Earthquakes on May 20, 2023
338
EARTHQUAKES on May 20, 2023
24-hour UTC period · USGS data
27 km deep · 6 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
18
M4.0–4.9
69
M3.0–3.9
14
M2.0–2.9
53
M1.0–1.9
184
Activity Summary
338
Total earthquakes
~250
Daily average
Elevated
Activity level
18
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
7.1
southeast of the Loyalty Islands
01:50 UTC · 27.3 km deep
Felt by 6
6.5
southeast of the Loyalty Islands
02:09 UTC · 10.0 km deep
Felt by 3
5.4
southeast of the Loyalty Islands
02:17 UTC · 10.0 km deep
5.3
southeast of the Loyalty Islands
11:36 UTC · 10.0 km deep
5.3
southeast of the Loyalty Islands
02:56 UTC · 10.0 km deep
5.2
southeast of the Loyalty Islands
13:29 UTC · 10.0 km deep
5.2
southeast of the Loyalty Islands
04:34 UTC · 10.0 km deep
5.2
southeast of the Loyalty Islands
02:20 UTC · 21.6 km deep
Earthquake Map — May 20, 2023
All Earthquakes — May 20, 2023
Showing 30 of 154 (filtered from 338)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2023-05-20 2023-05-20 23:47:03 UTC | 3.3md | 7 km NNE of Dorado, Puerto Rico 18.515°, -66.233° | 91.7 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.3 earthquake was recorded 7 km NNE of Dorado, Puerto Rico on May 20, 2023 at 23:47 UTC. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 23:33:25 UTC | 5.1mww | South Sandwich Islands region -57.982°, -25.615° | 60.4 km | - | - | - | ✓ Reviewed | USGS → |
On May 20, 2023 at 23:33 UTC, a magnitude 5.1 earthquake struck in the South Sandwich Islands region. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 23:19:54 UTC | 2.1ml | 61 km SW of Skwentna, Alaska 61.622°, -152.269° | 127.2 km | - | - | - | ✓ Reviewed | USGS → |
On May 20, 2023 at 23:19 UTC, a magnitude 2.1 earthquake struck 61 km SW of Skwentna, Alaska. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 23:08:30 UTC | 2.5ml | 8 km W of Volcano, Hawaii 19.438°, -155.312° | 3.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.5 earthquake 8 km W of Volcano, Hawaii with origin time 23:08 UTC on May 20, 2023. This event falls inside the aftershock decay of a nearby magnitude 3.7 earthquake that occurred about 1 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 23:08:20 UTC | 2.1ml | 5 km SW of Volcano, Hawaii 19.410°, -155.275° | 0.6 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 5 km SW of Volcano, Hawaii on May 20, 2023 at 23:08 UTC. It arrived roughly 1 hours after a larger magnitude 3.7 mainshock in the same 20 km area, placing it within the typical aftershock window. 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. | ||||||||
2023-05-20 2023-05-20 23:04:39 UTC | 3.7md | 2 km SW of Volcano, Hawaii 19.426°, -155.256° | 0.6 km | 24 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.7 seismic event took place 2 km SW of Volcano, Hawaii on May 20, 2023 at 23:04 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 M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 23:02:18 UTC | 3.1ml | 8 km W of Volcano, Hawaii 19.436°, -155.316° | 4.2 km | 3 | III | - | ✓ Reviewed | USGS → |
May 20, 2023 brought a magnitude 3.1 earthquake 8 km W of Volcano, Hawaii, logged at 23:02 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 M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 22:48:35 UTC | 2.1ml | 8 km W of Volcano, Hawaii 19.440°, -155.312° | 4.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 8 km W of Volcano, Hawaii came in on May 20, 2023 at 22:48 UTC. It arrived roughly 22 hours after a larger magnitude 2.2 mainshock in the same 20 km area, placing it within the typical aftershock window. 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. | ||||||||
2023-05-20 2023-05-20 22:41:14 UTC | 2.5md | 3 km ENE of Pole Ojea, Puerto Rico 17.981°, -67.152° | 4.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 3 km ENE of Pole Ojea, Puerto Rico on May 20, 2023, with origin time 22:41 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 22:08:45 UTC | 5.1mb | southeast of the Loyalty Islands -23.464°, 171.530° | 13.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.1 earthquake was recorded southeast of the Loyalty Islands on May 20, 2023 at 22:08 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 21:59:10 UTC | 2.3ml | 111 km SSE of Sand Point, Alaska 54.404°, -159.854° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.3 earthquake 111 km SSE of Sand Point, Alaska at 21:59 UTC on May 20, 2023. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 21:55:32 UTC | 2.8md | Kentucky-Tennessee border region 36.383°, -83.746° | 17.3 km | 9 | - | - | ✓ Reviewed | USGS → |
On May 20, 2023, worldwide seismic activity registered a magnitude 2.8 earthquake in the Kentucky-Tennessee border region at 21:55 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 21:10:26 UTC | 2.8ml | Alaska Peninsula 55.843°, -161.059° | 146.7 km | - | - | - | ✓ Reviewed | USGS → |
