Earthquakes on April 18, 2021
317
EARTHQUAKES on April 18, 2021
24-hour UTC period · USGS data
12 km deep · 69 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
8
M4.0–4.9
47
M3.0–3.9
9
M2.0–2.9
60
M1.0–1.9
193
Activity Summary
317
Total earthquakes
~250
Daily average
Elevated
Activity level
8
M5.0+ events
Geographic Breakdown
By US State
Significant Earthquakes (M4.5+)
5.8
15 km SSW of Hualien City, Taiwan
14:14 UTC · 12.0 km deep
Felt by 69
5.8
24 km NE of Bandar-e Gen?veh, Iran
06:41 UTC · 8.0 km deep
Felt by 74
5.6
53 km ESE of Ishinomaki, Japan
00:29 UTC · 31.4 km deep
Felt by 4
5.6
57 km E of Ishinomaki, Japan
00:29 UTC · 41.0 km deep
Felt by 39
5.5
21 km S of Hualien City, Taiwan
14:11 UTC · 10.0 km deep
Felt by 30
5.2
Kermadec Islands, New Zealand
17:03 UTC · 10.0 km deep
5.1
61 km ESE of Hakha, Myanmar
13:24 UTC · 24.7 km deep
Felt by 1
5.1
South Shetland Islands
02:15 UTC · 10.0 km deep
Earthquake Map — April 18, 2021
All Earthquakes — April 18, 2021
Showing 30 of 124 (filtered from 317)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-04-18 2021-04-18 23:46:14 UTC | 2.6md | 38km WNW of Petrolia, CA 40.444°, -124.712° | 24.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 38km WNW of Petrolia, CA on April 18, 2021 at 23:46 UTC. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 23:23:46 UTC | 2.2ml | 16 km NNW of Jamestown, Washington 48.275°, -123.136° | 42.5 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 16 km NNW of Jamestown, Washington came in on April 18, 2021 at 23:23 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 23:15:14 UTC | 2.3md | 5 km WSW of Liborio Negron Torres, Puerto Rico 18.015°, -66.987° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 5 km WSW of Liborio Negron Torres, Puerto Rico on April 18, 2021, with origin time 23:15 UTC. Coming 3 hours after a magnitude 2.5 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. | ||||||||
2021-04-18 2021-04-18 22:47:28 UTC | 4.5mb | 1 km SW of Tiltepec, Mexico 16.383°, -93.878° | 129.7 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded 1 km SW of Tiltepec, Mexico on April 18, 2021 at 22:47 UTC. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 22:43:50 UTC | 4.4mb | 21 km NNW of Bandar-e Gen?veh, Iran 29.764°, 50.460° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:43 UTC on April 18, 2021, a magnitude 4.4 tremor occurred 21 km NNW of Bandar-e Gen?veh, Iran. This event falls inside the aftershock decay of a nearby magnitude 4.7 earthquake that occurred about 1 hours earlier. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 22:41:45 UTC | 4.3mb | 21 km NNE of Bandar-e Gen?veh, Iran 29.767°, 50.567° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 21 km NNE of Bandar-e Gen?veh, Iran with origin time 22:41 UTC on April 18, 2021. It arrived roughly 16 hours after a larger magnitude 5.8 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 22:34:21 UTC | 2.2ml | 33 km ENE of Skwentna, Alaska 62.079°, -150.793° | 57.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 33 km ENE of Skwentna, Alaska on April 18, 2021 at 22:34 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 22:24:22 UTC | 4.4mb | Iceland region 61.776°, -26.792° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake in the Iceland region at 22:24 UTC on April 18, 2021. Coming 7 hours after a magnitude 4.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 22:17:46 UTC | 4.7mb | 19 km NE of Bandar-e Gen?veh, Iran 29.714°, 50.642° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 22:17 UTC on April 18, 2021, a magnitude 4.7 tremor occurred 19 km NE of Bandar-e Gen?veh, Iran. Coming 16 hours after a magnitude 5.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 22:08:10 UTC | 4.9mb | south of the Fiji Islands -25.454°, -176.753° | 61.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.9 seismic event took place south of the Fiji Islands on April 18, 2021 at 22:08 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 21:50:19 UTC | 4.4mb | 22 km N of Bandar-e Gen?veh, Iran 29.781°, 50.485° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 22 km N of Bandar-e Gen?veh, Iran on April 18, 2021, with origin time 21:50 UTC. It arrived roughly 15 hours after a larger magnitude 5.8 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 21:07:26 UTC | 2.2ml | 6 km S of Princeton, Canada 49.402°, -120.523° | -0.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 6 km S of Princeton, Canada with origin time 21:07 UTC on April 18, 2021. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 20:54:48 UTC | 3.1ml | 18 km NNW of Snyder, Texas 32.865°, -101.005° | 3.4 km | 2 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.1 earthquake 18 km NNW of Snyder, Texas came in on April 18, 2021 at 20:54 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. | ||||||||
