Earthquakes on September 18, 2025: 270 Worldwide, Largest M7.8

Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2025-09-18 2025-09-18 23:55:24 UTC	4.7mb	Easter Island region -24.456°, -112.068°	10.0 km	-	-	-	✓ Reviewed	USGS →
On September 18, 2025 at 23:55 UTC, a magnitude 4.7 earthquake struck in the Easter Island region. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. Geolocation places the event at -24.456°N, -112.068°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 23:47:32 UTC	4.3mb	146 km ESE of Petropavlovsk-Kamchatsky, Russia 52.586°, 160.650°	29.4 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.3 earthquake 146 km ESE of Petropavlovsk-Kamchatsky, Russia at 23:47 UTC on September 18, 2025. This event falls inside the aftershock decay of a nearby magnitude 5.6 earthquake that occurred about 4 hours earlier. At a depth of 29.4 km, the event was shallow crustal. Geolocation places the event at 52.586°N, 160.650°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 23:41:46 UTC	4.7mb	153 km ESE of Petropavlovsk-Kamchatsky, Russia 52.483°, 160.693°	10.1 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.7 earthquake was recorded 153 km ESE of Petropavlovsk-Kamchatsky, Russia on September 18, 2025 at 23:41 UTC. Coming 4 hours after a magnitude 5.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. At a depth of 10.1 km, the event was shallow crustal. Coordinates: 52.483°, 160.693°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 23:40:46 UTC	4.9mb	154 km ESE of Petropavlovsk-Kamchatsky, Russia 52.635°, 160.816°	10.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.9 earthquake 154 km ESE of Petropavlovsk-Kamchatsky, Russia with origin time 23:40 UTC on September 18, 2025. This event falls inside the aftershock decay of a nearby magnitude 5.5 earthquake that occurred about 4 hours earlier. The event originated approximately 10.0 km below the surface, classifying it as shallow crustal. Geolocation places the event at 52.635°N, 160.816°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 23:27:44 UTC	4.8mb	156 km E of Petropavlovsk-Kamchatsky, Russia 52.834°, 160.930°	10.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.8 earthquake was recorded 156 km E of Petropavlovsk-Kamchatsky, Russia on September 18, 2025 at 23:27 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.8 earthquake that occurred about 4 hours earlier. This was a shallow crustal earthquake, focused at 10.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 52.834°N, 160.930°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 23:14:59 UTC	5.2mb	153 km ESE of Petropavlovsk-Kamchatsky, Russia 52.533°, 160.724°	20.9 km	-	-	-	✓ Reviewed	USGS →
At 23:14 UTC on September 18, 2025, a magnitude 5.2 tremor occurred 153 km ESE of Petropavlovsk-Kamchatsky, Russia. Coming 3 hours after a magnitude 5.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event originated approximately 20.9 km below the surface, classifying it as shallow crustal. Coordinates: 52.533°, 160.724°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 23:10:08 UTC	4.8mb	95 km ESE of Petropavlovsk-Kamchatsky, Russia 52.841°, 160.003°	46.8 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.8 earthquake 95 km ESE of Petropavlovsk-Kamchatsky, Russia with origin time 23:10 UTC on September 18, 2025. The hypocenter lay at 46.8 km, placing this in the shallow crustal category. Coordinates: 52.841°, 160.003°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:59:41 UTC	4.6mb	142 km ESE of Petropavlovsk-Kamchatsky, Russia 52.367°, 160.397°	28.1 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.6 earthquake was recorded 142 km ESE of Petropavlovsk-Kamchatsky, Russia on September 18, 2025 at 22:59 UTC. This was a shallow crustal earthquake, focused at 28.1 km depth. The epicenter is at 52.367°, 160.397°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:53:41 UTC	5.0mb	24 km SSE of Nabire, Indonesia -3.576°, 135.549°	10.0 km	1	-	-	✓ Reviewed	USGS →
September 18, 2025 brought a magnitude 5.0 earthquake 24 km SSE of Nabire, Indonesia, logged at 22:53 UTC. This event falls inside the aftershock decay of a nearby magnitude 6.0 earthquake that occurred about 5 hours earlier. A small number of nearby observers (1) submitted felt reports to the USGS. This was a shallow crustal earthquake, focused at 10.0 km depth. Geolocation places the event at -3.576°N, 135.549°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:50:37 UTC	4.9mb	143 km ENE of Petropavlovsk-Kamchatsky, Russia 53.393°, 160.709°	35.0 km	-	-	-	✓ Reviewed	USGS →
On September 18, 2025, worldwide seismic activity registered a magnitude 4.9 earthquake 143 km ENE of Petropavlovsk-Kamchatsky, Russia at 22:50 UTC. This was a shallow crustal earthquake, focused at 35.0 km depth. Coordinates: 53.393°, 160.709°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:45:46 UTC	4.5mb	57 km E of Petropavlovsk-Kamchatsky, Russia 53.065°, 159.489°	91.4 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.5 earthquake 57 km E of Petropavlovsk-Kamchatsky, Russia came in on September 18, 2025 at 22:45 UTC. At a depth of 91.4 km, the event was intermediate depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. The epicenter is at 53.065°, 159.489°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:37:10 UTC	5.5mb	151 km E of Petropavlovsk-Kamchatsky, Russia 53.007°, 160.885°	35.0 km	-	IV	green	✓ Reviewed	USGS →
