Earthquakes on March 16, 2021
358
EARTHQUAKES on March 16, 2021
24-hour UTC period · USGS data
13 km deep · 4 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
6
M4.0–4.9
51
M3.0–3.9
16
M2.0–2.9
68
M1.0–1.9
217
Activity Summary
358
Total earthquakes
~250
Daily average
Elevated
Activity level
6
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
6.6
171 km SSE of Ust’-Kamchatsk Staryy, Russia
18:38 UTC · 13.2 km deep
Felt by 4
5.4
171 km SSE of Ust’-Kamchatsk Staryy, Russia
19:51 UTC · 17.9 km deep
Felt by 1
5.3
Kermadec Islands region
12:48 UTC · 10.0 km deep
5.1
Banda Sea
19:08 UTC · 153.6 km deep
Felt by 1
5.0
141 km SSE of Ust’-Kamchatsk Staryy, Russia
19:22 UTC · 10.0 km deep
5.0
Kermadec Islands region
03:13 UTC · 10.0 km deep
4.9
Kermadec Islands, New Zealand
16:17 UTC · 10.0 km deep
4.9
northern Mid-Atlantic Ridge
07:37 UTC · 10.0 km deep
Earthquake Map — March 16, 2021
All Earthquakes — March 16, 2021
Showing 30 of 141 (filtered from 358)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-03-16 2021-03-16 23:41:57 UTC | 3.5ml | 264 km SE of Chiniak, Alaska 56.291°, -148.669° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
March 16, 2021 brought a magnitude 3.5 earthquake 264 km SE of Chiniak, Alaska, logged at 23:41 UTC. The event was offshore. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 23:33:35 UTC | 2.6ml | 86 km SE of Akutan, Alaska 53.683°, -164.712° | 63.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 86 km SE of Akutan, Alaska on March 16, 2021, with origin time 23:33 UTC. Coming 1 hours after a magnitude 3.1 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. | ||||||||
2021-03-16 2021-03-16 23:31:30 UTC | 2.1md | 4 km E of P?hala, Hawaii 19.198°, -155.432° | 35.7 km | - | - | - | Auto | USGS → |
On March 16, 2021 at 23:31 UTC, a magnitude 2.1 earthquake struck 4 km E of P?hala, Hawaii. It arrived roughly 8 hours after a larger magnitude 2.4 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. | ||||||||
2021-03-16 2021-03-16 23:30:54 UTC | 2.0ml | 10 km NE of Hermleigh, Texas 32.715°, -100.689° | 7.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:30 UTC on March 16, 2021, a magnitude 2.0 tremor occurred 10 km NE of Hermleigh, Texas. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 23:08:41 UTC | 2.3md | 4 km E of P?hala, Hawaii 19.204°, -155.438° | 34.1 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.3 earthquake 4 km E of P?hala, Hawaii at 23:08 UTC on March 16, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.4 earthquake that occurred about 8 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:56:02 UTC | 4.3mb | 60 km E of Tobelo, Indonesia 1.741°, 128.554° | 75.4 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.3 earthquake was recorded 60 km E of Tobelo, Indonesia on March 16, 2021 at 22:56 UTC. The event was offshore. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:52:24 UTC | 4.1mb | 122 km S of Ust’-Kamchatsk Staryy, Russia 55.142°, 162.828° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
On March 16, 2021 at 22:52 UTC, a magnitude 4.1 earthquake struck 122 km S of Ust’-Kamchatsk Staryy, Russia. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:35:13 UTC | 4.1mb | 83 km NNW of Isangel, Vanuatu -18.897°, 168.866° | 123.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded 83 km NNW of Isangel, Vanuatu on March 16, 2021 at 22:35 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:26:53 UTC | 2.8md | 33km WNW of Petrolia, CA 40.399°, -124.663° | 23.8 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.8 event was detected 33km WNW of Petrolia, CA on March 16, 2021, with origin time 22:26 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:22:47 UTC | 3.1ml | 89 km SE of Akutan, Alaska 53.653°, -164.684° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 3.1 earthquake 89 km SE of Akutan, Alaska came in on March 16, 2021 at 22:22 UTC. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:22:11 UTC | 4.5mb | Kermadec Islands region -28.770°, -176.938° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.5 earthquake in the Kermadec Islands region at 22:22 UTC on March 16, 2021. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:21:02 UTC | 2.2ml | 68 km NW of Aleneva, Alaska 58.516°, -153.681° | 69.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.2 seismic event took place 68 km NW of Aleneva, Alaska on March 16, 2021 at 22:21 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:13:20 UTC | 2.1ml | 80 km SE of Akutan, Alaska 53.732°, -164.764° | 61.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 80 km SE of Akutan, Alaska on March 16, 2021 at 22:13 UTC. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:04:41 UTC | 2.7ml | Central Alaska 64.832°, -149.015° | 19.9 km | - | - | - | ✓ Reviewed | USGS → |