2021-04-18 2021-04-18 20:41:02 UTC | 2.6ml | 8 km WNW of Dutch Harbor, Alaska 53.906°, -166.669° | 114.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.6 earthquake 8 km WNW of Dutch Harbor, Alaska with origin time 20:41 UTC on April 18, 2021. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 20:40:47 UTC | 2.4ml | 95 km W of Elfin Cove, Alaska 58.224°, -137.963° | 0.4 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.4 earthquake 95 km W of Elfin Cove, Alaska with origin time 20:40 UTC on April 18, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 8 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 20:31:30 UTC | 2.5ml | 5 km WNW of Kinta, Oklahoma 35.144°, -95.288° | 6.5 km | - | - | - | ✓ Reviewed | USGS → |
April 18, 2021 brought a magnitude 2.5 earthquake 5 km WNW of Kinta, Oklahoma, logged at 20:31 UTC. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 20:29:49 UTC | 4.2mb | 182 km SSE of Amahai, Indonesia -4.814°, 129.661° | 157.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake 182 km SSE of Amahai, Indonesia at 20:29 UTC on April 18, 2021. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 20:18:38 UTC | 4.8mb | Kepulauan Babar, Indonesia -7.160°, 129.389° | 131.8 km | - | - | - | ✓ Reviewed | USGS → |
On April 18, 2021, worldwide seismic activity registered a magnitude 4.8 earthquake near Kepulauan Babar, Indonesia at 20:18 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 20:03:58 UTC | 3.2ml | 6 km SSE of Sleepy Hollow, Wyoming 44.186°, -105.393° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 3.2 event was detected 6 km SSE of Sleepy Hollow, Wyoming on April 18, 2021, with origin time 20:03 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 20:02:06 UTC | 2.5md | 7 km SSW of Indios, Puerto Rico 17.929°, -66.838° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On April 18, 2021 at 20:02 UTC, a magnitude 2.5 earthquake struck 7 km SSW of Indios, Puerto Rico. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 19:58:28 UTC | 3.1ml | 153 km E of Atka, Alaska 51.962°, -171.988° | 19.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 seismic event took place 153 km E of Atka, Alaska on April 18, 2021 at 19:58 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 19:36:28 UTC | 2.4ml | 53 km NNE of Provideniya, Russia 64.873°, -172.858° | 22.9 km | - | - | - | ✓ Reviewed | USGS → |
On April 18, 2021, worldwide seismic activity registered a magnitude 2.4 earthquake 53 km NNE of Provideniya, Russia at 19:36 UTC. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 19:22:01 UTC | 2.2ml | 58 km S of Whites City, New Mexico 31.654°, -104.294° | 6.9 km | - | - | - | ✓ Reviewed | USGS → |
April 18, 2021 brought a magnitude 2.2 earthquake 58 km S of Whites City, New Mexico, logged at 19:22 UTC. It arrived roughly 19 hours after a larger magnitude 3.1 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. | ||||||||
2021-04-18 2021-04-18 19:19:34 UTC | 2.3ml | 58 km S of Whites City, New Mexico 31.654°, -104.297° | 7.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 58 km S of Whites City, New Mexico came in on April 18, 2021 at 19:19 UTC. It arrived roughly 19 hours after a larger magnitude 3.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 19:05:38 UTC | 2.5ml | 88 km SE of Perryville, Alaska 55.296°, -158.255° | 25.7 km | - | - | - | ✓ Reviewed | USGS → |
At 19:05 UTC on April 18, 2021, a magnitude 2.5 tremor occurred 88 km SE of Perryville, Alaska. 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 M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 19:04:37 UTC | 4.5mb | 60 km W of Tobelo, Indonesia 1.811°, 127.475° | 142.6 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.5 earthquake 60 km W of Tobelo, Indonesia with origin time 19:04 UTC on April 18, 2021. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 18:59:00 UTC | 4.2mb | 285 km SSE of Tabiauan, Philippines 3.584°, 122.729° | 547.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.2 event was detected 285 km SSE of Tabiauan, Philippines on April 18, 2021, with origin time 18:59 UTC. 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. | ||||||||
2021-04-18 2021-04-18 18:30:25 UTC | 2.3ml | 35 km NW of Stanley, Idaho 44.457°, -115.225° | 12.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 35 km NW of Stanley, Idaho on April 18, 2021 at 18:30 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 18:26:47 UTC | 4.6mb | 216 km SSE of Ambon, Indonesia -5.421°, 129.103° | 264.1 km | - | - | - | ✓ Reviewed | USGS → |
April 18, 2021 brought a magnitude 4.6 earthquake 216 km SSE of Ambon, Indonesia, logged at 18:26 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-04-18 2021-04-18 18:14:51 UTC | 2.7ml | 97 km NW of Arctic Village, Alaska 68.694°, -147.358° | 3.3 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake 97 km NW of Arctic Village, Alaska came in on April 18, 2021 at 18:14 UTC. 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. | ||||||||
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 18, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.