Earthquakes on August 24, 2021
500
EARTHQUAKES on August 24, 2021
24-hour UTC period · USGS data
35 km deep · 2 people felt it
Elevated activitycompared to daily average (~250/day)
Magnitude Breakdown
M5.0+
9
M4.0–4.9
48
M3.0–3.9
13
M2.0–2.9
102
M1.0–1.9
328
Activity Summary
500
Total earthquakes
~250
Daily average
Elevated
Activity level
9
M5.0+ events
Significant Earthquakes (M4.5+)
6.0
219 km SSW of Severo-Kuril’sk, Russia
05:37 UTC · 35.0 km deep
Felt by 2
5.4
113 km S of Champerico, Guatemala
16:16 UTC · 10.0 km deep
Felt by 1
5.4
69 km SSE of Inarajan Village, Guam
14:47 UTC · 10.0 km deep
Felt by 12
5.2
South Sandwich Islands region
07:19 UTC · 57.3 km deep
5.1
104 km S of Naze, Japan
19:38 UTC · 10.0 km deep
5.1
257 km SSE of R?zole, India
07:05 UTC · 10.0 km deep
Felt by 29
5.0
South Sandwich Islands region
23:26 UTC · 10.0 km deep
5.0
South Sandwich Islands region
18:48 UTC · 10.0 km deep
Earthquake Map — August 24, 2021
All Earthquakes — August 24, 2021
Showing 30 of 172 (filtered from 500)
(Filtered to M2.0+. Change the magnitude filter to see smaller events.)
| Time ↓ | Mag ↕ | Location ↕ | Depth ↕ | Felt ↕ | MMI | Alert | Status | Details |
|---|---|---|---|---|---|---|---|---|
2021-08-24 2021-08-24 23:38:40 UTC | 2.1md | 9 km ENE of P?hala, Hawaii 19.240°, -155.393° | 31.8 km | - | - | - | Auto | USGS → |
At 23:38 UTC on August 24, 2021, a magnitude 2.1 tremor occurred 9 km ENE of P?hala, Hawaii. It arrived roughly 6 hours after a larger magnitude 2.5 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. | ||||||||
2021-08-24 2021-08-24 23:30:11 UTC | 3.0ml | 137 km SE of Perryville, Alaska 55.118°, -157.484° | 17.7 km | - | - | - | ✓ Reviewed | USGS → |
August 24, 2021 brought a magnitude 3.0 earthquake 137 km SE of Perryville, Alaska, logged at 23:30 UTC. The event was offshore. See the M3.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 23:26:54 UTC | 5.0mb | South Sandwich Islands region -59.828°, -25.516° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 5.0 event was detected in the South Sandwich Islands region on August 24, 2021, with origin time 23:26 UTC. See the M5.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 23:25:13 UTC | 2.1md | 7 km SW of Volcano, Hawaii 19.394°, -155.278° | 1.3 km | - | - | - | ✓ Reviewed | USGS → |
On August 24, 2021, worldwide seismic activity registered a magnitude 2.1 earthquake 7 km SW of Volcano, Hawaii at 23:25 UTC. Coming 12 hours after a magnitude 3.4 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. | ||||||||
2021-08-24 2021-08-24 23:18:56 UTC | 2.3md | 7 km SW of Volcano, Hawaii 19.398°, -155.288° | 0.2 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.3 event was detected 7 km SW of Volcano, Hawaii on August 24, 2021, with origin time 23:18 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 12 hours earlier. 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. | ||||||||
2021-08-24 2021-08-24 23:17:05 UTC | 2.5md | 28km SSW of Smith Valley, NV 38.544°, -119.457° | 3.9 km | - | - | - | ✓ Reviewed | USGS → |
At 23:17 UTC on August 24, 2021, a magnitude 2.5 tremor occurred 28km SSW of Smith Valley, NV. 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. | ||||||||
2021-08-24 2021-08-24 23:09:12 UTC | 2.2ml | 1 km ESE of P?hala, Hawaii 19.196°, -155.464° | 37.6 km | - | - | - | Auto | USGS → |
This magnitude 2.2 event was detected 1 km ESE of P?hala, Hawaii on August 24, 2021, with origin time 23:09 UTC. It arrived roughly 6 hours after a larger magnitude 2.5 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. | ||||||||
2021-08-24 2021-08-24 23:05:11 UTC | 2.2md | 25km SSW of Smith Valley, NV 38.573°, -119.432° | -1.6 km | - | - | - | ✓ Reviewed | USGS → |
