Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2021-10-17 2021-10-17 23:51:18 UTC	2.9ml	114 km E of Chignik, Alaska 56.349°, -156.555°	46.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.9 earthquake 114 km E of Chignik, Alaska came in on October 17, 2021 at 23:51 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 23:26:32 UTC	4.6mb	11 km NW of Pomposo Castellanos, Mexico 16.650°, -93.954°	137.7 km	2	-	-	✓ Reviewed	USGS →
On October 17, 2021 at 23:26 UTC, a magnitude 4.6 earthquake struck 11 km NW of Pomposo Castellanos, Mexico. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 23:16:38 UTC	2.2md	2 km SSW of P?hala, Hawaii 19.182°, -155.486°	35.0 km	-	-	-	Auto	USGS →
This magnitude 2.2 event was detected 2 km SSW of P?hala, Hawaii on October 17, 2021, with origin time 23:16 UTC. Coming 7 hours after a magnitude 3.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 23:11:27 UTC	2.0md	4 km ESE of P?hala, Hawaii 19.193°, -155.438°	31.8 km	-	-	-	Auto	USGS →
This magnitude 2.0 event was detected 4 km ESE of P?hala, Hawaii on October 17, 2021, with origin time 23:11 UTC. It arrived roughly 7 hours after a larger magnitude 3.9 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 22:58:40 UTC	3.3ml	4 km E of P?hala, Hawaii 19.200°, -155.435°	35.3 km	7	IV	-	✓ Reviewed	USGS →
A magnitude 3.3 earthquake was recorded 4 km E of P?hala, Hawaii on October 17, 2021 at 22:58 UTC. It arrived roughly 7 hours after a larger magnitude 3.9 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 22:04:31 UTC	4.5mb	91 km ENE of Amahai, Indonesia -2.932°, 129.637°	10.0 km	-	-	-	✓ Reviewed	USGS →
On October 17, 2021, worldwide seismic activity registered a magnitude 4.5 earthquake 91 km ENE of Amahai, Indonesia at 22:04 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 21:59:51 UTC	5.0mb	Bonin Islands, Japan region 28.697°, 138.202°	516.0 km	-	-	green	✓ Reviewed	USGS →
On October 17, 2021, worldwide seismic activity registered a magnitude 5.0 earthquake in the Bonin Islands, Japan region at 21:59 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 21:56:32 UTC	4.3mb	35 km SW of Duki, Pakistan 29.949°, 68.293°	22.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.3 earthquake 35 km SW of Duki, Pakistan at 21:56 UTC on October 17, 2021. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 21:41:06 UTC	2.7ml	15km ESE of Olancha, CA 36.213°, -117.861°	4.1 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.7 earthquake 15km ESE of Olancha, CA at 21:41 UTC on October 17, 2021. Coming 8 hours after a magnitude 4.0 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 M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 21:29:33 UTC	2.1ml	55 km S of Whites City, New Mexico 31.680°, -104.397°	6.2 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.1 earthquake was recorded 55 km S of Whites City, New Mexico on October 17, 2021 at 21:29 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 21:20:42 UTC	2.2ml	11 km NE of Ninilchik, Alaska 60.132°, -151.535°	51.1 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.2 earthquake 11 km NE of Ninilchik, Alaska came in on October 17, 2021 at 21:20 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 21:16:33 UTC	2.5ml	Alaska Peninsula 56.382°, -156.588°	14.2 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.5 earthquake near Alaska Peninsula came in on October 17, 2021 at 21:16 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 21:03:12 UTC	4.1mb	48 km ESE of Murghob, Tajikistan 38.047°, 74.498°	189.3 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.1 seismic event took place 48 km ESE of Murghob, Tajikistan on October 17, 2021 at 21:03 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 20:37:02 UTC	4.7mb	262 km WNW of Longyearbyen, Svalbard and Jan Mayen 79.455°, 5.261°	10.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.7 earthquake 262 km WNW of Longyearbyen, Svalbard and Jan Mayen came in on October 17, 2021 at 20:37 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 20:17:14 UTC	2.4ml	7km S of Redlands, CA 33.989°, -117.181°	14.4 km	2	-	-	✓ Reviewed	USGS →
October 17, 2021 brought a magnitude 2.4 earthquake 7km S of Redlands, CA, logged at 20:17 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 20:13:31 UTC	4.4mwr	1 km ENE of Lezhë, Albania 41.789°, 19.655°	30.0 km	13	-	-	✓ Reviewed	USGS →
On October 17, 2021 at 20:13 UTC, a magnitude 4.4 earthquake struck 1 km ENE of Lezhë, Albania. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 20:11:58 UTC	4.4mb	81 km S of Jurm, Afghanistan 36.138°, 70.722°	91.1 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.4 earthquake was recorded 81 km S of Jurm, Afghanistan on October 17, 2021 at 20:11 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 19:41:25 UTC	2.0ml	59 km SSW of Whites City, New Mexico 31.657°, -104.552°	7.2 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.0 seismic event took place 59 km SSW of Whites City, New Mexico on October 17, 2021 at 19:41 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 19:34:03 UTC	2.1md	7km E of Mammoth Lakes, CA 37.627°, -118.897°	2.6 km	-	-	-	✓ Reviewed	USGS →
On October 17, 2021 at 19:34 UTC, a magnitude 2.1 earthquake struck 7km E of Mammoth Lakes, CA. 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.
