Earthquakes on May 21, 2021
254
EARTHQUAKES on May 21, 2021
24-hour UTC period · USGS data
LARGEST: M7.3 — Southern Qinghai, China
10 km deep · 28 people felt it
Normal activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
23
M4.0–4.9
67
M3.0–3.9
9
M2.0–2.9
47
M1.0–1.9
108
Activity Summary
254
Total earthquakes
~250
Daily average
Normal
Activity level
23
M5.0+ events
Geographic Breakdown
By US State
Top Countries (International)
Significant Earthquakes (M4.5+)
7.3
Southern Qinghai, China
18:04 UTC · 10.0 km deep
Felt by 28
6.5
265 km SSE of Alo, Wallis and Futuna
22:13 UTC · 10.0 km deep
Felt by 5
6.1
25 km NW of Dali, China
13:48 UTC · 9.0 km deep
Felt by 21
5.8
Carlsberg Ridge
16:02 UTC · 10.0 km deep
5.8
33 km SSW of Sumberpucung, Indonesia
12:09 UTC · 106.0 km deep
Felt by 40
5.6
40 km SW of Jiquilillo, Nicaragua
22:19 UTC · 57.2 km deep
Felt by 15
5.5
189 km W of Oula Xiuma, China
18:13 UTC · 10.0 km deep
5.5
Southern Qinghai, China
18:12 UTC · 10.0 km deep
Earthquake Map — May 21, 2021
All Earthquakes — May 21, 2021
Showing 30 of 146 (filtered from 254)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-05-21 2021-05-21 23:56:16 UTC | 5.2mb | 73 km SE of Pondaguitan, Philippines 5.887°, 126.646° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
May 21, 2021 brought a magnitude 5.2 earthquake 73 km SE of Pondaguitan, Philippines, logged at 23:56 UTC. The event was offshore. See the M5.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 23:51:45 UTC | 4.4mb | southeast Indian Ridge -49.090°, 105.827° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake near southeast Indian Ridge at 23:51 UTC on May 21, 2021. This event falls inside the aftershock decay of a nearby magnitude 4.9 earthquake that occurred about 1 hours earlier. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 23:50:42 UTC | 4.4mb | 10 km NNW of P?veh, Iran 35.134°, 46.327° | 10.0 km | 4 | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected 10 km NNW of P?veh, Iran on May 21, 2021, with origin time 23:50 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 23:46:39 UTC | 4.3mb | southeast Indian Ridge -49.199°, 105.907° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On May 21, 2021, worldwide seismic activity registered a magnitude 4.3 earthquake near southeast Indian Ridge at 23:46 UTC. It arrived roughly 1 hours after a larger magnitude 4.9 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. | ||||||||
2021-05-21 2021-05-21 23:35:09 UTC | 4.9mb | southeast Indian Ridge -49.122°, 105.270° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On May 21, 2021, worldwide seismic activity registered a magnitude 4.9 earthquake near southeast Indian Ridge at 23:35 UTC. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 23:32:06 UTC | 4.1mb | Southern Qinghai, China 34.667°, 98.015° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.1 earthquake was recorded near Southern Qinghai, China on May 21, 2021 at 23:32 UTC. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 23:20:13 UTC | 4.9mb | southeast Indian Ridge -49.171°, 105.639° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
At 23:20 UTC on May 21, 2021, a magnitude 4.9 tremor occurred near southeast Indian Ridge. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 23:07:42 UTC | 4.9mb | southeast Indian Ridge -49.226°, 105.777° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.9 earthquake near southeast Indian Ridge at 23:07 UTC on May 21, 2021. See the M4.9 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 23:06:55 UTC | 4.5mb | southeast Indian Ridge -49.080°, 105.685° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On May 21, 2021, worldwide seismic activity registered a magnitude 4.5 earthquake near southeast Indian Ridge at 23:06 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 22:33:14 UTC | 4.5mb | Fiji region -16.631°, -177.343° | 10.0 km | 1 | - | - | ✓ Reviewed | USGS → |
At 22:33 UTC on May 21, 2021, a magnitude 4.5 tremor occurred in the Fiji region. Coming 1 hours after a magnitude 6.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 22:23:31 UTC | 4.1mb | 25 km S of Mandráki, Greece 36.386°, 27.163° | 33.8 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 4.1 earthquake 25 km S of Mandráki, Greece with origin time 22:23 UTC on May 21, 2021. The event was offshore. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 22:19:51 UTC | 5.6mww | 40 km SW of Jiquilillo, Nicaragua 12.451°, -87.671° | 57.2 km | 15 | IV | green | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 5.6 earthquake 40 km SW of Jiquilillo, Nicaragua at 22:19 UTC on May 21, 2021. The USGS PAGER system assigned a green alert level for this event, signalling no significant casualties or damage expected. The event was offshore. See the M5.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 22:13:18 UTC | 6.5mww | 265 km SSE of Alo, Wallis and Futuna -16.601°, -177.373° | 10.0 km | 5 | VI | green | ✓ Reviewed | USGS → |
A magnitude 6.5 earthquake was recorded 265 km SSE of Alo, Wallis and Futuna on May 21, 2021 at 22:13 UTC. A tsunami evaluation was automatically initiated given the magnitude and location. 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. | ||||||||
