Earthquakes on April 1, 2021
302
EARTHQUAKES on April 1, 2021
24-hour UTC period · USGS data
LARGEST: M6.4 — Kermadec Islands, New Zealand
20 km deep · 1 person felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
5
M4.0–4.9
42
M3.0–3.9
9
M2.0–2.9
65
M1.0–1.9
181
Activity Summary
302
Total earthquakes
~250
Daily average
Elevated
Activity level
5
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.4
Kermadec Islands, New Zealand
09:56 UTC · 20.0 km deep
Felt by 1
6.0
Fiji region
15:11 UTC · 595.0 km deep
Felt by 1
5.6
Kermadec Islands, New Zealand
22:10 UTC · 10.0 km deep
5.4
242 km SE of Sarangani, Philippines
10:12 UTC · 40.3 km deep
Felt by 1
5.1
South Sandwich Islands region
22:02 UTC · 54.5 km deep
4.9
160 km SW of Merizo Village, Guam
03:02 UTC · 10.0 km deep
Felt by 1
4.8
21 km WSW of Guelma, Algeria
14:33 UTC · 10.0 km deep
Felt by 4
4.8
Kermadec Islands region
11:58 UTC · 10.0 km deep
Earthquake Map — April 1, 2021
All Earthquakes — April 1, 2021
Showing 30 of 121 (filtered from 302)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-04-01 2021-04-01 23:59:42 UTC | 2.1md | 5 km WNW of Tiptonville, Tennessee 36.392°, -89.531° | 9.3 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.1 event was detected 5 km WNW of Tiptonville, Tennessee on April 1, 2021, with origin time 23:59 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 23:56:11 UTC | 2.0ml | 53 km S of Whites City, New Mexico 31.697°, -104.394° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 1, 2021 at 23:56 UTC, a magnitude 2.0 earthquake struck 53 km S of Whites City, New Mexico. Coming 4 hours after a magnitude 3.9 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. | ||||||||
2021-04-01 2021-04-01 23:36:45 UTC | 2.1md | 1 km W of Yauco, Puerto Rico 18.035°, -66.868° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 1 km W of Yauco, Puerto Rico with origin time 23:36 UTC on April 1, 2021. It arrived roughly 7 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. | ||||||||
2021-04-01 2021-04-01 23:18:17 UTC | 3.1ml | 18 km NNE of Arvada, Wyoming 44.805°, -106.040° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 earthquake was recorded 18 km NNE of Arvada, Wyoming on April 1, 2021 at 23:18 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. | ||||||||
2021-04-01 2021-04-01 23:16:59 UTC | 2.0ml | 70 km ESE of Cantwell, Alaska 63.158°, -147.648° | 8.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 earthquake was recorded 70 km ESE of Cantwell, Alaska on April 1, 2021 at 23:16 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 23:00:41 UTC | 2.6ml | 54 km S of Whites City, New Mexico 31.689°, -104.397° | 6.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 54 km S of Whites City, New Mexico at 23:00 UTC on April 1, 2021. Coming 3 hours after a magnitude 3.9 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. | ||||||||
2021-04-01 2021-04-01 22:51:36 UTC | 4.4mb | Kepulauan Babar, Indonesia -7.161°, 129.425° | 158.7 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake near Kepulauan Babar, Indonesia at 22:51 UTC on April 1, 2021. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 22:41:58 UTC | 4.3mb | Maug Islands region, Northern Mariana Islands 19.279°, 145.411° | 211.9 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.3 event was detected in the Maug Islands region, Northern Mariana Islands on April 1, 2021, with origin time 22:41 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 22:19:33 UTC | 4.2mb | Fiji region -19.112°, -177.499° | 567.7 km | - | - | - | ✓ Reviewed | USGS → |
On April 1, 2021 at 22:19 UTC, a magnitude 4.2 earthquake struck in the Fiji region. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 22:10:11 UTC | 5.6mww | Kermadec Islands, New Zealand -30.023°, -177.467° | 10.0 km | - | III | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.6 earthquake near Kermadec Islands, New Zealand with origin time 22:10 UTC on April 1, 2021. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 22:07:00 UTC | 2.3ml | 3 km ESE of P?hala, Hawaii 19.186°, -155.452° | 31.5 km | - | - | - | Auto | USGS → |
This magnitude 2.3 event was detected 3 km ESE of P?hala, Hawaii on April 1, 2021, with origin time 22:07 UTC. Coming 4 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 22:02:20 UTC | 5.1mb | South Sandwich Islands region -59.576°, -26.237° | 54.5 km | - | - | - | ✓ Reviewed | USGS → |
At 22:02 UTC on April 1, 2021, a magnitude 5.1 tremor occurred in the South Sandwich Islands region. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 21:51:16 UTC | 4.3mb | 211 km SSE of Katsuura, Japan 33.414°, 141.282° | 29.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.3 earthquake 211 km SSE of Katsuura, Japan came in on April 1, 2021 at 21:51 UTC. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 21:41:38 UTC | 2.3md | 3km NE of The Geysers, CA 38.795°, -122.738° | 1.6 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 3km NE of The Geysers, CA on April 1, 2021 at 21:41 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. | ||||||||
