Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2021-10-30 2021-10-30 23:45:34 UTC	2.5ml	136 km SW of Nikolski, Alaska 52.051°, -170.244°	18.9 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.5 earthquake 136 km SW of Nikolski, Alaska came in on October 30, 2021 at 23:45 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 23:24:16 UTC	2.5md	19km W of Petrolia, CA 40.351°, -124.507°	19.4 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.5 earthquake 19km W of Petrolia, CA with origin time 23:24 UTC on October 30, 2021. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 23:23:14 UTC	2.2md	6km NW of Walker, CA 38.544°, -119.536°	4.7 km	-	-	-	✓ Reviewed	USGS →
At 23:23 UTC on October 30, 2021, a magnitude 2.2 tremor occurred 6km NW of Walker, CA. 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.
2021-10-30 2021-10-30 23:02:41 UTC	4.1mb	56 km WNW of Constitución, Chile -35.175°, -73.004°	12.6 km	-	-	-	✓ Reviewed	USGS →
October 30, 2021 brought a magnitude 4.1 earthquake 56 km WNW of Constitución, Chile, logged at 23:02 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 22:52:07 UTC	2.1ml	46 km E of Pedro Bay, Alaska 59.746°, -153.285°	113.1 km	-	-	-	✓ Reviewed	USGS →
At 22:52 UTC on October 30, 2021, a magnitude 2.1 tremor occurred 46 km E of Pedro Bay, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 22:35:25 UTC	2.0ml	2 km S of P?hala, Hawaii 19.185°, -155.480°	34.8 km	-	-	-	Auto	USGS →
At 22:35 UTC on October 30, 2021, a magnitude 2.0 tremor occurred 2 km S of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 5 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 22:23:47 UTC	2.2ml	1 km SSE of P?hala, Hawaii 19.192°, -155.471°	35.0 km	1	-	-	Auto	USGS →
This magnitude 2.2 event was detected 1 km SSE of P?hala, Hawaii on October 30, 2021, with origin time 22:23 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 5 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 22:22:24 UTC	4.5mb	137 km SSE of ‘Ohonua, Tonga -22.461°, -174.404°	10.0 km	-	-	-	✓ Reviewed	USGS →
At 22:22 UTC on October 30, 2021, a magnitude 4.5 tremor occurred 137 km SSE of ‘Ohonua, Tonga. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 21:36:18 UTC	3.7mb	53 km WSW of Attu Station, Alaska 52.634°, 172.479°	41.6 km	-	-	-	✓ Reviewed	USGS →
On October 30, 2021 at 21:36 UTC, a magnitude 3.7 earthquake struck 53 km WSW of Attu Station, Alaska. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 21:27:13 UTC	2.9md	10 km SW of Guánica, Puerto Rico 17.895°, -66.969°	10.0 km	-	-	-	✓ Reviewed	USGS →
On October 30, 2021 at 21:27 UTC, a magnitude 2.9 earthquake struck 10 km SW of Guánica, Puerto Rico. Coming 9 hours after a magnitude 3.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 21:14:18 UTC	2.4ml	7 km E of P?hala, Hawaii 19.206°, -155.408°	33.3 km	-	-	-	Auto	USGS →
October 30, 2021 brought a magnitude 2.4 earthquake 7 km E of P?hala, Hawaii, logged at 21:14 UTC. It arrived roughly 4 hours after a larger magnitude 3.0 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 21:10:36 UTC	3.2ml	19 km ESE of Wright, Wyoming 43.710°, -105.253°	0.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 3.2 earthquake 19 km ESE of Wright, Wyoming at 21:10 UTC on October 30, 2021. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 20:36:15 UTC	2.4ml	111 km E of Chignik, Alaska 56.348°, -156.604°	46.1 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.4 earthquake 111 km E of Chignik, Alaska at 20:36 UTC on October 30, 2021. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 20:31:28 UTC	4.9mb	Mid-Indian Ridge -27.693°, 73.903°	10.0 km	-	-	-	✓ Reviewed	USGS →
At 20:31 UTC on October 30, 2021, a magnitude 4.9 tremor occurred near Mid-Indian Ridge. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 20:28:14 UTC	2.5ml	219 km SW of Yakutat, Alaska 58.445°, -142.899°	10.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.5 seismic event took place 219 km SW of Yakutat, Alaska on October 30, 2021 at 20:28 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 20:03:11 UTC	3.8md	Mona Passage 18.117°, -68.357°	108.0 km	-	-	-	✓ Reviewed	USGS →
