Earthquakes on March 20, 2021
315
EARTHQUAKES on March 20, 2021
24-hour UTC period · USGS data
LARGEST: M7.0 — 30 km E of Ishinomaki, Japan
43 km deep · 409 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
11
M4.0–4.9
60
M3.0–3.9
13
M2.0–2.9
68
M1.0–1.9
163
Activity Summary
315
Total earthquakes
~250
Daily average
Elevated
Activity level
11
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
7.0
30 km E of Ishinomaki, Japan
09:09 UTC · 43.0 km deep
Felt by 409
6.0
west of Macquarie Island
05:19 UTC · 10.0 km deep
Felt by 1
5.7
6 km NNW of Marquelia, Mexico
03:06 UTC · 10.0 km deep
Felt by 85
5.7
northern Mid-Atlantic Ridge
01:49 UTC · 8.0 km deep
05.6
south of Tonga
05:09 UTC · 20.2 km deep
5.5
southeast of the Loyalty Islands
15:42 UTC · 10.0 km deep
5.4
54 km WNW of Ternate, Indonesia
15:02 UTC · 27.1 km deep
5.2
178 km N of Saipan, Northern Mariana Islands
19:41 UTC · 176.2 km deep
Felt by 2
Earthquake Map — March 20, 2021
All Earthquakes — March 20, 2021
Showing 30 of 152 (filtered from 315)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-03-20 2021-03-20 23:46:01 UTC | 4.9mb | 83 km ESE of Puerto Gaitán, Colombia 3.965°, -71.414° | 15.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.9 earthquake was recorded 83 km ESE of Puerto Gaitán, Colombia on March 20, 2021 at 23:46 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 23:26:28 UTC | 2.3ml | 34 km SE of Mina, Nevada 38.165°, -117.832° | 8.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 seismic event took place 34 km SE of Mina, Nevada on March 20, 2021 at 23:26 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.1 earthquake that occurred about 22 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 23:16:07 UTC | 2.0ml | 10 km SE of Ratliff City, Oklahoma 34.384°, -97.429° | 5.5 km | - | - | - | ✓ Reviewed | USGS → |
At 23:16 UTC on March 20, 2021, a magnitude 2.0 tremor occurred 10 km SE of Ratliff City, Oklahoma. It arrived roughly 8 hours after a larger magnitude 2.3 mainshock in the same 20 km area, placing it within the typical aftershock window. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 23:15:54 UTC | 2.1md | 2 km SE of P?hala, Hawaii 19.182°, -155.462° | 33.9 km | - | - | - | Auto | USGS → |
March 20, 2021 brought a magnitude 2.1 earthquake 2 km SE of P?hala, Hawaii, logged at 23:15 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 3 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 23:01:11 UTC | 2.1ml | 10 km SE of Ratliff City, Oklahoma 34.383°, -97.422° | 5.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 10 km SE of Ratliff City, Oklahoma came in on March 20, 2021 at 23:01 UTC. Coming 7 hours after a magnitude 2.3 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. | ||||||||
2021-03-20 2021-03-20 22:50:39 UTC | 4.7mb | 41 km SE of Karpathos, Greece 35.217°, 27.506° | 26.4 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.7 earthquake 41 km SE of Karpathos, Greece came in on March 20, 2021 at 22:50 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 22:49:23 UTC | 3.0ml | 2km ESE of Ontario, CA 34.041°, -117.605° | 4.5 km | 524 | III | - | ✓ Reviewed | USGS → |
On March 20, 2021 at 22:49 UTC, a magnitude 3.0 earthquake struck 2km ESE of Ontario, CA. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 22:39:12 UTC | 2.0ml | 5 km WSW of Altamont, New York 42.683°, -74.099° | 14.9 km | 17 | - | - | ✓ Reviewed | USGS → |
March 20, 2021 brought a magnitude 2.0 earthquake 5 km WSW of Altamont, New York, logged at 22:39 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 22:33:01 UTC | 2.1md | 4 km ESE of La Parguera, Puerto Rico 17.966°, -67.003° | 6.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 4 km ESE of La Parguera, Puerto Rico on March 20, 2021 at 22:33 UTC. It arrived roughly 6 hours after a larger magnitude 3.0 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. | ||||||||
2021-03-20 2021-03-20 22:27:44 UTC | 2.3ml | 6 km W of Mutual, Oklahoma 36.224°, -99.238° | 12.9 km | - | - | - | ✓ Reviewed | USGS → |
On March 20, 2021, worldwide seismic activity registered a magnitude 2.3 earthquake 6 km W of Mutual, Oklahoma at 22:27 UTC. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 22:24:19 UTC | 4.3mb | 159 km NE of Tual, Indonesia -4.788°, 133.918° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.3 earthquake 159 km NE of Tual, Indonesia at 22:24 UTC on March 20, 2021. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 21:57:42 UTC | 2.4md | 34km E of Hydesville, CA 40.512°, -123.703° | 28.3 km | - | - | - | ✓ Reviewed | USGS → |
