Earthquakes on April 8, 2021
319
EARTHQUAKES on April 8, 2021
24-hour UTC period · USGS data
LARGEST: M5.5 — 28 km SE of Cantwell, Alaska
80 km deep · 1,975 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
36
M3.0–3.9
13
M2.0–2.9
74
M1.0–1.9
191
Activity Summary
319
Total earthquakes
~250
Daily average
Elevated
Activity level
5
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.5
28 km SE of Cantwell, Alaska
17:10 UTC · 80.1 km deep
Felt by 1,975
5.4
southern East Pacific Rise
10:25 UTC · 10.0 km deep
5.2
116 km N of Isangel, Vanuatu
01:13 UTC · 264.1 km deep
5.1
Kermadec Islands region
01:00 UTC · 10.0 km deep
5.0
273 km NNW of Gorontalo, Indonesia
05:26 UTC · 542.6 km deep
4.8
Kermadec Islands region
17:31 UTC · 10.0 km deep
4.7
New Britain region, Papua New Guinea
23:04 UTC · 11.7 km deep
4.7
South Sandwich Islands region
16:29 UTC · 77.9 km deep
Earthquake Map — April 8, 2021
All Earthquakes — April 8, 2021
Showing 30 of 128 (filtered from 319)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-04-08 2021-04-08 23:59:04 UTC | 3.0ml | 107 km SSE of Sand Point, Alaska 54.433°, -159.904° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 8, 2021, worldwide seismic activity registered a magnitude 3.0 earthquake 107 km SSE of Sand Point, Alaska at 23:59 UTC. Coming 18 hours after a magnitude 3.3 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 23:40:03 UTC | 2.2ml | 19 km WNW of Stanley, Idaho 44.274°, -115.172° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 19 km WNW of Stanley, Idaho on April 8, 2021 at 23:40 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 23:24:47 UTC | 2.2ml | 42 km WNW of Anchor Point, Alaska 59.894°, -152.561° | 78.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 42 km WNW of Anchor Point, Alaska at 23:24 UTC on April 8, 2021. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 23:10:23 UTC | 2.5ml | 65 km SSW of Adak, Alaska 51.321°, -176.940° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:10 UTC on April 8, 2021, a magnitude 2.5 tremor occurred 65 km SSW of Adak, Alaska. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 23:04:31 UTC | 4.7mb | New Britain region, Papua New Guinea -6.335°, 151.611° | 11.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.7 event was detected in the New Britain region, Papua New Guinea on April 8, 2021, with origin time 23:04 UTC. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 22:12:10 UTC | 3.9md | 11 km E of Boca de Yuma, Dominican Republic 18.362°, -68.501° | 138.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.9 earthquake was recorded 11 km E of Boca de Yuma, Dominican Republic on April 8, 2021 at 22:12 UTC. The event was offshore. See the M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 22:10:28 UTC | 2.1ml | 6 km NW of Kinta, Oklahoma 35.151°, -95.292° | 6.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 6 km NW of Kinta, Oklahoma at 22:10 UTC on April 8, 2021. It arrived roughly 4 hours after a larger magnitude 2.5 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. | ||||||||
2021-04-08 2021-04-08 22:03:30 UTC | 4.4mb | 9 km W of Y?kaichiba, Japan 35.706°, 140.447° | 56.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 seismic event took place 9 km W of Y?kaichiba, Japan on April 8, 2021 at 22:03 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 21:40:53 UTC | 2.5md | 18km WNW of Petrolia, CA 40.382°, -124.478° | 28.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 18km WNW of Petrolia, CA came in on April 8, 2021 at 21:40 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 21:34:05 UTC | 2.1md | 6 km ESE of La Parguera, Puerto Rico 17.961°, -66.982° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 8, 2021 at 21:34 UTC, a magnitude 2.1 earthquake struck 6 km ESE of La Parguera, Puerto Rico. This event falls inside the aftershock decay of a nearby magnitude 2.9 earthquake that occurred about 16 hours earlier. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 20:51:15 UTC | 3.6ml | 12km ENE of Ridgecrest, CA 35.654°, -117.550° | 8.3 km | 121 | III | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.6 earthquake 12km ENE of Ridgecrest, CA at 20:51 UTC on April 8, 2021. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 20:33:17 UTC | 2.3md | 5km NW of The Geysers, CA 38.806°, -122.796° | 3.4 km | 2 | - | - | ✓ Reviewed | USGS → |
April 8, 2021 brought a magnitude 2.3 earthquake 5km NW of The Geysers, CA, logged at 20:33 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 20:25:16 UTC | 2.0ml | 18 km N of Petersville, Alaska 62.665°, -150.743° | 87.8 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 18 km N of Petersville, Alaska came in on April 8, 2021 at 20:25 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 19:41:10 UTC | 4.4mb | 93 km SSE of Lakatoro, Vanuatu -16.855°, 167.807° | 218.3 km | - | - | - | ✓ Reviewed | USGS → |
