Earthquakes on April 20, 2023
298
EARTHQUAKES on April 20, 2023
24-hour UTC period · USGS data
10 km deep
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
1
M4.0–4.9
28
M3.0–3.9
13
M2.0–2.9
52
M1.0–1.9
204
Activity Summary
298
Total earthquakes
~250
Daily average
Normal
Activity level
1
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
5.4
off the coast of Central America
10:55 UTC · 10.0 km deep
4.9
46 km SW of Pangai, Tonga
13:55 UTC · 80.2 km deep
4.8
158 km SSE of Mata-Utu, Wallis and Futuna
20:03 UTC · 10.0 km deep
4.8
50 km SW of La Gomera, Guatemala
15:00 UTC · 57.3 km deep
4.7
136 km E of Nishinoomote, Japan
18:25 UTC · 16.7 km deep
4.7
off the coast of Central America
09:55 UTC · 10.0 km deep
4.7
71 km SE of Gorontalo, Indonesia
07:46 UTC · 147.7 km deep
4.6
134 km E of Nishinoomote, Japan
14:50 UTC · 10.0 km deep
Earthquake Map — April 20, 2023
All Earthquakes — April 20, 2023
Showing 30 of 94 (filtered from 298)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-04-20 2023-04-20 23:47:20 UTC | 3.1ml | 111 km ESE of Atka, Alaska 51.780°, -172.723° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
April 20, 2023 brought a magnitude 3.1 earthquake 111 km ESE of Atka, Alaska, logged at 23:47 UTC. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 22:49:39 UTC | 4.1mb | south of the Fiji Islands -23.346°, -179.826° | 534.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded south of the Fiji Islands on April 20, 2023 at 22:49 UTC. 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. | ||||||||
2023-04-20 2023-04-20 22:14:42 UTC | 2.6ml | 6 km W of Batikent, Turkey 39.967°, 32.654° | 8.4 km | 3 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.6 earthquake 6 km W of Batikent, Turkey came in on April 20, 2023 at 22:14 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 21:35:31 UTC | 2.2ml | 34 km ESE of Nelson Lagoon, Alaska 55.876°, -160.700° | 153.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 earthquake was recorded 34 km ESE of Nelson Lagoon, Alaska on April 20, 2023 at 21:35 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 21:30:55 UTC | 2.6ml | Unimak Island region, Alaska 54.773°, -164.014° | 141.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 seismic event took place in the Unimak Island region, Alaska on April 20, 2023 at 21:30 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 21:27:22 UTC | 4.1mb | 190 km SE of Tabiauan, Philippines 4.637°, 122.909° | 583.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 190 km SE of Tabiauan, Philippines with origin time 21:27 UTC on April 20, 2023. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 21:24:49 UTC | 2.5ml | 179 km SSE of Unalaska, Alaska 52.492°, -165.158° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 21:24 UTC on April 20, 2023, a magnitude 2.5 tremor occurred 179 km SSE of Unalaska, Alaska. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 21:14:20 UTC | 2.1md | 9 km ENE of P?hala, Hawaii 19.241°, -155.400° | 31.1 km | - | - | - | Auto | USGS → |
A magnitude 2.1 earthquake was recorded 9 km ENE of P?hala, Hawaii on April 20, 2023 at 21:14 UTC. It arrived roughly 13 hours after a larger magnitude 2.5 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. | ||||||||
2023-04-20 2023-04-20 20:26:12 UTC | 2.2ml | 16 km SE of Karluk, Alaska 57.465°, -154.263° | 39.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 16 km SE of Karluk, Alaska with origin time 20:26 UTC on April 20, 2023. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 20:21:28 UTC | 4.1mb | Near the coast of Atacama, Chile -28.983°, -71.657° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 20, 2023, worldwide seismic activity registered a magnitude 4.1 earthquake near Near the coast of Atacama, Chile at 20:21 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 20:10:47 UTC | 3.1ml | Utah 40.628°, -109.491° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 20, 2023 at 20:10 UTC, a magnitude 3.1 earthquake struck near Utah. 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. | ||||||||
2023-04-20 2023-04-20 20:03:27 UTC | 4.8mb | 158 km SSE of Mata-Utu, Wallis and Futuna -14.616°, -175.631° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.8 earthquake 158 km SSE of Mata-Utu, Wallis and Futuna with origin time 20:03 UTC on April 20, 2023. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 19:37:35 UTC | 4.5mb | South Island of New Zealand -43.500°, 172.786° | 17.2 km | 17 | - | - | ✓ Reviewed | USGS → |
On April 20, 2023 at 19:37 UTC, a magnitude 4.5 earthquake struck near South Island of New Zealand. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 19:31:09 UTC | 3.3ml | 4 km E of Waimairi Beach, New Zealand -43.480°, 172.781° | 17.4 km | 3 | - | - | ✓ Reviewed | USGS → |
