Time ↓	Mag ↕	Location ↕	Depth ↕	Felt ↕	MMI	Alert	Status	Details
2025-04-21 2025-04-21 23:13:58 UTC	2.3md	6 km SW of Guánica, Puerto Rico 17.941°, -66.956°	8.5 km	-	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.3 earthquake 6 km SW of Guánica, Puerto Rico came in on April 21, 2025 at 23:13 UTC. It arrived roughly 11 hours after a larger magnitude 2.3 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 22:52:27 UTC	4.3mb	168 km NE of Kuril’sk, Russia 46.274°, 149.447°	188.6 km	-	-	-	✓ Reviewed	USGS →
On April 21, 2025 at 22:52 UTC, a magnitude 4.3 earthquake struck 168 km NE of Kuril’sk, Russia. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 22:42:41 UTC	2.0ml	57 km SW of Birch Creek, Alaska 65.863°, -146.614°	18.9 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.0 seismic event took place 57 km SW of Birch Creek, Alaska on April 21, 2025 at 22:42 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 22:27:35 UTC	4.2mb	west of Vancouver Island 51.013°, -136.024°	10.0 km	-	-	-	✓ Reviewed	USGS →
The USGS recorded this magnitude 4.2 earthquake west of Vancouver Island at 22:27 UTC on April 21, 2025. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 22:23:17 UTC	4.8mb	58 km NNW of Yurimaguas, Peru -5.391°, -76.256°	10.0 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 4.8 earthquake 58 km NNW of Yurimaguas, Peru with origin time 22:23 UTC on April 21, 2025. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 22:07:25 UTC	2.6mb_lg	7 km ESE of Marion, Kansas 38.319°, -96.936°	9.8 km	1	-	-	✓ Reviewed	USGS →
Reports of a magnitude 2.6 earthquake 7 km ESE of Marion, Kansas came in on April 21, 2025 at 22:07 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 21:27:58 UTC	4.4mb	54 km E of Modisi, Indonesia 0.367°, 124.922°	10.0 km	-	-	-	✓ Reviewed	USGS →
On April 21, 2025, worldwide seismic activity registered a magnitude 4.4 earthquake 54 km E of Modisi, Indonesia at 21:27 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 21:19:02 UTC	2.5ml	19 km NW of Midland, Texas 32.136°, -102.209°	6.6 km	1	-	-	✓ Reviewed	USGS →
At 21:19 UTC on April 21, 2025, a magnitude 2.5 tremor occurred 19 km NW of Midland, Texas. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 21:13:29 UTC	2.1ml	14 km S of Princeton, Canada 49.326°, -120.512°	-0.2 km	-	-	-	✓ Reviewed	USGS →
This magnitude 2.1 event was detected 14 km S of Princeton, Canada on April 21, 2025, with origin time 21:13 UTC. 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.
2025-04-21 2025-04-21 21:05:00 UTC	2.2ml	47 km N of Petersville, Alaska 62.925°, -150.690°	90.7 km	-	-	-	✓ Reviewed	USGS →
On April 21, 2025 at 21:05 UTC, a magnitude 2.2 earthquake struck 47 km N of Petersville, Alaska. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 20:33:34 UTC	2.0ml	37 km W of Salamatof, Alaska 60.675°, -151.986°	84.4 km	-	-	-	✓ Reviewed	USGS →
April 21, 2025 brought a magnitude 2.0 earthquake 37 km W of Salamatof, Alaska, logged at 20:33 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 19:34:39 UTC	2.6ml	221 km W of Adak, Alaska 51.752°, -179.834°	98.4 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.6 seismic event took place 221 km W of Adak, Alaska on April 21, 2025 at 19:34 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 18:52:49 UTC	2.2ml	47 km NNW of Valdez, Alaska 61.535°, -146.652°	10.7 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.2 earthquake was recorded 47 km NNW of Valdez, Alaska on April 21, 2025 at 18:52 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 7 hours earlier. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 18:23:47 UTC	4.1mb	50 km SE of Honchō, Japan 41.785°, 143.317°	42.2 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.1 seismic event took place 50 km SE of Honchō, Japan on April 21, 2025 at 18:23 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 17:49:09 UTC	2.6ml	106 km N of Ambler, Alaska 68.024°, -158.289°	17.4 km	-	-	-	✓ Reviewed	USGS →
April 21, 2025 brought a magnitude 2.6 earthquake 106 km N of Ambler, Alaska, logged at 17:49 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 17:46:33 UTC	4.5mb	13 km SSE of Bangui, Philippines 18.427°, 120.831°	37.8 km	1	-	-	✓ Reviewed	USGS →
