Earthquakes on September 4, 2026
260
EARTHQUAKES on September 4, 2026
24-hour UTC period · USGS data
32 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
7
M4.0–4.9
11
M3.0–3.9
29
M2.0–2.9
82
M1.0–1.9
131
Activity Summary
260
Total earthquakes
~250
Daily average
Normal
Activity level
7
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.5
168 km ESE of Kuril’sk, Russia
23:52 UTC · 32.0 km deep
5.4
Kermadec Islands region
11:59 UTC · 10.0 km deep
5.2
28 km S of Cilacap, Indonesia
05:04 UTC · 10.0 km deep
Felt by 5
5.1
central Mid-Atlantic Ridge
23:38 UTC · 10.0 km deep
5.1
23 km WSW of Padangsidempuan, Indonesia
16:24 UTC · 122.0 km deep
5.0
South Sandwich Islands region
06:45 UTC · 10.0 km deep
5.0
236 km ESE of Attu Station, Alaska
02:28 UTC · 10.0 km deep
4.9
south of the Fiji Islands
13:47 UTC · 100.7 km deep
Earthquake Map — September 4, 2026
All Earthquakes — September 4, 2026
Showing 30 of 129 (filtered from 260)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2026-09-04 2026-09-04 23:54:25 UTC | 2.7ml | Rat Islands, Aleutian Islands, Alaska 51.348°, 179.058° | 57.5 km | - | - | - | ✓ Reviewed | USGS → |
September 4, 2026 brought a magnitude 2.7 earthquake near Rat Islands, Aleutian Islands, Alaska, logged at 23:54 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 23:52:29 UTC | 5.5mww | 168 km ESE of Kuril’sk, Russia 44.942°, 149.984° | 32.0 km | - | III | green | ✓ Reviewed | USGS → |
On September 4, 2026 at 23:52 UTC, a magnitude 5.5 earthquake struck 168 km ESE of Kuril’sk, Russia. 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 4, 2026. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 23:38:40 UTC | 5.1mww | central Mid-Atlantic Ridge 9.467°, -40.847° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 4, 2026, worldwide seismic activity registered a magnitude 5.1 earthquake near central Mid-Atlantic Ridge at 23:38 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 23:37:18 UTC | 2.9md | 65 km N of Tierras Nuevas Poniente, Puerto Rico 19.052°, -66.454° | 11.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 65 km N of Tierras Nuevas Poniente, Puerto Rico came in on September 4, 2026 at 23:37 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 23:33:01 UTC | 2.0ml | 33 km WSW of Mentone, Texas 31.600°, -103.934° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 4, 2026, worldwide seismic activity registered a magnitude 2.0 earthquake 33 km WSW of Mentone, Texas at 23:33 UTC. It arrived roughly 19 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 23:31:40 UTC | 2.7ml | 20 km S of South Van Horn, Alaska 64.623°, -147.744° | 18.2 km | 20 | - | - | ✓ Reviewed | USGS → |
On September 4, 2026 at 23:31 UTC, a magnitude 2.7 earthquake struck 20 km S of South Van Horn, Alaska. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 23:23:26 UTC | 2.5ml | 7 km WNW of Nikiski, Alaska 60.727°, -151.413° | 76.8 km | 1 | - | - | ✓ Reviewed | USGS → |
September 4, 2026 brought a magnitude 2.5 earthquake 7 km WNW of Nikiski, Alaska, logged at 23:23 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 23:17:48 UTC | 4.5mb | 38 km NNE of Ruteng, Indonesia -8.300°, 120.613° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 4, 2026 at 23:17 UTC, a magnitude 4.5 earthquake struck 38 km NNE of Ruteng, Indonesia. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 23:14:17 UTC | 2.5ml | 56 km S of Whites City, New Mexico 31.667°, -104.370° | 6.9 km | - | - | - | ✓ Reviewed | USGS → |
On September 4, 2026 at 23:14 UTC, a magnitude 2.5 earthquake struck 56 km S of Whites City, New Mexico. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 22:39:35 UTC | 2.0ml | 20 km S of Denali National Park, Alaska 63.357°, -151.768° | 1.2 km | - | - | - | ✓ Reviewed | USGS → |
At 22:39 UTC on September 4, 2026, a magnitude 2.0 tremor occurred 20 km S of Denali National Park, 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. | ||||||||
2026-09-04 2026-09-04 22:30:29 UTC | 2.1ml | 9 km S of Honaunau-Napoopoo, Hawaii 19.375°, -155.851° | 17.4 km | 1 | - | - | ✓ Reviewed | USGS → |
On September 4, 2026 at 22:30 UTC, a magnitude 2.1 earthquake struck 9 km S of Honaunau-Napoopoo, Hawaii. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 22:22:17 UTC | 2.1ml | 56 km S of Whites City, New Mexico 31.669°, -104.367° | 6.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 56 km S of Whites City, New Mexico on September 4, 2026 at 22:22 UTC. It arrived roughly 12 hours after a larger magnitude 2.2 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. | ||||||||
