Earthquakes on March 4, 2021
418
EARTHQUAKES on March 4, 2021
24-hour UTC period · USGS data
29 km deep · 13 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
53
M4.0–4.9
107
M3.0–3.9
15
M2.0–2.9
63
M1.0–1.9
180
Activity Summary
418
Total earthquakes
~250
Daily average
Elevated
Activity level
53
M5.0+ events
Significant Earthquakes (M4.5+)
8.1
2021 Kermadec Islands, New Zealand Earthquake
19:28 UTC · 28.9 km deep
Felt by 13
7.4
Kermadec Islands, New Zealand
17:41 UTC · 43.0 km deep
Felt by 3
7.3
182 km NE of Gisborne, New Zealand
13:27 UTC · 10.0 km deep
Felt by 154
6.5
Kermadec Islands region
23:12 UTC · 24.0 km deep
6.1
Kermadec Islands region
20:25 UTC · 10.0 km deep
6.1
66 km SSW of Sola, Vanuatu
16:53 UTC · 173.3 km deep
Felt by 5
5.8
Kermadec Islands region
22:41 UTC · 10.0 km deep
5.8
Kermadec Islands, New Zealand
22:33 UTC · 10.0 km deep
Earthquake Map — March 4, 2021
All Earthquakes — March 4, 2021
Showing 30 of 238 (filtered from 418)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-03-04 2021-03-04 23:58:38 UTC | 2.3ml | 86 km SSE of King Cove, Alaska 54.366°, -161.704° | 9.2 km | - | - | - | ✓ Reviewed | USGS → |
On March 4, 2021, worldwide seismic activity registered a magnitude 2.3 earthquake 86 km SSE of King Cove, Alaska at 23:58 UTC. Coming 23 hours after a magnitude 4.3 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. | ||||||||
2021-03-04 2021-03-04 23:52:53 UTC | 5.1mb | Kermadec Islands region -29.344°, -176.980° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.1 earthquake in the Kermadec Islands region at 23:52 UTC on March 4, 2021. Coming 3 hours after a magnitude 5.8 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:41:55 UTC | 5.1mb | Kermadec Islands, New Zealand -29.203°, -177.268° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 5.1 event was detected near Kermadec Islands, New Zealand on March 4, 2021, with origin time 23:41 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:37:09 UTC | 5.6mb | Kermadec Islands, New Zealand -29.668°, -177.250° | 10.0 km | - | III | green | ✓ Reviewed | USGS → |
A magnitude 5.6 earthquake was recorded near Kermadec Islands, New Zealand on March 4, 2021 at 23:37 UTC. Coming 4 hours after a magnitude 8.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:36:58 UTC | 4.5mb | 39 km SW of Reuleuet, Indonesia 5.005°, 96.000° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 4, 2021 at 23:36 UTC, a magnitude 4.5 earthquake struck 39 km SW of Reuleuet, Indonesia. The event was offshore. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:34:54 UTC | 5.5mb | Kermadec Islands region -28.680°, -176.475° | 10.0 km | - | II | green | ✓ Reviewed | USGS → |
This magnitude 5.5 event was detected in the Kermadec Islands region on March 4, 2021, with origin time 23:34 UTC. This event falls inside the aftershock decay of a nearby magnitude 5.6 earthquake that occurred about 1 hours earlier. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:28:29 UTC | 4.9mb | Kermadec Islands region -28.986°, -176.962° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 4, 2021, worldwide seismic activity registered a magnitude 4.9 earthquake in the Kermadec Islands region at 23:28 UTC. Coming 3 hours after a magnitude 5.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:26:45 UTC | 4.7mb | Kermadec Islands region -28.499°, -176.865° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.7 seismic event took place in the Kermadec Islands region on March 4, 2021 at 23:26 UTC. It arrived roughly 1 hours after a larger magnitude 6.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:12:59 UTC | 6.5mwb | Kermadec Islands region -28.517°, -176.680° | 24.0 km | - | III | green | ✓ Reviewed | USGS → |
On March 4, 2021, worldwide seismic activity registered a magnitude 6.5 earthquake in the Kermadec Islands region at 23:12 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M6.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:11:17 UTC | 5.4mb | Kermadec Islands region -29.741°, -176.625° | 10.0 km | - | II | green | ✓ Reviewed | USGS → |
On March 4, 2021 at 23:11 UTC, a magnitude 5.4 earthquake struck in the Kermadec Islands region. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:07:45 UTC | 2.8md | 8 km SSE of Indios, Puerto Rico 17.923°, -66.801° | 9.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 4, 2021 at 23:07 UTC, a magnitude 2.8 earthquake struck 8 km SSE of Indios, Puerto Rico. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 23:04:37 UTC | 2.3ml | 56km WNW of Beatty, NV 37.089°, -117.348° | -0.3 km | - | - | - | ✓ Reviewed | USGS → |
At 23:04 UTC on March 4, 2021, a magnitude 2.3 tremor occurred 56km WNW of Beatty, NV. 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. | ||||||||
