Earthquakes on September 1, 2026
296
EARTHQUAKES on September 1, 2026
24-hour UTC period · USGS data
LARGEST: M5.4 — 87 km SE of Maba, Indonesia
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
34
M3.0–3.9
26
M2.0–2.9
56
M1.0–1.9
174
Activity Summary
296
Total earthquakes
~250
Daily average
Normal
Activity level
6
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.4
87 km SE of Maba, Indonesia
08:22 UTC · 10.0 km deep
5.3
83 km SSW of Nikolski, Alaska
06:44 UTC · 37.1 km deep
Felt by 3
5.2
39 km SSE of Sarangani, Philippines
13:22 UTC · 110.4 km deep
Felt by 11
5.0
110 km SSE of Isangel, Vanuatu
18:37 UTC · 122.7 km deep
5.0
112 km WNW of Pangai, Tonga
10:34 UTC · 159.3 km deep
5.0
Fiji region
01:29 UTC · 536.1 km deep
4.9
50 km NNE of Ruteng, Indonesia
18:11 UTC · 10.0 km deep
4.7
Mid-Indian Ridge
23:45 UTC · 10.0 km deep
Earthquake Map — September 1, 2026
All Earthquakes — September 1, 2026
Showing 30 of 122 (filtered from 296)
(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 | 4.6mb | south of the Fiji Islands -25.267°, -179.637° | 534.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded south of the Fiji Islands on September 1, 2026 at 23:46 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 23:45:23 UTC | 4.7mb | Mid-Indian Ridge -13.176°, 66.654° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.7 earthquake near Mid-Indian Ridge came in on September 1, 2026 at 23:45 UTC. See the M4.7 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 → |
September 1, 2026 brought a magnitude 2.3 earthquake 84 km NW of Karluk, Alaska, logged at 23:41 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. | ||||||||
2026-09-01 2026-09-01 23:39:01 UTC | 4.0mb | 17 km N of Shamakhi, Azerbaijan 40.786°, 48.629° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
September 1, 2026 brought a magnitude 4.0 earthquake 17 km N of Shamakhi, Azerbaijan, logged 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 → |
Seismographs logged a magnitude 2.1 earthquake 7 km SSE of Guánica, Puerto Rico with origin time 23:34 UTC on September 1, 2026. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 19 hours earlier. 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 E of Miyazaki, Japan 31.890°, 131.658° | 56.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded 23 km E of Miyazaki, Japan on September 1, 2026 at 23:24 UTC. The event was offshore. 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 → |
The USGS recorded this magnitude 2.1 earthquake 48 km SSW of Nanwalek, Alaska at 23:18 UTC on September 1, 2026. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 23:13:00 UTC | 2.5ml | 127 km WSW of Adak, Alaska 51.326°, -178.246° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 earthquake was recorded 127 km WSW of Adak, Alaska 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 → |
The USGS recorded this magnitude 2.0 earthquake 47 km WSW of Akhiok, Alaska at 23:00 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 M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:42:09 UTC | 4.6mb | Mid-Indian Ridge -13.099°, 66.560° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.6 earthquake near Mid-Indian Ridge with origin time 22:42 UTC on September 1, 2026. It arrived roughly 1 hours after a larger magnitude 4.7 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:37:43 UTC | 4.7mb | Mid-Indian Ridge -13.169°, 66.483° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 seismic event took place near Mid-Indian Ridge on September 1, 2026 at 22:37 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:33:12 UTC | 3.6mb | 103 km SSW of Nikolski, Alaska 52.062°, -169.376° | 10.0 km | - | I | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.6 earthquake 103 km SSW of Nikolski, Alaska came in on September 1, 2026 at 22:33 UTC. Coming 15 hours after a magnitude 4.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2026-09-01 2026-09-01 22:16:40 UTC | 3.6mb | 69 km SSW of Nikolski, Alaska 52.399°, -169.376° | 35.0 km | - | II | - | ✓ Reviewed | USGS → |
A magnitude 3.6 seismic event took place 69 km SSW of Nikolski, Alaska on September 1, 2026 at 22:16 UTC. It arrived roughly 16 hours after a larger magnitude 5.3 mainshock in the same 20 km area, placing it within the typical aftershock window. 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 → |
This magnitude 2.1 event was detected 5 km SE of Houston, Alaska on September 1, 2026, with origin time 22:10 UTC. 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 → |
September 1, 2026 brought a magnitude 2.8 earthquake 109 km SSW of Nikolski, Alaska, logged at 22:04 UTC. It arrived roughly 14 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 → |
On September 1, 2026 at 22:02 UTC, a magnitude 2.3 earthquake struck 113 km SSE of Ugashik, Alaska. It arrived roughly 2 hours after a larger magnitude 2.9 mainshock in the same 20 km area, placing it within the typical aftershock window. 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 → |
A magnitude 2.3 earthquake was recorded 40 km NNW of Beluga, Alaska 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 → |
A magnitude 2.2 earthquake was recorded 5 km WSW of Guánica, Puerto Rico 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 → |
The USGS recorded this magnitude 2.4 earthquake 21 km S of Weston, Colorado at 21:09 UTC on September 1, 2026. 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 → |
This magnitude 2.0 event was detected 71 km ESE of Ugashik, Alaska on September 1, 2026, with origin time 21:07 UTC. 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 → |
The USGS recorded this magnitude 4.4 earthquake 103 km SSW of Nikolski, Alaska at 20:47 UTC on September 1, 2026. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 13 hours earlier. 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 → |
This magnitude 2.6 event was detected 157 km ESE of McCarthy, Alaska on September 1, 2026, with origin time 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 → |
This magnitude 2.9 event was detected 119 km SSE of Ugashik, Alaska on September 1, 2026, with origin time 20:19 UTC. 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 → |
On September 1, 2026 at 20:12 UTC, a magnitude 2.8 earthquake struck 56 km ESE of Atka, Alaska. 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 → |
Reports of a magnitude 2.6 earthquake 159 km SE of Nikolski, Alaska came in on September 1, 2026 at 20:05 UTC. 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 → |
Seismographs logged a magnitude 2.1 earthquake 8 km ESE of Molalla, Oregon with origin time 19:47 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 M2.1 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 → |
Reports of a magnitude 2.0 earthquake 5 km NNE of Susitna, Alaska came in on September 1, 2026 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 → |
A magnitude 2.8 earthquake was recorded 12 km SW of Falls City, Texas on September 1, 2026 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, worldwide seismic activity registered a magnitude 4.6 earthquake 75 km ENE of Mutsu, Japan at 19:21 UTC. 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 → |
Reports of a magnitude 2.1 earthquake 54 km W of Cantwell, Alaska came in on September 1, 2026 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.