The USGS recorded this magnitude 5.5 earthquake 151 km E of Petropavlovsk-Kamchatsky, Russia at 22:37 UTC on September 18, 2025. Coming 4 hours after a magnitude 7.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. Peak ground motion corresponded to MMI 4.0, classified as moderate shaking. At a depth of 35.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 53.007°, 160.885°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:34:32 UTC	4.5mb	139 km ESE of Petropavlovsk-Kamchatsky, Russia 52.553°, 160.511°	31.4 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.5 seismic event took place 139 km ESE of Petropavlovsk-Kamchatsky, Russia on September 18, 2025 at 22:34 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.6 earthquake that occurred about 3 hours earlier. The event originated approximately 31.4 km below the surface, classifying it as shallow crustal. Geolocation places the event at 52.553°N, 160.511°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:32:43 UTC	2.3ml	6 km S of Pāhala, Hawaii 19.148°, -155.480°	33.8 km	-	-	-	✓ Reviewed	USGS →
On September 18, 2025 at 22:32 UTC, a magnitude 2.3 earthquake struck 6 km S of Pāhala, Hawaii. The event originated approximately 33.8 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 19.148°N, -155.480°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:32:12 UTC	4.3mb	176 km SSE of Vilyuchinsk, Russia 51.469°, 159.424°	35.0 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.3 event was detected 176 km SSE of Vilyuchinsk, Russia on September 18, 2025, with origin time 22:32 UTC. The event originated approximately 35.0 km below the surface, classifying it as shallow crustal. Coordinates: 51.469°, 159.424°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:17:07 UTC	4.9mb	147 km E of Petropavlovsk-Kamchatsky, Russia 53.036°, 160.822°	31.4 km	-	-	-	✓ Reviewed	USGS →
At 22:17 UTC on September 18, 2025, a magnitude 4.9 tremor occurred 147 km E of Petropavlovsk-Kamchatsky, Russia. It arrived roughly 3 hours after a larger magnitude 7.8 mainshock in the same 20 km area, placing it within the typical aftershock window. The hypocenter lay at 31.4 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 53.036°, 160.822°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:14:02 UTC	4.2mb	120 km SSE of Vilyuchinsk, Russia 52.008°, 159.319°	35.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.2 earthquake 120 km SSE of Vilyuchinsk, Russia with origin time 22:14 UTC on September 18, 2025. The hypocenter lay at 35.0 km, placing this in the shallow crustal category. Coordinates: 52.008°, 159.319°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:10:19 UTC	4.9mb	148 km E of Petropavlovsk-Kamchatsky, Russia 52.993°, 160.833°	35.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.9 earthquake 148 km E of Petropavlovsk-Kamchatsky, Russia at 22:10 UTC on September 18, 2025. This event falls inside the aftershock decay of a nearby magnitude 7.8 earthquake that occurred about 3 hours earlier. At a depth of 35.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 52.993°N, 160.833°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:08:06 UTC	4.9mb	155 km ESE of Petropavlovsk-Kamchatsky, Russia 52.769°, 160.882°	10.0 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.9 event was detected 155 km ESE of Petropavlovsk-Kamchatsky, Russia on September 18, 2025, with origin time 22:08 UTC. Coming 2 hours after a magnitude 5.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event originated approximately 10.0 km below the surface, classifying it as shallow crustal. Coordinates: 52.769°, 160.882°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 22:03:40 UTC	4.4mb	147 km E of Petropavlovsk-Kamchatsky, Russia 52.955°, 160.815°	36.1 km	-	-	-	✓ Reviewed	USGS →
At 22:03 UTC on September 18, 2025, a magnitude 4.4 tremor occurred 147 km E of Petropavlovsk-Kamchatsky, Russia. Coming 3 hours after a magnitude 5.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event originated approximately 36.1 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 52.955°, 160.815°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:42:11 UTC	4.6mb	158 km E of Petropavlovsk-Kamchatsky, Russia 53.055°, 160.998°	35.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.6 earthquake 158 km E of Petropavlovsk-Kamchatsky, Russia with origin time 21:42 UTC on September 18, 2025. This event falls inside the aftershock decay of a nearby magnitude 5.8 earthquake that occurred about 3 hours earlier. The hypocenter lay at 35.0 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 53.055°N, 160.998°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:41:06 UTC	4.9mb	159 km E of Petropavlovsk-Kamchatsky, Russia 52.981°, 161.001°	10.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.9 earthquake 159 km E of Petropavlovsk-Kamchatsky, Russia came in on September 18, 2025 at 21:41 UTC. It arrived roughly 3 hours after a larger magnitude 5.8 mainshock in the same 20 km area, placing it within the typical aftershock window. This was a shallow crustal earthquake, focused at 10.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 52.981°, 161.001°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:37:55 UTC	5.7mb	140 km E of Petropavlovsk-Kamchatsky, Russia 52.937°, 160.705°	47.9 km	-	IV	green	✓ Reviewed	USGS →
