSW of Unalaska, Alaska, logged at 16:57 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 16:49:27 UTC | 2.2ml(texnet) | 57 km SSW of Whites City, New Mexico 31.678°, -104.535° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 57 km SSW of Whites City, New Mexico came in on September 25, 2023 at 16:49 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 16:47:25 UTC | 4.5mb | 16 km S of Angra do Heroísmo, Portugal 38.508°, -27.242° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
September 25, 2023 brought a magnitude 4.5 earthquake 16 km S of Angra do Heroísmo, Portugal, logged at 16:47 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 16:44:24 UTC | 4.3mb | 27 km S of São Mateus, Portugal 38.410°, -27.306° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 27 km S of São Mateus, Portugal with origin time 16:44 UTC on September 25, 2023. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 16:42:01 UTC | 2.5md | 5 km SSW of Indios, Puerto Rico 17.955°, -66.844° | 12.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 5 km SSW of Indios, Puerto Rico with origin time 16:42 UTC on September 25, 2023. It arrived roughly 15 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-09-25 2023-09-25 16:36:47 UTC | 4.6mb | South Sandwich Islands region -60.166°, -27.472° | 82.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake in the South Sandwich Islands region at 16:36 UTC on September 25, 2023. See the M4.6 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 25, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.