2021-03-04 2021-03-04 22:55:38 UTC | 5.6mb | Kermadec Islands region -28.827°, -176.525° | 10.0 km | - | II | green | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 5.6 earthquake in the Kermadec Islands region with origin time 22:55 UTC on March 4, 2021. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:52:43 UTC | 3.0md | 30km WNW of Ferndale, CA 40.697°, -124.579° | 21.8 km | 6 | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.0 earthquake 30km WNW of Ferndale, CA at 22:52 UTC on March 4, 2021. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:48:45 UTC | 3.7mb | 116 km SSE of Sand Point, Alaska 54.396°, -159.695° | 30.3 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 3.7 earthquake 116 km SSE of Sand Point, Alaska with origin time 22:48 UTC on March 4, 2021. See the M3.7 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:45:43 UTC | 5.2mb | Kermadec Islands region -28.660°, -176.547° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 5.2 earthquake in the Kermadec Islands region came in on March 4, 2021 at 22:45 UTC. It arrived roughly 1 hours after a larger magnitude 5.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:44:38 UTC | 5.4mb | Kermadec Islands region -28.490°, -176.494° | 10.0 km | - | II | green | ✓ Reviewed | USGS → |
A magnitude 5.4 earthquake was recorded in the Kermadec Islands region on March 4, 2021 at 22:44 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:43:18 UTC | 4.9mb | Kermadec Islands region -28.550°, -176.486° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 22:43 UTC on March 4, 2021, a magnitude 4.9 tremor occurred in the Kermadec Islands region. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:41:05 UTC | 5.8mb | Kermadec Islands region -28.338°, -176.634° | 10.0 km | - | III | green | ✓ Reviewed | USGS → |
This magnitude 5.8 event was detected in the Kermadec Islands region on March 4, 2021, with origin time 22:41 UTC. It arrived roughly 2 hours after a larger magnitude 6.1 mainshock in the same 20 km area, placing it within the typical aftershock window. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:40:29 UTC | 5.2mb | Kermadec Islands region -28.532°, -176.719° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 5.2 seismic event took place in the Kermadec Islands region on March 4, 2021 at 22:40 UTC. This event falls inside the aftershock decay of a nearby magnitude 6.1 earthquake that occurred about 2 hours earlier. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:33:45 UTC | 5.8mb | Kermadec Islands, New Zealand -30.050°, -177.133° | 10.0 km | - | III | green | ✓ Reviewed | USGS → |
Reports of a magnitude 5.8 earthquake near Kermadec Islands, New Zealand came in on March 4, 2021 at 22:33 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:32:56 UTC | 4.8mb | Kermadec Islands, New Zealand -29.809°, -177.392° | 10.0 km | - | II | green | ✓ Reviewed | USGS → |
A magnitude 4.8 seismic event took place near Kermadec Islands, New Zealand on March 4, 2021 at 22:32 UTC. Coming 3 hours after a magnitude 8.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:26:36 UTC | 4.6mb | Kermadec Islands region -28.776°, -176.695° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On March 4, 2021, worldwide seismic activity registered a magnitude 4.6 earthquake in the Kermadec Islands region at 22:26 UTC. It arrived roughly 1 hours after a larger magnitude 5.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:05:56 UTC | 5.5mb | Kermadec Islands region -28.607°, -176.712° | 10.0 km | - | II | green | ✓ Reviewed | USGS → |
Reports of a magnitude 5.5 earthquake in the Kermadec Islands region came in on March 4, 2021 at 22:05 UTC. In the 72 hours after this event, the USGS recorded 4 smaller earthquakes within 20 km, consistent with an ongoing aftershock sequence rooted here. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 22:00:05 UTC | 5.2mb | Kermadec Islands, New Zealand -29.188°, -177.033° | 10.0 km | - | II | green | ✓ Reviewed | USGS → |
March 4, 2021 brought a magnitude 5.2 earthquake near Kermadec Islands, New Zealand, logged at 22:00 UTC. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 21:55:41 UTC | 4.8mb | Kermadec Islands region -28.678°, -176.537° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
March 4, 2021 brought a magnitude 4.8 earthquake in the Kermadec Islands region, logged at 21:55 UTC. See the M4.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 21:46:01 UTC | 5.1mb | Kermadec Islands region -28.453°, -177.127° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 5.1 earthquake in the Kermadec Islands region came in on March 4, 2021 at 21:46 UTC. See the M5.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 21:43:54 UTC | 2.5ml | 102 km SE of Perryville, Alaska 55.206°, -158.111° | 25.7 km | - | - | - | ✓ Reviewed | USGS → |
On March 4, 2021 at 21:43 UTC, a magnitude 2.5 earthquake struck 102 km SE of Perryville, Alaska. This event falls inside the aftershock decay of a nearby magnitude 3.7 earthquake that occurred about 1 hours earlier. The event was offshore. See the M2.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 21:41:49 UTC | 4.9mb | Kermadec Islands region -27.407°, -176.725° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.9 earthquake in the Kermadec Islands region at 21:41 UTC on March 4, 2021. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-03-04 2021-03-04 21:38:04 UTC | 4.9mb | Kermadec Islands region -29.725°, -176.841° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.9 event was detected in the Kermadec Islands region on March 4, 2021, with origin time 21:38 UTC. Coming 2 hours after a magnitude 5.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.9 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 4, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.