On August 24, 2021, worldwide seismic activity registered a magnitude 2.2 earthquake 25km SSW of Smith Valley, NV at 23:05 UTC. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 22:59:13 UTC | 2.1md | 7 km SW of Volcano, Hawaii 19.388°, -155.280° | 1.9 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.1 earthquake was recorded 7 km SW of Volcano, Hawaii on August 24, 2021 at 22:59 UTC. It arrived roughly 11 hours after a larger magnitude 3.4 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 M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 22:37:50 UTC | 2.2ml | 5 km ENE of P?hala, Hawaii 19.218°, -155.427° | 32.6 km | - | - | - | Auto | USGS → |
A magnitude 2.2 seismic event took place 5 km ENE of P?hala, Hawaii on August 24, 2021 at 22:37 UTC. Coming 5 hours after a magnitude 2.5 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 22:28:08 UTC | 2.2ml | 74 km ESE of Sand Point, Alaska 55.064°, -159.430° | 6.7 km | - | - | - | ✓ Reviewed | USGS → |
August 24, 2021 brought a magnitude 2.2 earthquake 74 km ESE of Sand Point, Alaska, logged at 22:28 UTC. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 22:09:58 UTC | 2.3ml | 7 km SW of Volcano, Hawaii 19.388°, -155.279° | 1.6 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.3 earthquake 7 km SW of Volcano, Hawaii came in on August 24, 2021 at 22:09 UTC. Coming 11 hours after a magnitude 3.4 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 21:57:15 UTC | 2.2ml | 178 km SSE of Old Harbor, Alaska 55.702°, -152.271° | 27.3 km | - | - | - | ✓ Reviewed | USGS → |
On August 24, 2021 at 21:57 UTC, a magnitude 2.2 earthquake struck 178 km SSE of Old Harbor, Alaska. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 21:56:11 UTC | 2.3ml | 5 km E of P?hala, Hawaii 19.204°, -155.422° | 2.7 km | - | - | - | Auto | USGS → |
On August 24, 2021 at 21:56 UTC, a magnitude 2.3 earthquake struck 5 km E of P?hala, Hawaii. Coming 5 hours after a magnitude 2.5 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 21:56:05 UTC | 2.4ml | 3 km ESE of P?hala, Hawaii 19.189°, -155.447° | 31.2 km | - | - | - | Auto | USGS → |
A magnitude 2.4 earthquake was recorded 3 km ESE of P?hala, Hawaii on August 24, 2021 at 21:56 UTC. Coming 5 hours after a magnitude 2.5 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. | ||||||||
2021-08-24 2021-08-24 21:54:29 UTC | 2.2md | 29km SE of Markleeville, CA 38.535°, -119.525° | 4.6 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 2.2 earthquake 29km SE of Markleeville, CA at 21:54 UTC on August 24, 2021. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 21:40:58 UTC | 2.3md | 4 km SW of Indios, Puerto Rico 17.967°, -66.847° | 15.0 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 earthquake was recorded 4 km SW of Indios, Puerto Rico on August 24, 2021 at 21:40 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.3 earthquake that occurred about 18 hours earlier. The event was offshore. See the M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 21:21:16 UTC | 2.1ml | 1 km S of Quinton, Oklahoma 35.107°, -95.375° | 6.2 km | - | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 2.1 earthquake 1 km S of Quinton, Oklahoma came in on August 24, 2021 at 21:21 UTC. It arrived roughly 6 hours after a larger magnitude 3.7 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. | ||||||||
2021-08-24 2021-08-24 21:13:22 UTC | 4.4mb | South Sandwich Islands region -58.573°, -24.817° | 10.0 km | - | - | - | ✓ Reviewed | USGS → |
The USGS recorded this magnitude 4.4 earthquake in the South Sandwich Islands region at 21:13 UTC on August 24, 2021. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 21:10:06 UTC | 4.2mb | 28 km SSE of Mazo Cruz, Peru -16.968°, -69.581° | 188.5 km | 1 | - | - | ✓ Reviewed | USGS → |
Reports of a magnitude 4.2 earthquake 28 km SSE of Mazo Cruz, Peru came in on August 24, 2021 at 21:10 UTC. See the M4.2 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 21:09:07 UTC | 2.3md | 3 km SSE of Princeton, Canada 49.429°, -120.492° | -0.5 km | - | - | - | ✓ Reviewed | USGS → |
On August 24, 2021 at 21:09 UTC, a magnitude 2.3 earthquake struck 3 km SSE of Princeton, Canada. 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. | ||||||||