2026-09-04 2026-09-04 21:15:42 UTC | 2.2ml | 65 km ESE of Cantwell, Alaska 63.178°, -147.731° | 1.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 65 km ESE of Cantwell, Alaska at 21:15 UTC on September 4, 2026. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 21:10:32 UTC | 4.2mb | 35 km S of Acajutla, El Salvador 13.276°, -89.841° | 42.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 35 km S of Acajutla, El Salvador on September 4, 2026, with origin time 21:10 UTC. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 20:55:54 UTC | 2.4ml | 86 km E of Akutan, Alaska 54.063°, -164.464° | 16.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 86 km E of Akutan, Alaska at 20:55 UTC on September 4, 2026. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 20:53:29 UTC | 4.3mb | 12 km S of Cabcaben, Philippines 14.339°, 120.598° | 156.1 km | 1 | - | - | ✓ Reviewed | USGS → |
On September 4, 2026, worldwide seismic activity registered a magnitude 4.3 earthquake 12 km S of Cabcaben, Philippines at 20:53 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 19:49:04 UTC | 3.5ml | 184 km SE of Perryville, Alaska 54.796°, -156.983° | 28.5 km | - | I | - | ✓ Reviewed | USGS → |
At 19:49 UTC on September 4, 2026, a magnitude 3.5 tremor occurred 184 km SE of Perryville, Alaska. The event was offshore. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 19:46:45 UTC | 2.3ml | 77 km N of White Mountain, Alaska 65.365°, -163.141° | 16.2 km | - | - | - | ✓ Reviewed | USGS → |
On September 4, 2026, worldwide seismic activity registered a magnitude 2.3 earthquake 77 km N of White Mountain, Alaska at 19:46 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 19:40:20 UTC | 2.6ml | 20 km WSW of Port Lions, Alaska 57.795°, -153.208° | 42.0 km | - | - | - | ✓ Reviewed | USGS → |
September 4, 2026 brought a magnitude 2.6 earthquake 20 km WSW of Port Lions, Alaska, logged at 19:40 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 18:34:01 UTC | 4.6mwr | 28 km NW of Raumati Beach, New Zealand -40.731°, 174.756° | 48.8 km | 27 | - | - | ✓ Reviewed | USGS → |
September 4, 2026 brought a magnitude 4.6 earthquake 28 km NW of Raumati Beach, New Zealand, logged at 18:34 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 18:20:06 UTC | 2.1md | 11 km NE of Pāhala, Hawaii 19.271°, -155.396° | 28.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 11 km NE of Pāhala, Hawaii came in on September 4, 2026 at 18:20 UTC. It arrived roughly 6 hours after a larger magnitude 3.5 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. | ||||||||
2026-09-04 2026-09-04 17:57:40 UTC | 3.0ml | 78 km ENE of Ugashik, Alaska 57.811°, -156.199° | 131.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 4, 2026 at 17:57 UTC, a magnitude 3.0 earthquake struck 78 km ENE of Ugashik, Alaska. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 17:31:27 UTC | 2.3md | 2 km N of The Geysers, CA 38.792°, -122.759° | 1.9 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.3 earthquake 2 km N of The Geysers, CA with origin time 17:31 UTC on September 4, 2026. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 17:29:21 UTC | 2.6ml | 86 km SSW of Nikolski, Alaska 52.269°, -169.505° | 24.8 km | - | - | - | ✓ Reviewed | USGS → |
On September 4, 2026 at 17:29 UTC, a magnitude 2.6 earthquake struck 86 km SSW of Nikolski, Alaska. Coming 3 hours after a magnitude 3.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 17:27:34 UTC | 2.6ml | 84 km SW of Nikolski, Alaska 52.491°, -169.873° | 24.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 84 km SW of Nikolski, Alaska on September 4, 2026 at 17:27 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 17:01:54 UTC | 2.8ml | 48 km SSW of Ugashik, Alaska 57.111°, -157.702° | 2.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 48 km SSW of Ugashik, Alaska on September 4, 2026, with origin time 17:01 UTC. 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. | ||||||||
2026-09-04 2026-09-04 16:39:19 UTC | 3.0ml | Rat Islands, Aleutian Islands, Alaska 50.103°, 179.418° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.0 earthquake was recorded near Rat Islands, Aleutian Islands, Alaska on September 4, 2026 at 16:39 UTC. Coming 1 hours after a magnitude 3.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 16:33:04 UTC | 3.3ml | Rat Islands, Aleutian Islands, Alaska 50.167°, 179.521° | 10.0 km | - | I | - | ✓ Reviewed | USGS → |
A magnitude 3.3 seismic event took place near Rat Islands, Aleutian Islands, Alaska on September 4, 2026 at 16:33 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 16:24:40 UTC | 5.1mb | 23 km WSW of Padangsidempuan, Indonesia 1.302°, 99.078° | 122.0 km | - | - | - | ✓ Reviewed | USGS → |
At 16:24 UTC on September 4, 2026, a magnitude 5.1 tremor occurred 23 km WSW of Padangsidempuan, Indonesia. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-04 2026-09-04 16:07:25 UTC | 2.1ml | 98 km N of Yakutat, Alaska 60.423°, -139.537° | 0.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 98 km N of Yakutat, Alaska with origin time 16:07 UTC on September 4, 2026. 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. | ||||||||
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 4, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.