October 30, 2021 brought a magnitude 3.8 earthquake near Mona Passage, logged at 20:03 UTC. See the M3.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 19:49:01 UTC	2.1md	4 km S of P?hala, Hawaii 19.164°, -155.473°	35.4 km	-	-	-	Auto	USGS →
On October 30, 2021 at 19:49 UTC, a magnitude 2.1 earthquake struck 4 km S of P?hala, Hawaii. 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. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 19:48:53 UTC	2.1ml	Alaska Peninsula 58.958°, -154.551°	136.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.1 earthquake near Alaska Peninsula at 19:48 UTC on October 30, 2021. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 19:24:04 UTC	2.0ml	211 km W of Adak, Alaska 51.784°, -179.699°	111.7 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.0 earthquake 211 km W of Adak, Alaska came in on October 30, 2021 at 19:24 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 19:00:58 UTC	4.6mb	Kermadec Islands, New Zealand -30.390°, -177.763°	35.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.6 earthquake near Kermadec Islands, New Zealand with origin time 19:00 UTC on October 30, 2021. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 18:28:52 UTC	2.4ml	4 km S of P?hala, Hawaii 19.158°, -155.477°	31.7 km	-	-	-	Auto	USGS →
At 18:28 UTC on October 30, 2021, a magnitude 2.4 tremor occurred 4 km S of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 1 hours earlier. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 18:01:51 UTC	3.9mb	259 km ESE of Attu Station, Alaska 51.985°, 176.730°	100.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 3.9 earthquake 259 km ESE of Attu Station, Alaska came in on October 30, 2021 at 18:01 UTC. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 17:24:04 UTC	4.8mb	central Mid-Atlantic Ridge 0.581°, -25.382°	10.0 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.8 event was detected near central Mid-Atlantic Ridge on October 30, 2021, with origin time 17:24 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 17:12:50 UTC	4.1mb	Pagan region, Northern Mariana Islands 18.603°, 145.381°	278.0 km	-	-	-	✓ Reviewed	USGS →
On October 30, 2021 at 17:12 UTC, a magnitude 4.1 earthquake struck in the Pagan region, Northern Mariana Islands. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 17:09:54 UTC	3.0ml	8 km ENE of P?hala, Hawaii 19.235°, -155.403°	32.5 km	-	-	-	✓ Reviewed	USGS →
A magnitude 3.0 seismic event took place 8 km ENE of P?hala, Hawaii on October 30, 2021 at 17:09 UTC. In the 72 hours after this event, the USGS recorded 10 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 16:29:09 UTC	4.2mb	27 km SSW of Padam, India 33.244°, 76.758°	10.0 km	-	-	-	✓ Reviewed	USGS →
At 16:29 UTC on October 30, 2021, a magnitude 4.2 tremor occurred 27 km SSW of Padam, India. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 16:15:16 UTC	2.0ml	56 km S of Whites City, New Mexico 31.665°, -104.381°	7.6 km	1	-	-	✓ Reviewed	USGS →
A magnitude 2.0 seismic event took place 56 km S of Whites City, New Mexico on October 30, 2021 at 16:15 UTC. Coming 5 hours after a magnitude 2.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 16:11:37 UTC	3.2ml	51 km WSW of Captain Cook, Hawaii 19.255°, -156.345°	37.2 km	2	-	-	✓ Reviewed	USGS →
This magnitude 3.2 event was detected 51 km WSW of Captain Cook, Hawaii on October 30, 2021, with origin time 16:11 UTC. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 16:09:37 UTC	4.7mb	73 km WNW of Basco, Philippines 20.653°, 121.301°	29.2 km	3	-	-	✓ Reviewed	USGS →
A magnitude 4.7 seismic event took place 73 km WNW of Basco, Philippines on October 30, 2021 at 16:09 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-30 2021-10-30 16:00:31 UTC	2.6ml	9 km ENE of Gardendale, Texas 32.040°, -102.283°	7.7 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.6 event was detected 9 km ENE of Gardendale, Texas on October 30, 2021, with origin time 16:00 UTC. See the M2.6 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 30, 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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