Earthquakes on September 29, 2025: 194 Worldwide, Largest M5.5

Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2025-09-29 2025-09-29 23:36:45 UTC	2.0ml	7 km ENE of Healy, Alaska 63.885°, -148.836°	103.3 km	-	-	-	Auto	USGS →
The USGS recorded this magnitude 2.0 earthquake 7 km ENE of Healy, Alaska at 23:36 UTC on September 29, 2025. At a depth of 103.3 km, the event was intermediate depth. Coordinates: 63.885°, -148.836°. The automatic solution is preliminary and may be refined as additional station data arrives. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 23:32:23 UTC	2.2ml	1 km SE of Milpitas, CA 37.422°, -121.896°	2.1 km	-	-	-	Auto	USGS →
Seismographs logged a magnitude 2.2 earthquake 1 km SE of Milpitas, CA with origin time 23:32 UTC on September 29, 2025. At a depth of just 2.1 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 37.422°N, -121.896°E. The automatic solution is preliminary and may be refined as additional station data arrives. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 23:19:00 UTC	4.3mb	169 km E of Petropavlovsk-Kamchatsky, Russia 53.042°, 161.159°	29.7 km	-	-	-	✓ Reviewed	USGS →
September 29, 2025 brought a magnitude 4.3 earthquake 169 km E of Petropavlovsk-Kamchatsky, Russia, logged at 23:19 UTC. This was a shallow crustal earthquake, focused at 29.7 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 53.042°N, 161.159°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.
2025-09-29 2025-09-29 22:48:55 UTC	5.0mb	116 km SSW of Kokopo, Papua New Guinea -5.242°, 151.722°	78.6 km	-	-	-	✓ Reviewed	USGS →
A magnitude 5.0 earthquake was recorded 116 km SSW of Kokopo, Papua New Guinea on September 29, 2025 at 22:48 UTC. It ranks as the second largest event in the current dataset. At a depth of 78.6 km, the event was intermediate depth. Geolocation places the event at -5.242°N, 151.722°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.
2025-09-29 2025-09-29 22:30:15 UTC	4.6mb	116 km S of Banjar, Indonesia -8.245°, 107.380°	35.0 km	1	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.6 earthquake 116 km S of Banjar, Indonesia came in on September 29, 2025 at 22:30 UTC. A small number of nearby observers (1) submitted felt reports to the USGS. This was a shallow crustal earthquake, focused at 35.0 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at -8.245°N, 107.380°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.
2025-09-29 2025-09-29 22:07:23 UTC	5.5mww	89 km E of Petropavlovsk-Kamchatsky, Russia 52.964°, 159.945°	42.0 km	1	IV	green	✓ Reviewed	USGS →
On September 29, 2025 at 22:07 UTC, a magnitude 5.5 earthquake struck 89 km E of Petropavlovsk-Kamchatsky, 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 29, 2025. Maximum shaking intensity peaked at MMI 4.5 (moderate). A small number of nearby observers (1) submitted felt reports to the USGS. The hypocenter lay at 42.0 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 52.964°, 159.945°. 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.
2025-09-29 2025-09-29 22:01:22 UTC	2.0ml	3 km WSW of Dundee, Oregon 45.265°, -123.052°	-0.1 km	-	-	-	✓ Reviewed	USGS →
On September 29, 2025, worldwide seismic activity registered a magnitude 2.0 earthquake 3 km WSW of Dundee, Oregon at 22:01 UTC. At a depth of just -0.1 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The epicenter is at 45.265°, -123.052°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 21:41:59 UTC	3.7mb	21 km NE of San Felipe, Chile -32.628°, -70.543°	20.3 km	2	-	-	✓ Reviewed	USGS →
On September 29, 2025, worldwide seismic activity registered a magnitude 3.7 earthquake 21 km NE of San Felipe, Chile at 21:41 UTC. A small number of nearby observers (2) submitted felt reports to the USGS. At a depth of 20.3 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at -32.628°, -70.543°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 21:38:47 UTC	2.7ml	56 km S of Whites City, New Mexico 31.669°, -104.342°	6.1 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.7 earthquake 56 km S of Whites City, New Mexico with origin time 21:38 UTC on September 29, 2025. The event originated approximately 6.1 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 31.669°, -104.342°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 20:15:56 UTC	4.2mb	188 km SE of Petropavlovsk-Kamchatsky, Russia 52.089°, 160.897°	10.0 km	-	-	-	✓ Reviewed	USGS →
At 20:15 UTC on September 29, 2025, a magnitude 4.2 tremor occurred 188 km SE of Petropavlovsk-Kamchatsky, Russia. 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. The epicenter is at 52.089°, 160.897°. 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.
