Earthquakes on September 1, 2026
282
EARTHQUAKES on September 1, 2026
24-hour UTC period · USGS data
LARGEST: M5.6 — 82 km SE of Maba, Indonesia
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
4
M4.0–4.9
25
M3.0–3.9
26
M2.0–2.9
53
M1.0–1.9
174
Activity Summary
282
Total earthquakes
~250
Daily average
Normal
Activity level
4
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.6
82 km SE of Maba, Indonesia
08:22 UTC · 10.0 km deep
5.3
89 km SSW of Nikolski, Alaska
06:44 UTC · 26.0 km deep
Felt by 3
5.2
44 km SE of Sarangani, Philippines
13:22 UTC · 113.1 km deep
Felt by 11
5.0
110 km SSE of Isangel, Vanuatu
18:37 UTC · 122.7 km deep
4.9
50 km NNE of Ruteng, Indonesia
18:11 UTC · 10.0 km deep
4.9
117 km WNW of Pangai, Tonga
10:34 UTC · 198.1 km deep
4.8
292 km WNW of Houma, Tonga
01:29 UTC · 533.0 km deep
4.7
Mid-Indian Ridge
22:42 UTC · 10.0 km deep
Earthquake Map — September 1, 2026
All Earthquakes — September 1, 2026
Showing 30 of 108 (filtered from 282)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2026-09-01 2026-09-01 23:46:31 UTC | 4.5mb | south of the Fiji Islands -25.242°, -179.629° | 525.8 km | - | - | - | ✓ Reviewed | USGS → |
At 23:46 UTC on September 1, 2026, a magnitude 4.5 tremor occurred south of the Fiji Islands. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 23:45:23 UTC | 4.6mb | Mid-Indian Ridge -13.177°, 66.642° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place near Mid-Indian Ridge on September 1, 2026 at 23:45 UTC. Coming 1 hours after a magnitude 4.7 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 23:41:51 UTC | 2.3ml | 84 km NW of Karluk, Alaska 58.181°, -155.307° | 2.2 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 84 km NW of Karluk, Alaska at 23:41 UTC on September 1, 2026. 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. | ||||||||
2026-09-01 2026-09-01 23:39:01 UTC | 4.0mb | 16 km N of Shamakhi, Azerbaijan 40.776°, 48.632° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 seismic event took place 16 km N of Shamakhi, Azerbaijan on September 1, 2026 at 23:39 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 23:34:35 UTC | 2.1md | 7 km SSE of Guánica, Puerto Rico 17.908°, -66.874° | 16.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 7 km SSE of Guánica, Puerto Rico on September 1, 2026 at 23:34 UTC. Coming 19 hours after a magnitude 2.5 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. | ||||||||
2026-09-01 2026-09-01 23:24:38 UTC | 4.2mb | 23 km ESE of Miyazaki, Japan 31.872°, 131.655° | 53.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 23 km ESE of Miyazaki, Japan on September 1, 2026 at 23:24 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 23:18:16 UTC | 2.1ml | 48 km SSW of Nanwalek, Alaska 58.971°, -152.319° | 58.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 48 km SSW of Nanwalek, Alaska on September 1, 2026 at 23:18 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 23:13:01 UTC | 2.5ml | 121 km WSW of Adak, Alaska 51.393°, -178.203° | 51.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 121 km WSW of Adak, Alaska came in on September 1, 2026 at 23:13 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 23:00:52 UTC | 2.0ml | 47 km WSW of Akhiok, Alaska 56.860°, -154.942° | 3.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 47 km WSW of Akhiok, Alaska on September 1, 2026 at 23:00 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. | ||||||||
2026-09-01 2026-09-01 22:42:09 UTC | 4.7mb | Mid-Indian Ridge -13.114°, 66.592° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.7 earthquake near Mid-Indian Ridge came in on September 1, 2026 at 22:42 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:37:43 UTC | 4.6mb | Mid-Indian Ridge -13.186°, 66.525° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
September 1, 2026 brought a magnitude 4.6 earthquake near Mid-Indian Ridge, logged at 22:37 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:33:13 UTC | 3.5ml | 102 km SSW of Nikolski, Alaska 52.063°, -169.347° | 10.0 km | - | I | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.5 earthquake 102 km SSW of Nikolski, Alaska came in on September 1, 2026 at 22:33 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.3 earthquake that occurred about 16 hours earlier. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:16:40 UTC | 3.6mb | 66 km SSW of Nikolski, Alaska 52.407°, -169.293° | 35.0 km | - | II | - | ✓ Reviewed | USGS → |