At 21:57 UTC on March 20, 2021, a magnitude 2.4 tremor occurred 34km E of Hydesville, CA. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 21:56:36 UTC | 4.7mb | 80 km E of Namie, Japan 37.605°, 141.895° | 54.5 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 seismic event took place 80 km E of Namie, Japan on March 20, 2021 at 21:56 UTC. The event was offshore. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 21:53:30 UTC | 2.2md | 34km E of Hydesville, CA 40.510°, -123.705° | 27.1 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.2 earthquake 34km E of Hydesville, CA with origin time 21:53 UTC on March 20, 2021. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 21:22:16 UTC | 2.2ml | 90 km SE of Sand Point, Alaska 54.836°, -159.377° | 8.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.2 event was detected 90 km SE of Sand Point, Alaska on March 20, 2021, with origin time 21:22 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 21:19:44 UTC | 3.1ml | 81 km SSW of Kaktovik, Alaska 69.419°, -144.130° | 1.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.1 earthquake 81 km SSW of Kaktovik, Alaska came in on March 20, 2021 at 21:19 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. | ||||||||
2021-03-20 2021-03-20 20:51:19 UTC | 3.2ml | 83 km SW of Attu Station, Alaska 52.248°, 172.451° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.2 earthquake 83 km SW of Attu Station, Alaska at 20:51 UTC on March 20, 2021. The event was offshore. See the M3.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 20:51:13 UTC | 3.0ml | 24 km WNW of Ambler, Alaska 67.138°, -158.403° | 17.7 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.0 earthquake 24 km WNW of Ambler, Alaska with origin time 20:51 UTC on March 20, 2021. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 20:51:09 UTC | 2.4ml | 38 km SE of Mina, Nevada 38.185°, -117.747° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.4 earthquake 38 km SE of Mina, Nevada at 20:51 UTC on March 20, 2021. It arrived roughly 20 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 M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 20:51:07 UTC | 2.2ml | 8 km SE of Ratliff City, Oklahoma 34.403°, -97.436° | 6.2 km | - | - | - | ✓ Reviewed | USGS → |
On March 20, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 8 km SE of Ratliff City, Oklahoma at 20:51 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.3 earthquake that occurred about 5 hours earlier. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 20:51:07 UTC | 2.5ml | 55 km S of Whites City, New Mexico 31.684°, -104.285° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.5 event was detected 55 km S of Whites City, New Mexico on March 20, 2021, with origin time 20:51 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 20:22:21 UTC | 4.1mb | 120 km SSE of Ust’-Kamchatsk Staryy, Russia 55.221°, 163.197° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 20:22 UTC on March 20, 2021, a magnitude 4.1 tremor occurred 120 km SSE of Ust’-Kamchatsk Staryy, Russia. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 20:17:57 UTC | 2.6md | 3 km SE of P?hala, Hawaii 19.184°, -155.450° | 31.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.6 earthquake was recorded 3 km SE of P?hala, Hawaii on March 20, 2021 at 20:17 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 20:05:28 UTC | 2.6ml | 3 km SSE of Union City, Oklahoma 35.361°, -97.930° | 7.3 km | 2 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 3 km SSE of Union City, Oklahoma at 20:05 UTC on March 20, 2021. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 19:42:14 UTC | 2.8md | 10 km SSE of Maria Antonia, Puerto Rico 17.893°, -66.849° | 14.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 10 km SSE of Maria Antonia, Puerto Rico on March 20, 2021, with origin time 19:42 UTC. Coming 3 hours after a magnitude 3.0 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 19:41:01 UTC | 5.2mb | 178 km N of Saipan, Northern Mariana Islands 16.826°, 145.687° | 176.2 km | 2 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 5.2 earthquake 178 km N of Saipan, Northern Mariana Islands came in on March 20, 2021 at 19:41 UTC. The event was offshore. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 19:39:05 UTC | 4.6mb | Kermadec Islands, New Zealand -30.109°, -177.034° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.6 earthquake was recorded near Kermadec Islands, New Zealand on March 20, 2021 at 19:39 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 19:33:39 UTC | 4.2mb | 136 km E of Yamada, Japan 39.593°, 143.528° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.2 earthquake 136 km E of Yamada, Japan at 19:33 UTC on March 20, 2021. The event was offshore. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 19:30:51 UTC | 2.0md | 4 km ESE of P?hala, Hawaii 19.191°, -155.434° | 35.0 km | - | - | - | Auto | USGS → |
A magnitude 2.0 seismic event took place 4 km ESE of P?hala, Hawaii on March 20, 2021 at 19:30 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 7 hours earlier. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-20 2021-03-20 19:12:10 UTC | 5.0mb | southeast Indian Ridge -50.337°, 112.699° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 20, 2021 at 19:12 UTC, a magnitude 5.0 earthquake struck near southeast Indian Ridge. 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 March 20, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.