Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2021-10-25 2021-10-25 23:49:36 UTC	3.5ml	17km NW of San Simeon, CA 35.769°, -121.304°	6.5 km	35	III	-	✓ Reviewed	USGS →
On October 25, 2021 at 23:49 UTC, a magnitude 3.5 earthquake struck 17km NW of San Simeon, CA. 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 M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 23:42:35 UTC	4.7mw	18km NW of San Simeon, CA 35.776°, -121.304°	7.8 km	619	IV	green	✓ Reviewed	USGS →
On October 25, 2021 at 23:42 UTC, a magnitude 4.7 earthquake struck 18km NW of San Simeon, CA. 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 M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 23:39:22 UTC	4.8mb	97 km SSW of Severo-Kuril’sk, Russia 49.834°, 155.737°	72.3 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.8 event was detected 97 km SSW of Severo-Kuril’sk, Russia on October 25, 2021, with origin time 23:39 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 23:37:57 UTC	2.7ml	18 km NNE of Hermleigh, Texas 32.779°, -100.664°	1.4 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.7 earthquake was recorded 18 km NNE of Hermleigh, Texas on October 25, 2021 at 23:37 UTC. 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.
2021-10-25 2021-10-25 23:31:50 UTC	4.3mb	292 km WSW of Meulaboh, Indonesia 3.526°, 93.569°	10.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.3 seismic event took place 292 km WSW of Meulaboh, Indonesia on October 25, 2021 at 23:31 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 23:29:50 UTC	2.5ml	128 km W of Elfin Cove, Alaska 58.181°, -138.524°	23.4 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.5 earthquake 128 km W of Elfin Cove, Alaska at 23:29 UTC on October 25, 2021. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 23:29:50 UTC	2.5ml	128 km W of Elfin Cove, Alaska 58.181°, -138.524°	23.4 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.5 event was detected 128 km W of Elfin Cove, Alaska on October 25, 2021, with origin time 23:29 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 23:28:04 UTC	2.5ml	174 km SE of Chignik, Alaska 55.346°, -156.179°	37.7 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.5 earthquake 174 km SE of Chignik, Alaska came in on October 25, 2021 at 23:28 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 22:51:06 UTC	3.1ml	93 km SSE of Akutan, Alaska 53.406°, -165.063°	28.5 km	-	-	-	✓ Reviewed	USGS →
A magnitude 3.1 earthquake was recorded 93 km SSE of Akutan, Alaska on October 25, 2021 at 22:51 UTC. Coming 1 hours after a magnitude 3.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 22:35:43 UTC	2.3ml	4 km S of P?hala, Hawaii 19.162°, -155.479°	32.4 km	-	-	-	Auto	USGS →
Reports of a magnitude 2.3 earthquake 4 km S of P?hala, Hawaii came in on October 25, 2021 at 22:35 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 11 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 22:27:05 UTC	2.6md	26 km SSE of Naalehu, Hawaii 18.839°, -155.523°	35.7 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.6 earthquake 26 km SSE of Naalehu, Hawaii with origin time 22:27 UTC on October 25, 2021. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 22:25:09 UTC	2.2md	6km NW of Walker, CA 38.545°, -119.531°	4.5 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.2 earthquake 6km NW of Walker, CA came in on October 25, 2021 at 22:25 UTC. Coming 1 hours after a magnitude 2.9 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 M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 22:17:32 UTC	2.9ml	6km NW of Walker, CA 38.545°, -119.531°	4.2 km	1	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.9 earthquake 6km NW of Walker, CA at 22:17 UTC on October 25, 2021. 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.
