Earthquakes on March 30, 2021
334
EARTHQUAKES on March 30, 2021
24-hour UTC period · USGS data
LARGEST: M5.5 — southern East Pacific Rise
10 km deep
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
3
M4.0–4.9
27
M3.0–3.9
11
M2.0–2.9
71
M1.0–1.9
222
Activity Summary
334
Total earthquakes
~250
Daily average
Elevated
Activity level
3
M5.0+ events
Significant Earthquakes (M4.5+)
5.5
southern East Pacific Rise
21:35 UTC · 10.0 km deep
5.2
Beaufort Sea
00:06 UTC · 10.0 km deep
5.0
west of Macquarie Island
09:24 UTC · 10.0 km deep
4.9
211 km WNW of Sabang, Indonesia
16:08 UTC · 25.5 km deep
4.8
North Atlantic Ocean
13:14 UTC · 10.0 km deep
4.8
78 km ENE of Kiunga, Papua New Guinea
13:05 UTC · 10.0 km deep
4.7
76km W of Petrolia, CA
15:51 UTC · 9.7 km deep
Felt by 17
4.6
Mariana Islands region
23:58 UTC · 10.0 km deep
Earthquake Map — March 30, 2021
All Earthquakes — March 30, 2021
Showing 30 of 112 (filtered from 334)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-03-30 2021-03-30 23:58:41 UTC | 4.6mb | Mariana Islands region 21.320°, 146.116° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake in the Mariana Islands region came in on March 30, 2021 at 23:58 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 23:41:26 UTC | 2.4ml | 48 km W of Mentone, Texas 31.736°, -104.109° | 7.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.4 earthquake 48 km W of Mentone, Texas with origin time 23:41 UTC on March 30, 2021. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 23:33:52 UTC | 2.5md | 2km SE of San Ardo, CA 36.002°, -120.890° | 10.9 km | 2 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.5 earthquake 2km SE of San Ardo, CA came in on March 30, 2021 at 23:33 UTC. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 23:27:08 UTC | 2.5ml | 22 km E of Honaunau-Napoopoo, Hawaii 19.478°, -155.653° | 4.3 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.5 seismic event took place 22 km E of Honaunau-Napoopoo, Hawaii on March 30, 2021 at 23:27 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.7 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. | ||||||||
2021-03-30 2021-03-30 23:11:51 UTC | 2.6ml | 22 km E of Honaunau-Napoopoo, Hawaii 19.475°, -155.649° | 4.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.6 earthquake 22 km E of Honaunau-Napoopoo, Hawaii at 23:11 UTC on March 30, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.7 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 M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 23:06:52 UTC | 2.7ml | 24 km S of Mina, Nevada 38.172°, -118.078° | 4.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.7 earthquake 24 km S of Mina, Nevada came in on March 30, 2021 at 23:06 UTC. Coming 7 hours after a magnitude 4.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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. | ||||||||
2021-03-30 2021-03-30 22:36:10 UTC | 2.6md | 0 km S of Indios, Puerto Rico 17.991°, -66.820° | 11.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.6 event was detected 0 km S of Indios, Puerto Rico on March 30, 2021, with origin time 22:36 UTC. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 22:30:36 UTC | 2.0ml | 16km ESE of Julian, CA 33.034°, -116.440° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
On March 30, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 16km ESE of Julian, CA at 22:30 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 22:19:55 UTC | 2.4ml | 24 km S of Mina, Nevada 38.171°, -118.058° | 4.4 km | - | - | - | ✓ Reviewed | USGS → |
On March 30, 2021, worldwide seismic activity registered a magnitude 2.4 earthquake 24 km S of Mina, Nevada at 22:19 UTC. It arrived roughly 6 hours after a larger magnitude 4.4 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 M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 22:11:09 UTC | 2.7ml | 22 km E of Honaunau-Napoopoo, Hawaii 19.476°, -155.648° | 4.4 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 22 km E of Honaunau-Napoopoo, Hawaii on March 30, 2021, with origin time 22:11 UTC. In the 72 hours after this event, the USGS recorded 6 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. See the M2.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 21:53:01 UTC | 2.2md | 5 km ENE of P?hala, Hawaii 19.225°, -155.435° | 35.6 km | - | - | - | Auto | USGS → |
A magnitude 2.2 earthquake was recorded 5 km ENE of P?hala, Hawaii on March 30, 2021 at 21:53 UTC. It arrived roughly 21 hours after a larger magnitude 2.6 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 21:35:48 UTC | 5.5mww | southern East Pacific Rise -35.376°, -106.037° | 10.0 km | - | - | green | ✓ Reviewed | USGS → |
On March 30, 2021 at 21:35 UTC, a magnitude 5.5 earthquake struck near southern East Pacific Rise. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. It is the largest earthquake currently listed for worldwide seismic activity on March 30, 2021. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 21:34:54 UTC | 4.4mb | 55 km WSW of Tinogasta, Argentina -28.194°, -68.106° | 94.0 km | 1 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 55 km WSW of Tinogasta, Argentina on March 30, 2021, with origin time 21:34 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 21:03:00 UTC | 3.1ml | 181 km WSW of Adak, Alaska 51.128°, -178.954° | 35.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.1 seismic event took place 181 km WSW of Adak, Alaska on March 30, 2021 at 21:03 UTC. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 20:50:35 UTC | 2.3md | 4 km SE of P?hala, Hawaii 19.168°, -155.454° | 35.3 km | - | - | - | Auto | USGS → |