2021-05-21 2021-05-21 21:59:36 UTC | 4.6mb | Southern Qinghai, China 34.590°, 98.369° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.6 event was detected near Southern Qinghai, China on May 21, 2021, with origin time 21:59 UTC. It arrived roughly 4 hours after a larger magnitude 7.3 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. | ||||||||
2021-05-21 2021-05-21 21:14:02 UTC | 4.0mb | Southern Qinghai, China 34.753°, 97.868° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 4.0 seismic event took place near Southern Qinghai, China on May 21, 2021 at 21:14 UTC. This event falls inside the aftershock decay of a nearby magnitude 4.6 earthquake that occurred about 1 hours earlier. See the M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 21:09:12 UTC | 4.0mb | Southern Qinghai, China 34.430°, 99.228° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
May 21, 2021 brought a magnitude 4.0 earthquake near Southern Qinghai, China, logged at 21:09 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 M4.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:52:54 UTC | 2.8ml | western Texas 32.120°, -102.155° | 7.1 km | 9 | - | - | ✓ Reviewed | USGS → |
On May 21, 2021, worldwide seismic activity registered a magnitude 2.8 earthquake near western Texas at 20:52 UTC. See the M2.8 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:40:51 UTC | 2.0ml | 4 km S of P?hala, Hawaii 19.166°, -155.471° | 32.1 km | - | - | - | Auto | USGS → |
Seismographs logged a magnitude 2.0 earthquake 4 km S of P?hala, Hawaii with origin time 20:40 UTC on May 21, 2021. This event falls inside the aftershock decay of a nearby magnitude 3.2 earthquake that occurred about 19 hours earlier. The event was offshore. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:37:12 UTC | 3.1ml | 4 km ENE of Girdwood, Alaska 60.962°, -149.099° | 13.3 km | 22 | III | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 3.1 earthquake 4 km ENE of Girdwood, Alaska at 20:37 UTC on May 21, 2021. See the M3.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:22:37 UTC | 2.4md | 3 km ESE of P?hala, Hawaii 19.192°, -155.452° | 35.5 km | - | - | - | Auto | USGS → |
May 21, 2021 brought a magnitude 2.4 earthquake 3 km ESE of P?hala, Hawaii, logged at 20:22 UTC. Coming 19 hours after a magnitude 3.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:20:55 UTC | 4.4mb | Izu Islands, Japan region 31.817°, 142.141° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.4 earthquake in the Izu Islands, Japan region came in on May 21, 2021 at 20:20 UTC. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:10:59 UTC | 4.1mb | 27 km WNW of Dali, China 25.715°, 99.977° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
On May 21, 2021, worldwide seismic activity registered a magnitude 4.1 earthquake 27 km WNW of Dali, China at 20:10 UTC. Coming 6 hours after a magnitude 6.1 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:07:58 UTC | 2.4ml | 11 km NNE of Houston, Alaska 61.717°, -149.712° | 27.6 km | - | - | - | Auto | USGS → |
The USGS recorded this magnitude 2.4 earthquake 11 km NNE of Houston, Alaska at 20:07 UTC on May 21, 2021. See the M2.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:04:30 UTC | 4.5mb | Southern Qinghai, China 34.518°, 98.589° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.5 earthquake near Southern Qinghai, China at 20:04 UTC on May 21, 2021. It arrived roughly 2 hours after a larger magnitude 5.5 mainshock in the same 20 km area, placing it within the typical aftershock window. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 20:03:56 UTC | 3.5ml | 20 km E of Wright, Wyoming 43.764°, -105.234° | 0.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 3.5 earthquake was recorded 20 km E of Wright, Wyoming on May 21, 2021 at 20:03 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M3.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 19:54:05 UTC | 2.0md | 3km WSW of San Juan Bautista, CA 36.831°, -121.570° | 5.2 km | - | - | - | ✓ Reviewed | USGS → |
On May 21, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 3km WSW of San Juan Bautista, CA at 19:54 UTC. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 19:49:14 UTC | 4.6mb | Southern Qinghai, China 34.666°, 97.717° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.6 earthquake near Southern Qinghai, China came in on May 21, 2021 at 19:49 UTC. See the M4.6 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 19:34:29 UTC | 4.5mb | Kermadec Islands, New Zealand -30.265°, -177.463° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.5 event was detected near Kermadec Islands, New Zealand on May 21, 2021, with origin time 19:34 UTC. See the M4.5 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-05-21 2021-05-21 19:24:55 UTC | 2.1ml | 13 km NW of Stanley, Idaho 44.292°, -115.075° | 4.7 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 13 km NW of Stanley, Idaho came in on May 21, 2021 at 19:24 UTC. Coming 17 hours after a magnitude 2.6 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. | ||||||||
2021-05-21 2021-05-21 19:23:44 UTC | 3.0ml | 23 km SSW of Larsen Bay, Alaska 57.332°, -154.059° | 35.0 km | - | - | - | Auto | USGS → |
This magnitude 3.0 event was detected 23 km SSW of Larsen Bay, Alaska on May 21, 2021, with origin time 19:23 UTC. See the M3.0 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 May 21, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.