2021-08-24 2021-08-24 20:58:50 UTC | 2.1md | 12 km E of P?hala, Hawaii 19.212°, -155.362° | 32.9 km | - | - | - | Auto | USGS → |
August 24, 2021 brought a magnitude 2.1 earthquake 12 km E of P?hala, Hawaii, logged at 20:58 UTC. This event falls inside the aftershock decay of a nearby magnitude 2.5 earthquake that occurred about 4 hours earlier. The event was offshore. See the M2.1 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 20:50:05 UTC | 2.3ml | 7 km SW of Volcano, Hawaii 19.393°, -155.278° | 1.8 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 seismic event took place 7 km SW of Volcano, Hawaii on August 24, 2021 at 20:50 UTC. It arrived roughly 9 hours after a larger magnitude 3.4 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. | ||||||||
2021-08-24 2021-08-24 20:47:55 UTC | 2.4ml | 7 km SW of Volcano, Hawaii 19.391°, -155.285° | -0.5 km | - | - | - | Auto | USGS → |
August 24, 2021 brought a magnitude 2.4 earthquake 7 km SW of Volcano, Hawaii, logged at 20:47 UTC. It arrived roughly 9 hours after a larger magnitude 3.4 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. | ||||||||
2021-08-24 2021-08-24 20:47:54 UTC | 2.7ml | 8 km SW of Volcano, Hawaii 19.384°, -155.279° | 1.5 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 2.7 event was detected 8 km SW of Volcano, Hawaii on August 24, 2021, with origin time 20:47 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 9 hours earlier. 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. | ||||||||
2021-08-24 2021-08-24 20:46:55 UTC | 4.4mb | South Sandwich Islands region -59.033°, -25.337° | 55.4 km | - | - | - | ✓ Reviewed | USGS → |
This magnitude 4.4 event was detected in the South Sandwich Islands region on August 24, 2021, with origin time 20:46 UTC. Coming 13 hours after a magnitude 5.2 earthquake in the immediate vicinity, it is most likely an aftershock of that larger rupture. See the M4.4 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 20:46:40 UTC | 2.4ml | 7 km SW of Volcano, Hawaii 19.390°, -155.276° | 1.5 km | - | - | - | ✓ Reviewed | USGS → |
Seismographs logged a magnitude 2.4 earthquake 7 km SW of Volcano, Hawaii with origin time 20:46 UTC on August 24, 2021. It arrived roughly 9 hours after a larger magnitude 3.4 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. | ||||||||
2021-08-24 2021-08-24 20:45:26 UTC | 2.0md | 7 km SW of Volcano, Hawaii 19.391°, -155.280° | 1.4 km | - | - | - | ✓ Reviewed | USGS → |
On August 24, 2021, worldwide seismic activity registered a magnitude 2.0 earthquake 7 km SW of Volcano, Hawaii at 20:45 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 9 hours earlier. This very shallow event was close enough to the surface that even modest magnitudes can produce significant local shaking. See the M2.0 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 20:32:06 UTC | 2.3ml | 7 km SW of Volcano, Hawaii 19.387°, -155.274° | 0.8 km | - | - | - | Auto | USGS → |
At 20:32 UTC on August 24, 2021, a magnitude 2.3 tremor occurred 7 km SW of Volcano, Hawaii. Coming 9 hours after a magnitude 3.4 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 M2.3 event page for the full report, ShakeMap, and citizen-reported intensity data. | ||||||||
2021-08-24 2021-08-24 20:32:04 UTC | 2.3ml | 7 km SW of Volcano, Hawaii 19.396°, -155.283° | 0.2 km | - | - | - | ✓ Reviewed | USGS → |
A magnitude 2.3 seismic event took place 7 km SW of Volcano, Hawaii on August 24, 2021 at 20:32 UTC. This event falls inside the aftershock decay of a nearby magnitude 3.4 earthquake that occurred about 9 hours earlier. 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. | ||||||||
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 August 24, 2021. Data includes all events of magnitude 1.0 or greater. Past earthquake data is considered final after review by USGS seismologists.