Earthquakes on September 6, 2025
236
EARTHQUAKES on September 6, 2025
24-hour UTC period · USGS data
LARGEST: M5.4 — 81 km SSW of Nikolski, Alaska
38 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
33
M3.0–3.9
6
M2.0–2.9
23
M1.0–1.9
171
Activity Summary
236
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
5.4
81 km SSW of Nikolski, Alaska
20:40 UTC · 37.7 km deep
5.1
141 km SSE of Sand Point, Alaska
06:25 UTC · 10.0 km deep
5.0
35 km NE of Hicks Bay, New Zealand
19:55 UTC · 43.9 km deep
Felt by 2
4.9
120 km ENE of Ozernovskiy, Russia
20:00 UTC · 72.7 km deep
4.8
181 km SSE of Vilyuchinsk, Russia
16:08 UTC · 10.0 km deep
4.7
134 km SE of Petropavlovsk-Kamchatsky, Russia
21:09 UTC · 30.8 km deep
4.7
245 km E of Levuka, Fiji
18:51 UTC · 558.3 km deep
4.7
northern Mid-Atlantic Ridge
11:02 UTC · 10.0 km deep
Earthquake Map — September 6, 2025
All Earthquakes — September 6, 2025
Showing 30 of 65 (filtered from 236)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2025-09-06 2025-09-06 23:48:54 UTC | 2.1md | 9 km SE of Deep Springs, CA 37.312°, -117.923° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
September 6, 2025 brought a magnitude 2.1 earthquake 9 km SE of Deep Springs, CA, logged at 23:48 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 23:40:29 UTC | 4.1mb | 161 km SSE of Vilyuchinsk, Russia 51.555°, 159.160° | 62.3 km | - | - | - | ✓ Reviewed | USGS → |
At 23:40 UTC on September 6, 2025, a magnitude 4.1 tremor occurred 161 km SSE of Vilyuchinsk, Russia. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 23:34:50 UTC | 2.2ml | 29 km S of Denali National Park, Alaska 63.279°, -151.682° | 0.7 km | - | - | - | Auto | USGS → |
A magnitude 2.2 seismic event took place 29 km S of Denali National Park, Alaska on September 6, 2025 at 23:34 UTC. 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. | ||||||||
2025-09-06 2025-09-06 22:12:58 UTC | 4.3mb | 63 km SSE of Itoman, Japan 25.616°, 127.955° | 12.8 km | - | - | - | ✓ Reviewed | USGS → |
On September 6, 2025 at 22:12 UTC, a magnitude 4.3 earthquake struck 63 km SSE of Itoman, Japan. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 22:11:11 UTC | 4.4mb | 87 km SW of Nikolski, Alaska 52.307°, -169.639° | 35.0 km | - | II | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 87 km SW of Nikolski, Alaska at 22:11 UTC on September 6, 2025. It arrived roughly 2 hours after a larger magnitude 5.4 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 21:14:01 UTC | 4.6mb | 127 km SE of Petropavlovsk-Kamchatsky, Russia 52.398°, 160.157° | 43.5 km | - | - | - | ✓ Reviewed | USGS → |
September 6, 2025 brought a magnitude 4.6 earthquake 127 km SE of Petropavlovsk-Kamchatsky, Russia, logged at 21:14 UTC. 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. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 21:09:17 UTC | 4.7mb | 134 km SE of Petropavlovsk-Kamchatsky, Russia 52.317°, 160.185° | 30.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.7 earthquake 134 km SE of Petropavlovsk-Kamchatsky, Russia at 21:09 UTC on September 6, 2025. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 20:51:06 UTC | 4.2mb | 36 km WSW of Papanoa, Mexico 17.218°, -101.368° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 36 km WSW of Papanoa, Mexico came in on September 6, 2025 at 20:51 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 20:40:42 UTC | 5.4mww | 81 km SSW of Nikolski, Alaska 52.315°, -169.499° | 37.7 km | - | III | green | ✓ Reviewed | USGS → |
On September 6, 2025 at 20:40 UTC, a magnitude 5.4 earthquake struck 81 km SSW of Nikolski, Alaska. A tsunami evaluation was automatically initiated given the magnitude and location. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 20:38:39 UTC | 3.7mb | 64 km WSW of Nikolski, Alaska 52.703°, -169.742° | 51.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.7 event was detected 64 km WSW of Nikolski, Alaska on September 6, 2025, with origin time 20:38 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 20:26:30 UTC | 3.7mb | 93 km WSW of Nikolski, Alaska 52.538°, -170.074° | 63.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.7 earthquake 93 km WSW of Nikolski, Alaska came in on September 6, 2025 at 20:26 UTC. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 20:00:57 UTC | 4.9mb | 120 km ENE of Ozernovskiy, Russia 51.756°, 158.185° | 72.7 km | - | - | - | ✓ Reviewed | USGS → |