2021-04-01 2021-04-01 20:45:22 UTC | 2.9ml | 13km NW of Ocotillo, CA 32.824°, -116.084° | 7.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.9 earthquake 13km NW of Ocotillo, CA came in on April 1, 2021 at 20:45 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 20:39:20 UTC | 2.1md | 3 km ENE of P?hala, Hawaii 19.216°, -155.451° | 33.4 km | - | - | - | Auto | USGS → |
This magnitude 2.1 event was detected 3 km ENE of P?hala, Hawaii on April 1, 2021, with origin time 20:39 UTC. It arrived roughly 3 hours after a larger magnitude 3.2 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 20:16:04 UTC | 2.1ml | 18km SSE of Lone Pine, CA 36.449°, -117.967° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 1, 2021, worldwide seismic activity registered a magnitude 2.1 earthquake 18km SSE of Lone Pine, CA at 20:16 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 19:57:14 UTC | 4.4mb | 137 km SSW of Merizo Village, Guam 12.190°, 144.037° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 137 km SSW of Merizo Village, Guam on April 1, 2021, with origin time 19:57 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 19:49:55 UTC | 3.9ml | 55 km S of Whites City, New Mexico 31.679°, -104.387° | 6.5 km | 2 | IV | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.9 earthquake 55 km S of Whites City, New Mexico came in on April 1, 2021 at 19:49 UTC. 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 M3.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 19:26:24 UTC | 2.0md | 15 km SSE of Guánica, Puerto Rico 17.840°, -66.855° | 17.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.0 earthquake 15 km SSE of Guánica, Puerto Rico with origin time 19:26 UTC on April 1, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.0 earthquake that occurred about 3 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 19:24:23 UTC | 2.4ml | 58 km WNW of Akhiok, Alaska 57.140°, -155.056° | 46.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.4 earthquake 58 km WNW of Akhiok, Alaska came in on April 1, 2021 at 19:24 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 19:20:06 UTC | 4.6mb | 88 km W of Aykol, China 40.909°, 79.090° | 11.8 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake 88 km W of Aykol, China at 19:20 UTC on April 1, 2021. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 19:09:45 UTC | 4.4mb | 193 km WNW of Haveluloto, Tonga -20.483°, -176.926° | 504.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake 193 km WNW of Haveluloto, Tonga came in on April 1, 2021 at 19:09 UTC. This deep-focus earthquake originated far below the brittle crust, deep inside the mantle. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 19:01:43 UTC | 2.0ml | 109 km NNE of Arctic Village, Alaska 69.055°, -144.689° | 10.3 km | - | - | - | ✓ Reviewed | USGS → |
On April 1, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 109 km NNE of Arctic Village, Alaska at 19:01 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 18:30:05 UTC | 4.2mb | Pagan region, Northern Mariana Islands 18.605°, 145.581° | 198.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.2 earthquake was recorded in the Pagan region, Northern Mariana Islands on April 1, 2021 at 18:30 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 18:17:14 UTC | 2.7ml | 114 km SSE of Sand Point, Alaska 54.374°, -159.894° | 23.1 km | - | - | - | ✓ Reviewed | USGS → |
On April 1, 2021 at 18:17 UTC, a magnitude 2.7 earthquake struck 114 km SSE of Sand Point, Alaska. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 18:03:08 UTC | 4.6mb | Mid-Indian Ridge -7.878°, 67.630° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected near Mid-Indian Ridge on April 1, 2021, with origin time 18:03 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 18:02:19 UTC | 2.3ml | 14km NE of Coso Junction, CA 36.130°, -117.839° | 2.5 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 14km NE of Coso Junction, CA came in on April 1, 2021 at 18:02 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. | ||||||||
2021-04-01 2021-04-01 17:53:05 UTC | 3.2ml | 7 km W of P?hala, Hawaii 19.196°, -155.552° | 9.3 km | 8 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.2 seismic event took place 7 km W of P?hala, Hawaii on April 1, 2021 at 17:53 UTC. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-01 2021-04-01 17:46:16 UTC | 4.6mb | Kermadec Islands, New Zealand -29.994°, -177.423° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake near Kermadec Islands, New Zealand came in on April 1, 2021 at 17:46 UTC. See the M4.6 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 1, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.