Reports of a magnitude 2.3 earthquake 4 km SE of P?hala, Hawaii came in on March 30, 2021 at 20:50 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.6 earthquake that occurred about 20 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 20:49:03 UTC | 2.0ml | 70 km N of Petersville, Alaska 63.123°, -150.660° | 113.2 km | - | - | - | ✓ Reviewed | USGS → |
At 20:49 UTC on March 30, 2021, a magnitude 2.0 tremor occurred 70 km N of Petersville, Alaska. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 20:46:15 UTC | 2.6ml | 94 km SW of Adak, Alaska 51.334°, -177.689° | 33.4 km | - | - | - | ✓ Reviewed | USGS → |
On March 30, 2021 at 20:46 UTC, a magnitude 2.6 earthquake struck 94 km SW of Adak, Alaska. The event was offshore. See the M2.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 20:44:23 UTC | 4.5mb | Banda Sea -6.420°, 130.035° | 121.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.5 earthquake was recorded near Banda Sea on March 30, 2021 at 20:44 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 20:07:55 UTC | 2.2ml | 6 km SSW of Thatcher, Utah 41.641°, -112.327° | 5.4 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.2 earthquake 6 km SSW of Thatcher, Utah came in on March 30, 2021 at 20:07 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 19:52:47 UTC | 4.1mb | south of the Fiji Islands -22.392°, 179.924° | 580.1 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.1 earthquake south of the Fiji Islands at 19:52 UTC on March 30, 2021. 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. | ||||||||
2021-03-30 2021-03-30 19:45:09 UTC | 2.0ml | 51 km W of Mentone, Texas 31.698°, -104.147° | 7.5 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.0 earthquake 51 km W of Mentone, Texas at 19:45 UTC on March 30, 2021. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 19:19:54 UTC | 2.1ml | 9 km SW of Milford, Utah 38.343°, -113.091° | 5.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.1 earthquake 9 km SW of Milford, Utah at 19:19 UTC on March 30, 2021. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 13 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 18:59:39 UTC | 2.1ml | 9 km SSE of Smiley, Texas 29.186°, -97.613° | 7.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 9 km SSE of Smiley, Texas on March 30, 2021 at 18:59 UTC. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 18:35:52 UTC | 2.8ml | 24 km S of Mina, Nevada 38.173°, -118.078° | 4.2 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.8 earthquake 24 km S of Mina, Nevada with origin time 18:35 UTC on March 30, 2021. It arrived roughly 3 hours after a larger magnitude 4.4 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 M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 18:08:18 UTC | 2.0ml | 34 km SE of Mina, Nevada 38.175°, -117.826° | 10.2 km | - | - | - | Auto | USGS → |
This magnitude 2.0 event was detected 34 km SE of Mina, Nevada on March 30, 2021, with origin time 18:08 UTC. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 18:06:53 UTC | 2.4ml | 2 km NE of Indianola, Washington 47.767°, -122.501° | 28.9 km | 6 | - | - | ✓ Reviewed | USGS → |
A magnitude 2.4 earthquake was recorded 2 km NE of Indianola, Washington on March 30, 2021 at 18:06 UTC. The event was offshore. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 17:33:56 UTC | 4.0mb | 249 km WNW of Neiafu, Tonga -17.893°, -176.209° | 600.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.0 earthquake 249 km WNW of Neiafu, Tonga came in on March 30, 2021 at 17:33 UTC. This is the deepest earthquake in the current dataset — a deep-focus event. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 17:28:11 UTC | 2.0ml | 72 km SE of Sand Point, Alaska 54.929°, -159.614° | 7.1 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.0 earthquake 72 km SE of Sand Point, Alaska came in on March 30, 2021 at 17:28 UTC. Coming 13 hours after a magnitude 2.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 17:19:43 UTC | 2.3ml | 22 km E of Honaunau-Napoopoo, Hawaii 19.470°, -155.653° | 2.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 22 km E of Honaunau-Napoopoo, Hawaii on March 30, 2021, with origin time 17:19 UTC. It arrived roughly 1 hours after a larger magnitude 2.4 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-30 2021-03-30 17:16:27 UTC | 2.1ml | 24 km S of Mina, Nevada 38.170°, -118.078° | 3.9 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.1 earthquake 24 km S of Mina, Nevada with origin time 17:16 UTC on March 30, 2021. Coming 1 hours after a magnitude 4.4 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. 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 March 30, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.