On September 6, 2025, worldwide seismic activity registered a magnitude 4.9 earthquake 120 km ENE of Ozernovskiy, Russia at 20:00 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 19:55:06 UTC | 5.0mb | 35 km NE of Hicks Bay, New Zealand -37.413°, 178.620° | 43.9 km | 2 | III | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.0 earthquake 35 km NE of Hicks Bay, New Zealand with origin time 19:55 UTC on September 6, 2025. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. The event was offshore. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 18:55:14 UTC | 4.4mb | 23 km SSE of Tinogasta, Argentina -28.245°, -67.436° | 111.6 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 23 km SSE of Tinogasta, Argentina on September 6, 2025, with origin time 18:55 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 18:51:29 UTC | 4.7mb | 245 km E of Levuka, Fiji -17.748°, -178.392° | 558.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.7 event was detected 245 km E of Levuka, Fiji on September 6, 2025, with origin time 18:51 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 18:33:42 UTC | 4.3mb | 107 km ESE of Padangsidempuan, Indonesia 1.068°, 100.189° | 199.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 107 km ESE of Padangsidempuan, Indonesia on September 6, 2025 at 18:33 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 17:59:51 UTC | 2.1md | 0 km N of Greenback, Tennessee 35.669°, -84.174° | 6.4 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 0 km N of Greenback, Tennessee on September 6, 2025 at 17:59 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 17:59:29 UTC | 2.3ml | 54 km ESE of Cantwell, Alaska 63.181°, -147.961° | 14.6 km | - | - | - | Auto | USGS → |
This magnitude 2.3 event was detected 54 km ESE of Cantwell, Alaska on September 6, 2025, with origin time 17:59 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 17:33:35 UTC | 4.5mb | Izu Islands, Japan region 32.267°, 142.071° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake in the Izu Islands, Japan region with origin time 17:33 UTC on September 6, 2025. It arrived roughly 1 hours after a larger magnitude 4.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 17:33:06 UTC | 4.6mb | Izu Islands, Japan region 32.250°, 142.130° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On September 6, 2025 at 17:33 UTC, a magnitude 4.6 earthquake struck in the Izu Islands, Japan region. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 17:21:01 UTC | 4.4mb | Balleny Islands region -61.735°, 161.639° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake in the Balleny Islands region came in on September 6, 2025 at 17:21 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 17:16:07 UTC | 4.2mb | Kuril Islands 47.396°, 152.241° | 130.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place near Kuril Islands on September 6, 2025 at 17:16 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 17:07:39 UTC | 4.2mb | 160 km SSE of Vilyuchinsk, Russia 51.659°, 159.517° | 47.5 km | - | - | - | ✓ Reviewed | USGS → |
September 6, 2025 brought a magnitude 4.2 earthquake 160 km SSE of Vilyuchinsk, Russia, logged at 17:07 UTC. Coming 1 hours after a magnitude 4.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 16:21:20 UTC | 4.3mb | 166 km SSE of Vilyuchinsk, Russia 51.594°, 159.489° | 37.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 166 km SSE of Vilyuchinsk, Russia with origin time 16:21 UTC on September 6, 2025. This event falls inside the aftershock decay of a nearby magnitude 4.8 earthquake that occurred about 1 hours earlier. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 16:08:28 UTC | 4.8mww | 181 km SSE of Vilyuchinsk, Russia 51.454°, 159.518° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 16:08 UTC on September 6, 2025, a magnitude 4.8 tremor occurred 181 km SSE of Vilyuchinsk, Russia. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 15:44:09 UTC | 4.3mb | 40 km NW of Hirara, Japan 25.067°, 125.030° | 35.6 km | - | - | - | ✓ Reviewed | USGS → |
On September 6, 2025, worldwide seismic activity registered a magnitude 4.3 earthquake 40 km NW of Hirara, Japan at 15:44 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 15:21:38 UTC | 2.9ml | 85 km S of Old Harbor, Alaska 56.441°, -153.094° | 0.0 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.9 earthquake 85 km S of Old Harbor, Alaska with origin time 15:21 UTC on September 6, 2025. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 15:04:55 UTC | 2.5ml | 5 km NW of Meadow Lakes, Alaska 61.662°, -149.677° | 54.9 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.5 earthquake 5 km NW of Meadow Lakes, Alaska with origin time 15:04 UTC on September 6, 2025. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 15:04:39 UTC | 2.6ml | 86 km NNW of Karluk, Alaska 58.240°, -155.196° | 4.3 km | - | - | - | ✓ Reviewed | USGS → |
On September 6, 2025 at 15:04 UTC, a magnitude 2.6 earthquake struck 86 km NNW of Karluk, Alaska. Coming 1 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2025-09-06 2025-09-06 15:04:18 UTC | 3.4ml | 90 km ESE of King Salmon, Alaska 58.274°, -155.329° | 0.0 km | - | - | - | Auto | USGS → |
A magnitude 3.4 seismic event took place 90 km ESE of King Salmon, Alaska on September 6, 2025 at 15:04 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.4 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 6, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.