Earthquakes on April 15, 2021
253
EARTHQUAKES on April 15, 2021
24-hour UTC period · USGS data
19 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
35
M3.0–3.9
6
M2.0–2.9
49
M1.0–1.9
160
Activity Summary
253
Total earthquakes
~250
Daily average
Normal
Activity level
3
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.4
207 km SSE of Praya, Indonesia
10:36 UTC · 19.0 km deep
5.3
134 km NW of Attu Station, Alaska
08:33 UTC · 11.4 km deep
5.0
Mariana Islands region
04:44 UTC · 10.0 km deep
4.9
106 km SW of Santiago de Cao, Peru
19:16 UTC · 35.0 km deep
4.7
Kuril Islands
23:57 UTC · 10.0 km deep
4.7
south of Tonga
08:03 UTC · 37.5 km deep
4.6
140 km NE of Sar?han, India
22:26 UTC · 10.0 km deep
Felt by 1
4.6
132 km SSW of Manuel Ávila Camacho (Ponte Duro), Mexico
18:10 UTC · 10.0 km deep
Earthquake Map — April 15, 2021
All Earthquakes — April 15, 2021
Showing 30 of 93 (filtered from 253)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-04-15 2021-04-15 23:57:07 UTC | 4.7mb | Kuril Islands 46.141°, 152.911° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:57 UTC on April 15, 2021, a magnitude 4.7 tremor occurred near Kuril Islands. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 23:36:50 UTC | 4.1mb | 201 km SE of Kokopo, Papua New Guinea -5.402°, 153.753° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 15, 2021, worldwide seismic activity registered a magnitude 4.1 earthquake 201 km SE of Kokopo, Papua New Guinea at 23:36 UTC. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 23:16:19 UTC | 2.6ml | 36km WSW of Stovepipe Wells, CA 36.477°, -117.519° | -0.7 km | 2 | - | - | ✓ Reviewed | USGS → |
On April 15, 2021 at 23:16 UTC, a magnitude 2.6 earthquake struck 36km WSW of Stovepipe Wells, CA. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 22:43:28 UTC | 4.2mb | 250 km WSW of Tual, Indonesia -6.214°, 130.566° | 125.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 seismic event took place 250 km WSW of Tual, Indonesia on April 15, 2021 at 22:43 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 22:26:24 UTC | 4.6mb | 140 km NE of Sar?han, India 32.479°, 78.750° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected 140 km NE of Sar?han, India on April 15, 2021, with origin time 22:26 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 22:25:49 UTC | 3.1ml | 9 km S of Coyanosa, Texas 31.155°, -103.047° | 4.0 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 9 km S of Coyanosa, Texas on April 15, 2021 at 22:25 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 22:24:38 UTC | 3.2ml | 71 km S of Sand Point, Alaska 54.702°, -160.643° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
April 15, 2021 brought a magnitude 3.2 earthquake 71 km S of Sand Point, Alaska, logged at 22:24 UTC. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 21:30:43 UTC | 2.8md | 5 km E of La Parguera, Puerto Rico 17.980°, -66.991° | 13.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 5 km E of La Parguera, Puerto Rico on April 15, 2021, with origin time 21:30 UTC. The event was offshore. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 21:22:48 UTC | 2.1ml | 16 km S of Sparwood, Canada 49.586°, -114.862° | -2.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 16 km S of Sparwood, Canada with origin time 21:22 UTC on April 15, 2021. This is the shallowest earthquake in the current dataset — a shallow crustal event. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 20:47:55 UTC | 4.4mb | 26 km SW of Date, Japan 42.323°, 140.614° | 42.8 km | - | - | - | ✓ Reviewed | USGS → |
At 20:47 UTC on April 15, 2021, a magnitude 4.4 tremor occurred 26 km SW of Date, Japan. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 20:23:25 UTC | 4.1mb | 125 km ESE of Kuril’sk, Russia 44.754°, 149.322° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:23 UTC on April 15, 2021, a magnitude 4.1 tremor occurred 125 km ESE of Kuril’sk, Russia. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 20:11:31 UTC | 4.3mb | Pagan region, Northern Mariana Islands 18.403°, 145.767° | 187.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake in the Pagan region, Northern Mariana Islands with origin time 20:11 UTC on April 15, 2021. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 20:04:20 UTC | 2.7ml | 31 km SW of Cantwell, Alaska 63.173°, -149.388° | 88.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.7 seismic event took place 31 km SW of Cantwell, Alaska on April 15, 2021 at 20:04 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 20:02:02 UTC | 4.4mb | Kermadec Islands region -29.528°, -176.985° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake in the Kermadec Islands region at 20:02 UTC on April 15, 2021. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 19:19:56 UTC | 4.3mb | 75 km SSW of Santiago Tepextla, Mexico 15.671°, -98.597° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 15, 2021, worldwide seismic activity registered a magnitude 4.3 earthquake 75 km SSW of Santiago Tepextla, Mexico at 19:19 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 19:16:31 UTC | 4.9mb | 106 km SW of Santiago de Cao, Peru -8.665°, -79.900° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 15, 2021, worldwide seismic activity registered a magnitude 4.9 earthquake 106 km SW of Santiago de Cao, Peru at 19:16 UTC. The event was offshore. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 18:10:01 UTC | 4.6mb | 132 km SSW of Manuel Ávila Camacho (Ponte Duro), Mexico 14.765°, -94.187° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake 132 km SSW of Manuel Ávila Camacho (Ponte Duro), Mexico came in on April 15, 2021 at 18:10 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 18:05:03 UTC | 3.1ml | 14km ENE of Ridgecrest, CA 35.679°, -117.537° | 6.8 km | 12 | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.1 earthquake 14km ENE of Ridgecrest, CA with origin time 18:05 UTC on April 15, 2021. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 17:35:58 UTC | 2.0ml | 3 km SSW of Mill Creek, Oklahoma 34.377°, -96.846° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 15, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 3 km SSW of Mill Creek, Oklahoma at 17:35 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 16:53:26 UTC | 3.2md | Mona Passage 18.919°, -68.722° | 69.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 15, 2021 at 16:53 UTC, a magnitude 3.2 earthquake struck near Mona Passage. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 16:42:04 UTC | 4.6mb | 34 km SSW of Turt, Mongolia 51.244°, 100.400° | 18.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 seismic event took place 34 km SSW of Turt, Mongolia on April 15, 2021 at 16:42 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 16:05:02 UTC | 2.2md | 5 km SSE of P?hala, Hawaii 19.150°, -155.467° | 33.4 km | - | - | - | Auto | USGS → |
This magnitude 2.2 event was detected 5 km SSE of P?hala, Hawaii on April 15, 2021, with origin time 16:05 UTC. It arrived roughly 2 hours after a larger magnitude 2.6 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. | ||||||||
2021-04-15 2021-04-15 15:41:12 UTC | 4.3mb | south of the Fiji Islands -26.491°, -179.871° | 535.9 km | - | - | - | ✓ Reviewed | USGS → |
At 15:41 UTC on April 15, 2021, a magnitude 4.3 tremor occurred south of the Fiji Islands. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 15:19:53 UTC | 2.3md | 4 km SSW of P?hala, Hawaii 19.164°, -155.489° | 34.7 km | - | - | - | Auto | USGS → |
At 15:19 UTC on April 15, 2021, a magnitude 2.3 tremor occurred 4 km SSW of P?hala, Hawaii. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 1 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 15:17:40 UTC | 2.3ml | 3 km SW of P?hala, Hawaii 19.183°, -155.503° | 32.9 km | - | - | - | Auto | USGS → |
April 15, 2021 brought a magnitude 2.3 earthquake 3 km SW of P?hala, Hawaii, logged at 15:17 UTC. Coming 1 hours after a magnitude 2.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 15:05:09 UTC | 2.5ml | 33 km NE of Benton, California 38.071°, -118.263° | 6.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 33 km NE of Benton, California on April 15, 2021, with origin time 15:05 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 15:01:06 UTC | 2.1ml | 16km W of Searles Valley, CA 35.766°, -117.582° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 16km W of Searles Valley, CA at 15:01 UTC on April 15, 2021. In the 72 hours after this event, the USGS recorded 3 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 14:53:13 UTC | 2.6ml | 21 km E of Skwentna, Alaska 62.014°, -150.989° | 70.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 21 km E of Skwentna, Alaska on April 15, 2021 at 14:53 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 14:32:55 UTC | 2.1md | 5 km SSE of P?hala, Hawaii 19.154°, -155.459° | 34.8 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.1 earthquake 5 km SSE of P?hala, Hawaii came in on April 15, 2021 at 14:32 UTC. Coming 1 hours after a magnitude 2.6 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-15 2021-04-15 14:26:42 UTC | 2.6md | 3 km W of P?hala, Hawaii 19.198°, -155.512° | 35.2 km | - | - | - | ✓ Reviewed | USGS → |
April 15, 2021 brought a magnitude 2.6 earthquake 3 km W of P?hala, Hawaii, logged at 14:26 UTC. In the 72 hours after this event, the USGS recorded 12 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. 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 April 15, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.