2021-10-17 2021-10-17 19:33:57 UTC	2.4ml	28 km SSW of Elk City, Idaho 45.589°, -115.558°	13.2 km	-	-	-	✓ Reviewed	USGS →
On October 17, 2021 at 19:33 UTC, a magnitude 2.4 earthquake struck 28 km SSW of Elk City, Idaho. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 19:32:24 UTC	3.0ml	126 km SE of Perryville, Alaska 55.158°, -157.643°	27.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 3.0 earthquake 126 km SE of Perryville, Alaska at 19:32 UTC on October 17, 2021. This event falls inside the aftershock decay of a nearby magnitude 4.2 earthquake that occurred about 1 hours earlier. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 19:27:11 UTC	4.2ml	137 km SE of Perryville, Alaska 55.052°, -157.592°	33.9 km	-	I	green	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.2 earthquake 137 km SE of Perryville, Alaska with origin time 19:27 UTC on October 17, 2021. 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 M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 19:00:11 UTC	3.4ml	40 km W of Mentone, Texas 31.708°, -104.022°	7.7 km	-	-	-	✓ Reviewed	USGS →
On October 17, 2021 at 19:00 UTC, a magnitude 3.4 earthquake struck 40 km W of Mentone, Texas. The event was offshore. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 17:50:50 UTC	4.6mb	30 km S of Severomuysk, Russia 55.871°, 113.379°	10.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.6 earthquake was recorded 30 km S of Severomuysk, Russia on October 17, 2021 at 17:50 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 17:39:14 UTC	5.1mb	Kuril Islands 49.147°, 155.933°	35.0 km	-	-	-	✓ Reviewed	USGS →
On October 17, 2021 at 17:39 UTC, a magnitude 5.1 earthquake struck near Kuril Islands. It is the largest earthquake currently listed for worldwide seismic activity on October 17, 2021. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 17:20:54 UTC	4.6mb	South Sandwich Islands region -58.108°, -23.633°	10.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.6 earthquake in the South Sandwich Islands region with origin time 17:20 UTC on October 17, 2021. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 17:16:06 UTC	4.2mb	141 km SSE of Sarangani, Philippines 4.177°, 125.822°	84.1 km	-	-	-	✓ Reviewed	USGS →
On October 17, 2021, worldwide seismic activity registered a magnitude 4.2 earthquake 141 km SSE of Sarangani, Philippines at 17:16 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 17:15:32 UTC	2.0ml	15km ESE of Olancha, CA 36.214°, -117.858°	5.2 km	-	-	-	✓ Reviewed	USGS →
October 17, 2021 brought a magnitude 2.0 earthquake 15km ESE of Olancha, CA, logged at 17:15 UTC. It arrived roughly 4 hours after a larger magnitude 4.0 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 17:14:57 UTC	2.3md	4 km S of P?hala, Hawaii 19.161°, -155.478°	32.0 km	-	-	-	Auto	USGS →
This magnitude 2.3 event was detected 4 km S of P?hala, Hawaii on October 17, 2021, with origin time 17:14 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.9 earthquake that occurred about 1 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-17 2021-10-17 16:58:41 UTC	2.9ml	39 km W of Mentone, Texas 31.714°, -104.020°	7.6 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.9 seismic event took place 39 km W of Mentone, Texas on October 17, 2021 at 16:58 UTC. The event was offshore. See the M2.9 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 October 17, 2021. 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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