April 21, 2025 brought a magnitude 4.5 earthquake 13 km SSE of Bangui, Philippines, logged at 17:46 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 17:27:19 UTC	2.2ml	45 km ESE of Ugashik, Alaska 57.340°, -156.714°	94.1 km	-	-	-	✓ Reviewed	USGS →
Seismographs logged a magnitude 2.2 earthquake 45 km ESE of Ugashik, Alaska with origin time 17:27 UTC on April 21, 2025. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 17:24:40 UTC	4.0mwr	18 km N of Simav, Turkey 39.249°, 29.016°	9.3 km	-	-	-	✓ Reviewed	USGS →
On April 21, 2025 at 17:24 UTC, a magnitude 4.0 earthquake struck 18 km N of Simav, Turkey. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 17:04:39 UTC	2.0ml	128 km S of Sand Point, Alaska 54.204°, -160.851°	25.6 km	-	-	-	✓ Reviewed	USGS →
On April 21, 2025 at 17:04 UTC, a magnitude 2.0 earthquake struck 128 km S of Sand Point, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 16:48:05 UTC	4.6mb	58 km E of Namie, Japan 37.457°, 141.659°	40.1 km	-	-	-	✓ Reviewed	USGS →
This magnitude 4.6 event was detected 58 km E of Namie, Japan on April 21, 2025, with origin time 16:48 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 16:36:57 UTC	4.4mb	289 km S of Burica, Panama 5.420°, -82.774°	10.0 km	-	-	-	✓ Reviewed	USGS →
At 16:36 UTC on April 21, 2025, a magnitude 4.4 tremor occurred 289 km S of Burica, Panama. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 16:14:46 UTC	4.0mb	Bonin Islands, Japan region 26.492°, 140.570°	425.6 km	-	-	-	✓ Reviewed	USGS →
A magnitude 4.0 earthquake was recorded in the Bonin Islands, Japan region on April 21, 2025 at 16:14 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 16:00:57 UTC	2.6ml	16 km E of King Cove, Alaska 55.054°, -162.064°	8.2 km	-	-	-	✓ Reviewed	USGS →
On April 21, 2025 at 16:00 UTC, a magnitude 2.6 earthquake struck 16 km E of King Cove, Alaska. Coming 1 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 15:46:59 UTC	5.1mb	South Sandwich Islands region -56.081°, -27.877°	119.1 km	-	-	-	✓ Reviewed	USGS →
A magnitude 5.1 earthquake was recorded in the South Sandwich Islands region on April 21, 2025 at 15:46 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 15:31:59 UTC	3.4mb	15 km E of King Cove, Alaska 55.061°, -162.076°	5.6 km	1	-	-	✓ Reviewed	USGS →
On April 21, 2025, worldwide seismic activity registered a magnitude 3.4 earthquake 15 km E of King Cove, Alaska at 15:31 UTC. In the 72 hours after this event, the USGS recorded 7 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M3.4 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 15:27:35 UTC	3.0ml	29 km WNW of Atka, Alaska 52.337°, -174.566°	147.2 km	-	-	-	✓ Reviewed	USGS →
This magnitude 3.0 event was detected 29 km WNW of Atka, Alaska on April 21, 2025, with origin time 15:27 UTC. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 15:18:16 UTC	2.9ml	30 km SSW of Petersville, Alaska 62.266°, -151.080°	68.8 km	1	-	-	✓ Reviewed	USGS →
A magnitude 2.9 seismic event took place 30 km SSW of Petersville, Alaska on April 21, 2025 at 15:18 UTC. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 15:00:00 UTC	2.2ml	11 km W of Stanley, Idaho 44.199°, -115.086°	7.5 km	-	-	-	✓ Reviewed	USGS →
April 21, 2025 brought a magnitude 2.2 earthquake 11 km W of Stanley, Idaho, logged at 15:00 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 14:46:58 UTC	2.6ml	59 km S of False Pass, Alaska 54.327°, -163.304°	52.9 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.6 earthquake was recorded 59 km S of False Pass, Alaska on April 21, 2025 at 14:46 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data.
2025-04-21 2025-04-21 14:17:23 UTC	2.0ml	84 km ENE of Ouzinkie, Alaska 58.335°, -151.305°	25.5 km	-	-	-	✓ Reviewed	USGS →
A magnitude 2.0 earthquake was recorded 84 km ENE of Ouzinkie, Alaska on April 21, 2025 at 14:17 UTC. See the M2.0 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 April 21, 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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