2025-09-29 2025-09-29 19:58:36 UTC	2.3ml	27 km SW of Carlsbad, CA 33.019°, -117.589°	18.8 km	-	-	-	✓ Reviewed	USGS →
September 29, 2025 brought a magnitude 2.3 earthquake 27 km SW of Carlsbad, CA, logged at 19:58 UTC. At a depth of 18.8 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 33.019°N, -117.589°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.
2025-09-29 2025-09-29 19:25:23 UTC	4.3mb	198 km WNW of Tuapejat, Indonesia -1.436°, 97.910°	10.0 km	-	-	-	✓ Reviewed	USGS →
On September 29, 2025 at 19:25 UTC, a magnitude 4.3 earthquake struck 198 km WNW of Tuapejat, Indonesia. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. Coordinates: -1.436°, 97.910°. 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.
2025-09-29 2025-09-29 18:38:36 UTC	2.7ml	18 km NNE of Lake Roberts Heights, New Mexico 33.192°, -108.094°	10.1 km	3	-	-	✓ Reviewed	USGS →
On September 29, 2025, worldwide seismic activity registered a magnitude 2.7 earthquake 18 km NNE of Lake Roberts Heights, New Mexico at 18:38 UTC. A small number of nearby observers (3) submitted felt reports to the USGS. This was a shallow crustal earthquake, focused at 10.1 km depth. Geolocation places the event at 33.192°N, -108.094°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 18:28:10 UTC	2.4ml	14 km W of Johannesburg, CA 35.350°, -117.790°	6.7 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.4 seismic event took place 14 km W of Johannesburg, CA on September 29, 2025 at 18:28 UTC. It arrived roughly 1 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The hypocenter lay at 6.7 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 35.350°, -117.790°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 18:24:06 UTC	3.1ml	14 km W of Johannesburg, CA 35.350°, -117.791°	6.4 km	4	-	-	✓ Reviewed	USGS →
Reports of a magnitude 3.1 earthquake 14 km W of Johannesburg, CA came in on September 29, 2025 at 18:24 UTC. A small number of nearby observers (4) submitted felt reports to the USGS. At a depth of 6.4 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 35.350°N, -117.791°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 17:40:17 UTC	4.2mb	51 km NNE of Calama, Chile -22.010°, -68.795°	108.2 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.2 earthquake 51 km NNE of Calama, Chile at 17:40 UTC on September 29, 2025. At a depth of 108.2 km, the event was intermediate depth. Geolocation places the event at -22.010°N, -68.795°E. 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.
2025-09-29 2025-09-29 17:28:04 UTC	4.6mb	237 km ESE of Onagawa Chō, Japan 37.965°, 144.084°	10.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.6 seismic event took place 237 km ESE of Onagawa Chō, Japan on September 29, 2025 at 17:28 UTC. The hypocenter lay at 10.0 km, placing this in the shallow crustal category. Coordinates: 37.965°, 144.084°. 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.
2025-09-29 2025-09-29 17:27:50 UTC	4.4mb	247 km ESE of Onagawa Chō, Japan 37.792°, 144.141°	10.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.4 earthquake 247 km ESE of Onagawa Chō, Japan at 17:27 UTC on September 29, 2025. This was a shallow crustal earthquake, focused at 10.0 km depth. The epicenter is at 37.792°, 144.141°. 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.
2025-09-29 2025-09-29 17:12:27 UTC	2.2ml	9 km ESE of Smiley, Texas 29.223°, -97.547°	6.7 km	-	-	-	✓ Reviewed	USGS →
On September 29, 2025, worldwide seismic activity registered a magnitude 2.2 earthquake 9 km ESE of Smiley, Texas at 17:12 UTC. At a depth of 6.7 km, the event was shallow crustal. Coordinates: 29.223°, -97.547°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 17:10:16 UTC	2.2ml	69 km W of Hooper, Utah 41.121°, -112.949°	0.0 km	-	-	-	✓ Reviewed	USGS →
At 17:10 UTC on September 29, 2025, a magnitude 2.2 tremor occurred 69 km W of Hooper, Utah. At a depth of just 0.0 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 41.121°, -112.949°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 16:48:39 UTC	4.1mb	4 km NW of Binubusan, Philippines 14.001°, 120.606°	182.6 km	-	-	-	✓ Reviewed	USGS →
On September 29, 2025 at 16:48 UTC, a magnitude 4.1 earthquake struck 4 km NW of Binubusan, Philippines. The event originated approximately 182.6 km below the surface, classifying it as intermediate depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. The epicenter is at 14.001°, 120.606°. 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.