At 19:31 UTC on April 20, 2023, a magnitude 3.3 tremor occurred 4 km E of Waimairi Beach, New Zealand. The event was offshore. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 19:18:07 UTC | 4.1mb | 141 km E of Nishinoomote, Japan 30.571°, 132.460° | 12.9 km | - | - | - | ✓ Reviewed | USGS → |
At 19:18 UTC on April 20, 2023, a magnitude 4.1 tremor occurred 141 km E of Nishinoomote, Japan. 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 M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 19:08:40 UTC | 4.0mb | 113 km NW of Tobelo, Indonesia 2.407°, 127.248° | 96.1 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.0 event was detected 113 km NW of Tobelo, Indonesia on April 20, 2023, with origin time 19:08 UTC. The event was offshore. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 19:04:01 UTC | 2.3ml | 2 km SE of Meno, Oklahoma 36.368°, -98.160° | 7.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 2 km SE of Meno, Oklahoma came in on April 20, 2023 at 19:04 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 18:25:57 UTC | 4.7mb | 136 km E of Nishinoomote, Japan 30.623°, 132.415° | 16.7 km | - | - | - | ✓ Reviewed | USGS → |
At 18:25 UTC on April 20, 2023, a magnitude 4.7 tremor occurred 136 km E of Nishinoomote, Japan. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 18:04:34 UTC | 3.3ml | 17 km ENE of Wright, Wyoming 43.785°, -105.275° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.3 earthquake 17 km ENE of Wright, Wyoming at 18:04 UTC on April 20, 2023. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 17:13:15 UTC | 4.4mb | 71 km SE of La Tirana, Chile -20.755°, -69.134° | 94.7 km | 3 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake 71 km SE of La Tirana, Chile at 17:13 UTC on April 20, 2023. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 16:58:39 UTC | 2.2ml | 71 km E of Savoonga, Alaska 63.669°, -169.028° | 15.6 km | - | - | - | ✓ Reviewed | USGS → |
On April 20, 2023, worldwide seismic activity registered a magnitude 2.2 earthquake 71 km E of Savoonga, Alaska at 16:58 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 16:38:59 UTC | 4.5mb | Kermadec Islands region -31.595°, -179.375° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded in the Kermadec Islands region on April 20, 2023 at 16:38 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 16:38:09 UTC | 4.5mb | Kermadec Islands region -31.785°, -178.915° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake in the Kermadec Islands region with origin time 16:38 UTC on April 20, 2023. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 16:30:19 UTC | 3.6ml | 52 km SE of Adak, Alaska 51.482°, -176.209° | 40.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.6 earthquake was recorded 52 km SE of Adak, Alaska on April 20, 2023 at 16:30 UTC. The event was offshore. See the M3.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 15:43:34 UTC | 4.4mb | 75 km N of Namuac, Philippines 19.290°, 121.176° | 31.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 75 km N of Namuac, Philippines on April 20, 2023, with origin time 15:43 UTC. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 15:31:27 UTC | 2.2ml | western Texas 31.701°, -104.148° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
At 15:31 UTC on April 20, 2023, a magnitude 2.2 tremor occurred near western Texas. Coming 11 hours after a magnitude 3.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 15:13:42 UTC | 2.7ml | 9 km WSW of Volcano, Hawaii 19.410°, -155.320° | 3.9 km | 1 | - | - | ✓ Reviewed | USGS → |
At 15:13 UTC on April 20, 2023, a magnitude 2.7 tremor occurred 9 km WSW of Volcano, Hawaii. 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. | ||||||||
2023-04-20 2023-04-20 15:00:00 UTC | 4.8mb | 50 km SW of La Gomera, Guatemala 13.738°, -91.365° | 57.3 km | - | - | - | ✓ Reviewed | USGS → |
On April 20, 2023, worldwide seismic activity registered a magnitude 4.8 earthquake 50 km SW of La Gomera, Guatemala at 15:00 UTC. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 14:50:24 UTC | 4.6mb | 134 km E of Nishinoomote, Japan 30.613°, 132.394° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake 134 km E of Nishinoomote, Japan came in on April 20, 2023 at 14:50 UTC. The event was offshore. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-04-20 2023-04-20 14:48:40 UTC | 2.1ml | 124 km S of McCarthy, Alaska 60.322°, -143.155° | 4.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 124 km S of McCarthy, Alaska with origin time 14:48 UTC on April 20, 2023. 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. | ||||||||
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 20, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.