March 16, 2021 brought a magnitude 2.7 earthquake near Central Alaska, logged at 22:04 UTC. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:04:40 UTC | 2.0ml | 29 km WNW of Tatitlek, Alaska 60.990°, -147.156° | 13.9 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 29 km WNW of Tatitlek, Alaska at 22:04 UTC on March 16, 2021. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:02:18 UTC | 2.5ml | 25 km NNE of Four Mile Road, Alaska 64.828°, -149.008° | 5.9 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2021 at 22:02 UTC, a magnitude 2.5 earthquake struck 25 km NNE of Four Mile Road, Alaska. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 22:01:33 UTC | 2.1ml | 11 km SSW of Ester, Alaska 64.755°, -148.137° | 0.7 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.1 earthquake 11 km SSW of Ester, Alaska with origin time 22:01 UTC on March 16, 2021. 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. | ||||||||
2021-03-16 2021-03-16 22:01:25 UTC | 2.3ml | 27 km N of Four Mile Road, Alaska 64.844°, -149.050° | 14.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.3 earthquake 27 km N of Four Mile Road, Alaska with origin time 22:01 UTC on March 16, 2021. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 21:59:26 UTC | 4.8mb | 296 km ENE of Kuril’sk, Russia 46.217°, 151.415° | 81.3 km | - | - | - | ✓ Reviewed | USGS → |
March 16, 2021 brought a magnitude 4.8 earthquake 296 km ENE of Kuril’sk, Russia, logged at 21:59 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 21:36:14 UTC | 2.3ml | 107 km SSE of Sand Point, Alaska 54.450°, -159.847° | 26.7 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2021, worldwide seismic activity registered a magnitude 2.3 earthquake 107 km SSE of Sand Point, Alaska at 21:36 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 10 hours earlier. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 21:34:19 UTC | 3.1ml | 57 km S of Whites City, New Mexico 31.658°, -104.364° | 6.1 km | 1 | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 seismic event took place 57 km S of Whites City, New Mexico on March 16, 2021 at 21:34 UTC. Coming 5 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 21:17:22 UTC | 2.3mb_lg | 3 km ENE of Eastborough, Kansas 37.703°, -97.234° | 5.0 km | 44 | - | - | ✓ Reviewed | USGS → |
At 21:17 UTC on March 16, 2021, a magnitude 2.3 tremor occurred 3 km ENE of Eastborough, Kansas. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 21:16:57 UTC | 4.8mb | Fiji region -21.759°, -179.370° | 586.4 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2021 at 21:16 UTC, a magnitude 4.8 earthquake struck in the Fiji region. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 21:16:19 UTC | 2.1ml | 16 km WNW of Stanley, Idaho 44.295°, -115.109° | 11.1 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 seismic event took place 16 km WNW of Stanley, Idaho on March 16, 2021 at 21:16 UTC. Coming 1 hours after a magnitude 2.9 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 21:10:26 UTC | 4.3mb | 272 km ESE of Nabire, Indonesia -4.450°, 137.704° | 73.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.3 earthquake 272 km ESE of Nabire, Indonesia with origin time 21:10 UTC on March 16, 2021. See the M4.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 20:53:05 UTC | 4.5mb | Southwest Indian Ridge -34.208°, 55.819° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.5 event was detected near Southwest Indian Ridge on March 16, 2021, with origin time 20:53 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 20:51:46 UTC | 3.3ml | 253 km SSE of King Cove, Alaska 52.870°, -161.242° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.3 earthquake 253 km SSE of King Cove, Alaska with origin time 20:51 UTC on March 16, 2021. See the M3.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 20:40:04 UTC | 4.4mb | 162 km SSE of Ust’-Kamchatsk Staryy, Russia 54.830°, 163.223° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.4 earthquake was recorded 162 km SSE of Ust’-Kamchatsk Staryy, Russia on March 16, 2021 at 20:40 UTC. This event falls inside the aftershock decay of a nearby magnitude 6.6 earthquake that occurred about 2 hours earlier. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 20:37:32 UTC | 2.2ml | 66 km W of Karluk, Alaska 57.609°, -155.570° | 92.6 km | - | - | - | ✓ Reviewed | USGS → |
March 16, 2021 brought a magnitude 2.2 earthquake 66 km W of Karluk, Alaska, logged at 20:37 UTC. The event was offshore. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-16 2021-03-16 20:30:58 UTC | 2.9ml | 17 km WNW of Stanley, Idaho 44.299°, -115.126° | 15.3 km | - | - | - | ✓ Reviewed | USGS → |
On March 16, 2021, worldwide seismic activity registered a magnitude 2.9 earthquake 17 km WNW of Stanley, Idaho at 20:30 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 M2.9 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 16, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.