April 8, 2021 brought a magnitude 4.4 earthquake 93 km SSE of Lakatoro, Vanuatu, logged at 19:41 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 19:27:46 UTC | 2.6ml | 115 km S of Atka, Alaska 51.157°, -174.273° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place 115 km S of Atka, Alaska on April 8, 2021 at 19:27 UTC. Coming 1 hours after a magnitude 2.7 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. | ||||||||
2021-04-08 2021-04-08 19:16:26 UTC | 2.1ml | 23 km ENE of Elk City, Idaho 45.909°, -115.155° | 10.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 23 km ENE of Elk City, Idaho on April 8, 2021, with origin time 19:16 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 19:10:18 UTC | 2.8ml | 9 km SW of Elkford, Canada 49.979°, -114.971° | -2.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 8, 2021, worldwide seismic activity registered a magnitude 2.8 earthquake 9 km SW of Elkford, Canada at 19:10 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. | ||||||||
2021-04-08 2021-04-08 19:03:57 UTC | 4.3mb | Kermadec Islands region -28.342°, -177.200° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected in the Kermadec Islands region on April 8, 2021, with origin time 19:03 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 18:59:12 UTC | 2.1ml | 44 km SSW of Nanwalek, Alaska 59.009°, -152.323° | 74.3 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 44 km SSW of Nanwalek, Alaska came in on April 8, 2021 at 18:59 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 18:33:40 UTC | 2.5ml | 5 km WNW of Kinta, Oklahoma 35.145°, -95.290° | 6.5 km | 2 | - | - | ✓ Reviewed | USGS → |
On April 8, 2021, worldwide seismic activity registered a magnitude 2.5 earthquake 5 km WNW of Kinta, Oklahoma at 18:33 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 M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 18:28:04 UTC | 2.1md | 5 km E of P?hala, Hawaii 19.203°, -155.428° | 35.3 km | - | - | - | Auto | USGS → |
At 18:28 UTC on April 8, 2021, a magnitude 2.1 tremor occurred 5 km E of P?hala, Hawaii. Coming 15 hours after a magnitude 2.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 18:20:56 UTC | 4.4mb | 91 km ENE of Lakatoro, Vanuatu -15.827°, 168.225° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 8, 2021 at 18:20 UTC, a magnitude 4.4 earthquake struck 91 km ENE of Lakatoro, Vanuatu. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 18:19:58 UTC | 2.7ml | 121 km S of Atka, Alaska 51.102°, -174.305° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 121 km S of Atka, Alaska on April 8, 2021, with origin time 18:19 UTC. The event was offshore. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 18:05:57 UTC | 2.2ml | 9 km SSE of Smiley, Texas 29.182°, -97.604° | 7.7 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 9 km SSE of Smiley, Texas on April 8, 2021, with origin time 18:05 UTC. It arrived roughly 1 hours after a larger magnitude 2.8 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. | ||||||||
2021-04-08 2021-04-08 17:48:54 UTC | 4.2mb | Minahasa, Sulawesi, Indonesia 1.270°, 124.084° | 235.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.2 earthquake near Minahasa, Sulawesi, Indonesia with origin time 17:48 UTC on April 8, 2021. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 17:47:04 UTC | 2.1ml | 54 km S of Whites City, New Mexico 31.688°, -104.306° | 6.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 54 km S of Whites City, New Mexico on April 8, 2021 at 17:47 UTC. It arrived roughly 1 hours after a larger magnitude 3.2 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. | ||||||||
2021-04-08 2021-04-08 17:43:29 UTC | 2.8ml | 9 km SSE of Smiley, Texas 29.186°, -97.609° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
On April 8, 2021 at 17:43 UTC, a magnitude 2.8 earthquake struck 9 km SSE of Smiley, Texas. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 17:40:42 UTC | 4.4mb | 55 km SW of Meulaboh, Indonesia 3.785°, 95.775° | 66.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 55 km SW of Meulaboh, Indonesia on April 8, 2021 at 17:40 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 17:31:29 UTC | 4.8mb | Kermadec Islands region -28.489°, -176.935° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.8 earthquake in the Kermadec Islands region at 17:31 UTC on April 8, 2021. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-08 2021-04-08 17:12:15 UTC | 2.0ml | 59 km S of Whites City, New Mexico 31.643°, -104.455° | 6.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 59 km S of Whites City, New Mexico on April 8, 2021 at 17:12 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 1 hours earlier. The event was offshore. 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 8, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.