A magnitude 3.6 earthquake was recorded 66 km SSW of Nikolski, Alaska on September 1, 2026 at 22:16 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 8 hours earlier. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:10:37 UTC | 2.1ml | 5 km SE of Houston, Alaska 61.596°, -149.743° | 33.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 5 km SE of Houston, Alaska with origin time 22:10 UTC on September 1, 2026. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:04:07 UTC | 2.8ml | 109 km SSW of Nikolski, Alaska 51.980°, -169.200° | 13.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.8 earthquake 109 km SSW of Nikolski, Alaska came in on September 1, 2026 at 22:04 UTC. It arrived roughly 15 hours after a larger magnitude 4.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:02:58 UTC | 2.3ml | 113 km SSE of Ugashik, Alaska 56.626°, -156.462° | 73.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 113 km SSE of Ugashik, Alaska on September 1, 2026, with origin time 22:02 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 2 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:02:52 UTC | 2.3ml | 40 km NNW of Beluga, Alaska 61.452°, -151.468° | 78.9 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 40 km NNW of Beluga, Alaska came in on September 1, 2026 at 22:02 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 21:25:07 UTC | 2.2md | 5 km WSW of Guánica, Puerto Rico 17.947°, -66.956° | 10.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 5 km WSW of Guánica, Puerto Rico came in on September 1, 2026 at 21:25 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 21:09:17 UTC | 2.4ml | 21 km S of Weston, Colorado 36.940°, -104.882° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 21 km S of Weston, Colorado on September 1, 2026 at 21:09 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 21:07:04 UTC | 2.0ml | 71 km ESE of Ugashik, Alaska 57.170°, -156.386° | 76.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 71 km ESE of Ugashik, Alaska with origin time 21:07 UTC on September 1, 2026. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 20:47:10 UTC | 4.4mb | 103 km SSW of Nikolski, Alaska 52.042°, -169.287° | 10.0 km | - | II | green | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 103 km SSW of Nikolski, Alaska on September 1, 2026 at 20:47 UTC. It arrived roughly 13 hours after a larger magnitude 4.5 mainshock in the same 20 km area, placing it within the typical aftershock window. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 20:24:28 UTC | 2.6ml | 157 km ESE of McCarthy, Alaska 60.988°, -140.145° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 1, 2026, worldwide seismic activity registered a magnitude 2.6 earthquake 157 km ESE of McCarthy, Alaska at 20:24 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 20:19:31 UTC | 2.9ml | 119 km SSE of Ugashik, Alaska 56.606°, -156.354° | 56.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.9 earthquake 119 km SSE of Ugashik, Alaska at 20:19 UTC on September 1, 2026. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 20:12:40 UTC | 2.8ml | 56 km ESE of Atka, Alaska 52.042°, -173.408° | 11.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.8 seismic event took place 56 km ESE of Atka, Alaska on September 1, 2026 at 20:12 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 20:05:12 UTC | 2.6ml | 159 km SE of Nikolski, Alaska 52.039°, -167.028° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:05 UTC on September 1, 2026, a magnitude 2.6 tremor occurred 159 km SE of Nikolski, Alaska. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 19:47:22 UTC | 2.1ml | 8 km ESE of Molalla, Oregon 45.115°, -122.483° | -0.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 8 km ESE of Molalla, Oregon on September 1, 2026 at 19:47 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. | ||||||||
2026-09-01 2026-09-01 19:29:09 UTC | 2.0ml | 5 km NNE of Susitna, Alaska 61.588°, -150.471° | 59.5 km | - | - | - | ✓ Reviewed | USGS → |
On September 1, 2026, worldwide seismic activity registered a magnitude 2.0 earthquake 5 km NNE of Susitna, Alaska at 19:29 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 19:23:08 UTC | 2.8ml | 12 km SW of Falls City, Texas 28.891°, -98.093° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
September 1, 2026 brought a magnitude 2.8 earthquake 12 km SW of Falls City, Texas, logged at 19:23 UTC. Coming 5 hours after a magnitude 3.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 19:21:21 UTC | 4.6mb | 75 km ENE of Mutsu, Japan 41.594°, 142.031° | 62.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 1, 2026 at 19:21 UTC, a magnitude 4.6 earthquake struck 75 km ENE of Mutsu, Japan. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 19:11:27 UTC | 2.1ml | 54 km W of Cantwell, Alaska 63.328°, -150.028° | 107.8 km | - | - | - | ✓ Reviewed | USGS → |
On September 1, 2026, worldwide seismic activity registered a magnitude 2.1 earthquake 54 km W of Cantwell, Alaska at 19:11 UTC. The event was offshore. 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 1, 2026. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.