2025-09-29 2025-09-29 15:19:02 UTC	4.9mb	90 km ENE of Kainantu, Papua New Guinea -5.859°, 146.557°	103.9 km	-	-	-	✓ Reviewed	USGS →
On September 29, 2025, worldwide seismic activity registered a magnitude 4.9 earthquake 90 km ENE of Kainantu, Papua New Guinea at 15:19 UTC. It ranks as the fourth largest event in the current dataset. This was a intermediate depth earthquake, focused at 103.9 km depth. The epicenter is at -5.859°, 146.557°. 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.
2025-09-29 2025-09-29 15:04:30 UTC	2.0ml	29 km E of Big Lake, Texas 31.143°, -101.161°	5.9 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.0 event was detected 29 km E of Big Lake, Texas on September 29, 2025, with origin time 15:04 UTC. The event originated approximately 5.9 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 31.143°, -101.161°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 14:35:04 UTC	2.2ml	23 km SSW of Mammoth, Wyoming 44.798°, -110.849°	4.9 km	-	-	-	✓ Reviewed	USGS →
On September 29, 2025 at 14:35 UTC, a magnitude 2.2 earthquake struck 23 km SSW of Mammoth, Wyoming. At a depth of just 4.9 km, this was a very shallow event, close enough to the surface that modest magnitudes can produce significant local shaking. The epicenter is at 44.798°, -110.849°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 14:33:57 UTC	2.2ml	59 km NE of Valmy, Nevada 41.213°, -116.683°	10.1 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.2 earthquake 59 km NE of Valmy, Nevada at 14:33 UTC on September 29, 2025. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 5 hours earlier. This was a shallow crustal earthquake, focused at 10.1 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Geolocation places the event at 41.213°N, -116.683°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 13:32:56 UTC	3.6ml	71 km SE of Denali National Park, Alaska 63.174°, -150.561°	114.7 km	-	III	-	✓ Reviewed	USGS →
At 13:32 UTC on September 29, 2025, a magnitude 3.6 tremor occurred 71 km SE of Denali National Park, Alaska. On the Modified Mercalli scale, shaking reached 3.3 — considered light. The event originated approximately 114.7 km below the surface, classifying it as intermediate depth. The offshore location combined with this depth is characteristic of seismicity along descending slabs. Geolocation places the event at 63.174°N, -150.561°E. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 13:21:02 UTC	4.2mb	Komandorskiye Ostrova, Russia region 54.651°, 168.178°	10.0 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.2 event was detected in the Komandorskiye Ostrova, Russia region on September 29, 2025, with origin time 13:21 UTC. The event originated approximately 10.0 km below the surface, classifying it as shallow crustal. Coordinates: 54.651°, 168.178°. 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.
2025-09-29 2025-09-29 13:05:13 UTC	4.5mb	165 km SE of Petropavlovsk-Kamchatsky, Russia 52.212°, 160.634°	16.7 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.5 earthquake was recorded 165 km SE of Petropavlovsk-Kamchatsky, Russia on September 29, 2025 at 13:05 UTC. This was a shallow crustal earthquake, focused at 16.7 km depth. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 52.212°, 160.634°. 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.
2025-09-29 2025-09-29 12:42:28 UTC	3.3ml	217 km W of Bandon, Oregon 43.445°, -127.051°	10.0 km	1	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 3.3 earthquake 217 km W of Bandon, Oregon at 12:42 UTC on September 29, 2025. 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. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. Coordinates: 43.445°, -127.051°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-09-29 2025-09-29 12:42:01 UTC	2.5ml	54 km NE of Valmy, Nevada 41.178°, -116.725°	7.5 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.5 earthquake 54 km NE of Valmy, Nevada at 12:42 UTC on September 29, 2025. It arrived roughly 3 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. At a depth of 7.5 km, the event was shallow crustal. The event was offshore — common for earthquakes along subduction zones and transform plate boundaries. The epicenter is at 41.178°, -116.725°. The solution has been reviewed by a USGS seismologist and is considered finalized. See the M2.5 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 29, 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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