On September 18, 2025, worldwide seismic activity registered a magnitude 5.7 earthquake 140 km E of Petropavlovsk-Kamchatsky, Russia at 21:37 UTC. It arrived roughly 2 hours after a larger magnitude 5.8 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. Maximum shaking intensity peaked at MMI 4.0 (moderate). It ranks as the fourth largest event in the current dataset. This was a shallow crustal earthquake, focused at 47.9 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 52.937°, 160.705°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M5.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:36:41 UTC	5.2mb	164 km ESE of Petropavlovsk-Kamchatsky, Russia 52.353°, 160.756°	10.0 km	-	III	green	✓ Reviewed	USGS →
The USGS recorded this magnitude 5.2 earthquake 164 km ESE of Petropavlovsk-Kamchatsky, Russia at 21:36 UTC on September 18, 2025. It arrived roughly 2 hours after a larger magnitude 5.6 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. Maximum shaking intensity peaked at MMI 3.5 (light). This was a shallow crustal earthquake, focused at 10.0 km depth. The epicenter is at 52.353°, 160.756°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:33:40 UTC	4.1mb	147 km E of Petropavlovsk-Kamchatsky, Russia 52.844°, 160.797°	10.0 km	-	-	-	✓ Reviewed	USGS →
On September 18, 2025 at 21:33 UTC, a magnitude 4.1 earthquake struck 147 km E of Petropavlovsk-Kamchatsky, Russia. This event falls inside the aftershock decay of a nearby magnitude 5.8 earthquake that occurred about 2 hours earlier. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 52.844°N, 160.797°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:32:43 UTC	2.4ml	60 km W of Happy Valley, Alaska 60.024°, -152.805°	108.7 km	1	-	-	Auto	USGS →
On September 18, 2025, worldwide seismic activity registered a magnitude 2.4 earthquake 60 km W of Happy Valley, Alaska at 21:32 UTC. A small number of nearby observers (1) submitted felt reports to the USGS. This was a intermediate depth earthquake, focused at 108.7 km depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. The epicenter is at 60.024°, -152.805°. The automatic solution is preliminary and may be refined as additional station data arrives. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:29:25 UTC	4.7mb	122 km E of Petropavlovsk-Kamchatsky, Russia 53.004°, 160.446°	59.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.7 earthquake 122 km E of Petropavlovsk-Kamchatsky, Russia with origin time 21:29 UTC on September 18, 2025. It arrived roughly 2 hours after a larger magnitude 5.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event originated approximately 59.0 km below the surface, classifying it as shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 53.004°, 160.446°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:22:11 UTC	4.1mb	133 km SE of Petropavlovsk-Kamchatsky, Russia 52.238°, 160.057°	35.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.1 earthquake was recorded 133 km SE of Petropavlovsk-Kamchatsky, Russia on September 18, 2025 at 21:22 UTC. Coming 1 hours after a magnitude 4.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. At a depth of 35.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 52.238°, 160.057°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:21:40 UTC	4.6mb	6 km E of Hualien City, Taiwan 23.980°, 121.671°	20.0 km	-	-	-	✓ Reviewed	USGS →
On September 18, 2025, worldwide seismic activity registered a magnitude 4.6 earthquake 6 km E of Hualien City, Taiwan at 21:21 UTC. At a depth of 20.0 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 23.980°, 121.671°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-18 2025-09-18 21:19:56 UTC	4.3mb	116 km ESE of Petropavlovsk-Kamchatsky, Russia 52.768°, 160.291°	29.9 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.3 earthquake 116 km ESE of Petropavlovsk-Kamchatsky, Russia came in on September 18, 2025 at 21:19 UTC. It arrived roughly 1 hours after a larger magnitude 4.8 mainshock in the same 20 km area, placing it within the typical aftershock window. This was a shallow crustal earthquake, focused at 29.9 km depth. The epicenter is at 52.768°, 160.291°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M4.3 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 18, 2025. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.

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