2021-10-25 2021-10-25 22:17:18 UTC	2.8ml	6km NW of Walker, CA 38.544°, -119.530°	4.6 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.8 seismic event took place 6km NW of Walker, CA on October 25, 2021 at 22:17 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 22:07:19 UTC	2.2ml	14km WSW of Ludlow, CA 34.656°, -116.289°	5.3 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.2 earthquake 14km WSW of Ludlow, CA with origin time 22:07 UTC on October 25, 2021. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 22:05:11 UTC	5.2mww	71 km SW of Vanimo, Papua New Guinea -3.215°, 140.943°	35.0 km	-	-	-	✓ Reviewed	USGS →
On October 25, 2021 at 22:05 UTC, a magnitude 5.2 earthquake struck 71 km SW of Vanimo, Papua New Guinea. It is the largest earthquake currently listed for worldwide seismic activity on October 25, 2021. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 21:55:13 UTC	2.6ml	78 km ESE of Sand Point, Alaska 55.066°, -159.359°	12.0 km	-	-	-	✓ Reviewed	USGS →
On October 25, 2021, worldwide seismic activity registered a magnitude 2.6 earthquake 78 km ESE of Sand Point, Alaska at 21:55 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 21:54:44 UTC	4.1mb	223 km E of Levuka, Fiji -17.749°, -178.597°	586.1 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.1 earthquake 223 km E of Levuka, Fiji at 21:54 UTC on October 25, 2021. This event falls inside the aftershock decay of a nearby magnitude 4.2 earthquake that occurred about 21 hours earlier. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 21:51:11 UTC	2.2ml	76 km SSE of Akutan, Alaska 53.533°, -165.207°	61.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.2 seismic event took place 76 km SSE of Akutan, Alaska on October 25, 2021 at 21:51 UTC. It arrived roughly 1 hours after a larger magnitude 3.3 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 21:40:30 UTC	3.3ml	83 km SE of Akutan, Alaska 53.524°, -165.040°	27.4 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 3.3 earthquake 83 km SE of Akutan, Alaska at 21:40 UTC on October 25, 2021. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 21:31:55 UTC	2.9ml	125 km SW of Nikolski, Alaska 52.224°, -170.294°	24.4 km	-	-	-	✓ Reviewed	USGS →
On October 25, 2021, worldwide seismic activity registered a magnitude 2.9 earthquake 125 km SW of Nikolski, Alaska at 21:31 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 21:11:41 UTC	3.3md	7 km N of Camuy, Puerto Rico 18.552°, -66.850°	110.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 3.3 earthquake 7 km N of Camuy, Puerto Rico came in on October 25, 2021 at 21:11 UTC. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 20:29:51 UTC	4.8mb	Tristan da Cunha region -35.337°, -15.204°	10.0 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 4.8 earthquake in the Tristan da Cunha region came in on October 25, 2021 at 20:29 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 20:00:34 UTC	2.0ml	56 km WNW of Anchor Point, Alaska 59.933°, -152.782°	98.2 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.0 earthquake 56 km WNW of Anchor Point, Alaska at 20:00 UTC on October 25, 2021. Coming 12 hours after a magnitude 2.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 19:50:40 UTC	2.1md	7km NNW of Pinnacles, CA 36.584°, -121.183°	6.9 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.1 earthquake was recorded 7km NNW of Pinnacles, CA on October 25, 2021 at 19:50 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.2 earthquake that occurred about 3 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 19:30:27 UTC	2.0ml	84 km SSE of Akutan, Alaska 53.445°, -165.245°	22.1 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.0 event was detected 84 km SSE of Akutan, Alaska on October 25, 2021, with origin time 19:30 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 19:24:06 UTC	3.5ml	63 km ESE of Adak, Alaska 51.593°, -175.840°	35.0 km	-	-	-	✓ Reviewed	USGS →
A magnitude 3.5 earthquake was recorded 63 km ESE of Adak, Alaska on October 25, 2021 at 19:24 UTC. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2021-10-25 2021-10-25 19:04:16 UTC	3.3md	4 km SE of La Parguera, Puerto Rico 17.943°, -67.019°	9.0 km	-	-	-	✓ Reviewed	USGS →
October 25, 2021 brought a magnitude 3.3 earthquake 4 km SE of La Parguera, Puerto Rico, logged at 19:04 UTC. It arrived roughly 14 hours after a larger magnitude 3.5 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.
2021-10-25 2021-10-25 19:00:16 UTC	2.2ml	13km SE of Big Bear City, CA 34.184°, -116.737°	0.6 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 2.2 earthquake 13km SE of Big Bear City, CA at 19:00 UTC on October 25, 2021. 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.
2021-10-25 2021-10-25 18:27:18 UTC	2.3md	15 km SSE of Sunnyside, Utah 39.428°, -110.313°	-1.3 km	-	-	-	✓ Reviewed	USGS →
On October 25, 2021, worldwide seismic activity registered a magnitude 2.3 earthquake 15 km SSE of Sunnyside, Utah at 18:27 UTC. In the 72 hours after this event, the USGS recorded 4 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.3 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 October 25, 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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