At 21:10 UTC on May 20, 2023, a magnitude 2.8 tremor occurred near Alaska Peninsula. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 20:37:03 UTC | 2.5md | 3km SSE of Prattville, CA 40.185°, -121.137° | 0.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.5 earthquake 3km SSE of Prattville, CA at 20:37 UTC on May 20, 2023. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 20:23:34 UTC | 2.1ml | 32 km SSE of Old Harbor, Alaska 56.922°, -153.173° | 29.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 32 km SSE of Old Harbor, Alaska with origin time 20:23 UTC on May 20, 2023. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 19:59:26 UTC | 4.6mb | southeast of the Loyalty Islands -23.375°, 171.056° | 34.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.6 earthquake southeast of the Loyalty Islands at 19:59 UTC on May 20, 2023. Coming 4 hours after a magnitude 4.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 19:54:54 UTC | 2.8ml | 71 km ESE of Denali National Park, Alaska 63.309°, -150.390° | 124.4 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.8 earthquake 71 km ESE of Denali National Park, Alaska at 19:54 UTC on May 20, 2023. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 19:37:32 UTC | 2.9ml | 148 km SE of Akutan, Alaska 53.404°, -163.885° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.9 earthquake was recorded 148 km SE of Akutan, Alaska on May 20, 2023 at 19:37 UTC. The event was offshore. See the M2.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 19:37:04 UTC | 3.1ml | 223 km SSE of King Cove, Alaska 53.318°, -160.605° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.1 earthquake 223 km SSE of King Cove, Alaska at 19:37 UTC on May 20, 2023. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 19:24:18 UTC | 2.3ml | western Texas 31.968°, -102.311° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected near western Texas on May 20, 2023, with origin time 19:24 UTC. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 19:00:06 UTC | 4.8mb | 163 km S of Attu Station, Alaska 51.395°, 172.841° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.8 earthquake 163 km S of Attu Station, Alaska with origin time 19:00 UTC on May 20, 2023. The event was offshore. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 18:46:16 UTC | 2.1ml | 93 km S of False Pass, Alaska 54.024°, -163.146° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
On May 20, 2023, worldwide seismic activity registered a magnitude 2.1 earthquake 93 km S of False Pass, Alaska at 18:46 UTC. Coming 14 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 18:32:32 UTC | 4.1mb | 66 km ENE of Yazd, Iran 32.212°, 54.965° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded 66 km ENE of Yazd, Iran on May 20, 2023 at 18:32 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 18:30:41 UTC | 4.3mb | Fiji region -21.319°, -179.244° | 601.7 km | - | - | - | ✓ Reviewed | USGS → |
On May 20, 2023 at 18:30 UTC, a magnitude 4.3 earthquake struck in the Fiji region. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 18:22:25 UTC | 2.0ml | 118 km WSW of Covenant Life, Alaska 58.988°, -137.932° | 3.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.0 seismic event took place 118 km WSW of Covenant Life, Alaska on May 20, 2023 at 18:22 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. | ||||||||
2023-05-20 2023-05-20 18:21:28 UTC | 4.4mb | southeast of the Loyalty Islands -22.721°, 170.736° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
May 20, 2023 brought a magnitude 4.4 earthquake southeast of the Loyalty Islands, logged at 18:21 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.3 earthquake that occurred about 15 hours earlier. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 18:21:03 UTC | 3.1ml | 221 km S of False Pass, Alaska 52.882°, -162.958° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.1 event was detected 221 km S of False Pass, Alaska on May 20, 2023, with origin time 18:21 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 18:20:48 UTC | 2.8ml | 76 km ESE of Egegik, Alaska 57.931°, -156.194° | 133.7 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 76 km ESE of Egegik, Alaska on May 20, 2023, with origin time 18:20 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 18:13:54 UTC | 2.2ml | 90 km S of False Pass, Alaska 54.043°, -163.272° | 25.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 90 km S of False Pass, Alaska with origin time 18:13 UTC on May 20, 2023. It arrived roughly 14 hours after a larger magnitude 2.6 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2023-05-20 2023-05-20 18:07:40 UTC | 5.0mb | southeast of the Loyalty Islands -22.712°, 170.838° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.0 earthquake southeast of the Loyalty Islands at 18:07 UTC on May 20, 2023. It arrived roughly 15 hours after a larger magnitude 5.3 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M5.0 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 May 20, 2023. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.